2019
Journal article
Open Access
Dissecting global air traffic data to discern different types and trends of transnational human mobility
Gabrielli L., Deutschmann E., Natale F., Recchi E., Vespe M.
Human mobility across national borders is a key phenomenon of our time. At the global scale, however, we still know relatively little about the structure and nature of such transnational movements. This study uses a large dataset on monthly air passenger traffic between 239 countries worldwide from 2010 to 2018 to gain new insights into (a) mobility trends over time and (b) types of mobility. A time series decomposition is used to extract a trend and a seasonal component. The trend component permits--at a higher level of granularity than previous sources--to examine the development of mobility between countries and to test how it is affected by policy and infrastructural changes, economic developments, and violent conflict. The seasonal component allows, by measuring the lag between initial and return motion, to discern different types of mobility, from tourism to seasonal work migration. Moreover, the exact shape of seasonal mobility patterns is extracted, allowing to identify regular mobility peaks and nadirs throughout the year. The result is a unique classification of trends and types of mobility for a global set of country pairs. A range of implications and possible applications are discussed.Source: EPJ 8 (2019): 1–24. doi:10.1140/epjds/s13688-019-0204-x
DOI: 10.1140/epjds/s13688-019-0204-x
Metrics:
Gabrielli L., Deutschmann E., Natale F., Recchi E., Vespe M.
Human mobility across national borders is a key phenomenon of our time. At the global scale, however, we still know relatively little about the structure and nature of such transnational movements. This study uses a large dataset on monthly air passenger traffic between 239 countries worldwide from 2010 to 2018 to gain new insights into (a) mobility trends over time and (b) types of mobility. A time series decomposition is used to extract a trend and a seasonal component. The trend component permits--at a higher level of granularity than previous sources--to examine the development of mobility between countries and to test how it is affected by policy and infrastructural changes, economic developments, and violent conflict. The seasonal component allows, by measuring the lag between initial and return motion, to discern different types of mobility, from tourism to seasonal work migration. Moreover, the exact shape of seasonal mobility patterns is extracted, allowing to identify regular mobility peaks and nadirs throughout the year. The result is a unique classification of trends and types of mobility for a global set of country pairs. A range of implications and possible applications are discussed.Source: EPJ 8 (2019): 1–24. doi:10.1140/epjds/s13688-019-0204-x
DOI: 10.1140/epjds/s13688-019-0204-x
Metrics:
See at:
EPJ Data Science 
| epjdatascience.springeropen.com | EPJ Data Science | ISTI Repository | CNR ExploRA
2022
Journal article
Open Access
Did exposure to asylum seeking migration affect the electoral outcome of the 'Alternative für Deutschland' in Berlin? Evidence from the 2019 european elections
Pettrachin A., Gabrielli L., Kim J., Ludwig-Dehm S., Potzschke S.
This article analyses the impact of exposure to asylum-seeking migration during the European 'refugee crisis' on votes for the far-right Alternative für Deutschland at the 2019 European elections in Berlin. While other scholars investigated the relationship between locals' exposure to asylum-seekers and far-right voting, we analyse this relationship at a very small scale (electoral district level), adopting an innovative methodological approach, based on geo-localization techniques and high-resolution spatial statistics. Furthermore, we assess the impact on this relationship of some previously neglected variables. Through spatial regression models, we show that exposure to asylum-seeking migration is negatively correlated with AfD vote shares, which provides support for so-called 'contact theory' and that the relationship is stronger in better-off districts. Remarkably, the relationship is weaker in districts containing bigger reception centres, which suggests that the effects of asylum-seeking migration depend on the perceived contact intensity (and, therefore, a moderating effect of reception centre size). Finally, the effects of districts' socio-economic deprivation on the relationship between exposure to asylum-seeking migration and AfD vote shares is different in districts located in former East and West Berlin, which suggests an effect of socio-cultural history on the relationship between exposure to migration and far-right voting.Source: Journal of ethnic and migration studies (2022). doi:10.1080/1369183X.2022.2100543
DOI: 10.1080/1369183x.2022.2100543
Metrics:
Pettrachin A., Gabrielli L., Kim J., Ludwig-Dehm S., Potzschke S.
This article analyses the impact of exposure to asylum-seeking migration during the European 'refugee crisis' on votes for the far-right Alternative für Deutschland at the 2019 European elections in Berlin. While other scholars investigated the relationship between locals' exposure to asylum-seekers and far-right voting, we analyse this relationship at a very small scale (electoral district level), adopting an innovative methodological approach, based on geo-localization techniques and high-resolution spatial statistics. Furthermore, we assess the impact on this relationship of some previously neglected variables. Through spatial regression models, we show that exposure to asylum-seeking migration is negatively correlated with AfD vote shares, which provides support for so-called 'contact theory' and that the relationship is stronger in better-off districts. Remarkably, the relationship is weaker in districts containing bigger reception centres, which suggests that the effects of asylum-seeking migration depend on the perceived contact intensity (and, therefore, a moderating effect of reception centre size). Finally, the effects of districts' socio-economic deprivation on the relationship between exposure to asylum-seeking migration and AfD vote shares is different in districts located in former East and West Berlin, which suggests an effect of socio-cultural history on the relationship between exposure to migration and far-right voting.Source: Journal of ethnic and migration studies (2022). doi:10.1080/1369183X.2022.2100543
DOI: 10.1080/1369183x.2022.2100543
Metrics:
See at:
ISTI Repository | www.tandfonline.com | CNR ExploRA
2023
Journal article
Open Access
Roads, rails, and checkpoints: assessing the permeability of nation-state borders worldwide
Deutschmann E., Gabrielli L., Recchi E.
The permeability of nation-state borders determines the flow of people and commodities between countries and therefore greatly influences many aspects of human development from trade and economic inequality to migration and the ethnic composition of societies worldwide. While past research on the topic has focused on border fortification (walls, fences, etc.) or the legal dimension of border controls, we take a different approach by arguing that transport infrastructure (paths, roads, railroads, ferries) together with political checkpoints can be used as valuable indicators for the permeability of borders worldwide. More and better transport infrastructure increases permeability, whereas checkpoints create the political capacity for reducing entries. Using automatized computational methods combined with extensive manual checks, we parse data from OpenStreetMap and the World Food Programme to detect cross-border transport infrastructure and checkpoints. Based on this information, we define an index of border permeability for 312 land borders globally. Subsequent analyses show that regardless of the degree of closure enforcement at checkpoints, Europe and Africa have the most, and the Americas the least, permeable borders worldwide. Regression models reveal that border permeability is higher in densely populated areas and that economic development, by far the most relevant explanatory factor, has a curvilinear relationship with border permeability: Borders of very rich and very poor countries are highly permeable, whereas those of moderately prosperous nation-states are significantly harder to cross. Implications of this remarkably clear pattern are discussed.Source: World development 164 (2023). doi:10.1016/j.worlddev.2022.106175
DOI: 10.1016/j.worlddev.2022.106175
Metrics:
Deutschmann E., Gabrielli L., Recchi E.
The permeability of nation-state borders determines the flow of people and commodities between countries and therefore greatly influences many aspects of human development from trade and economic inequality to migration and the ethnic composition of societies worldwide. While past research on the topic has focused on border fortification (walls, fences, etc.) or the legal dimension of border controls, we take a different approach by arguing that transport infrastructure (paths, roads, railroads, ferries) together with political checkpoints can be used as valuable indicators for the permeability of borders worldwide. More and better transport infrastructure increases permeability, whereas checkpoints create the political capacity for reducing entries. Using automatized computational methods combined with extensive manual checks, we parse data from OpenStreetMap and the World Food Programme to detect cross-border transport infrastructure and checkpoints. Based on this information, we define an index of border permeability for 312 land borders globally. Subsequent analyses show that regardless of the degree of closure enforcement at checkpoints, Europe and Africa have the most, and the Americas the least, permeable borders worldwide. Regression models reveal that border permeability is higher in densely populated areas and that economic development, by far the most relevant explanatory factor, has a curvilinear relationship with border permeability: Borders of very rich and very poor countries are highly permeable, whereas those of moderately prosperous nation-states are significantly harder to cross. Implications of this remarkably clear pattern are discussed.Source: World development 164 (2023). doi:10.1016/j.worlddev.2022.106175
DOI: 10.1016/j.worlddev.2022.106175
Metrics:
See at:
World Development | ISTI Repository | www.sciencedirect.com | CNR ExploRA
2014
Contribution to book
Restricted
From tweets to semantic trajectories: mining anomalous urban mobility patterns
Gabrielli L., Rinzivillo S., Ronzano F., Villatoro D.
This paper proposes and experiments new techniques to detect urban mobility patterns and anomalies by analyzing trajectories mined from publicly available geo-positioned social media traces left by the citizens (namely Twitter). By collecting a large set of geo-located tweets characterizing a specific urban area over time, we semantically enrich the available tweets with information about its author - i.e. a res- ident or a tourist - and the purpose of the movement - i.e. the activity performed in each place. We exploit mobility data mining techniques together with social net- work analysis methods to aggregate similar trajectories thus pointing out hot spots of activities and flows of people together with their varia- tions over time. We apply and validate the proposed trajectory mining approaches to a large set of trajectories built from the geo-positioned tweets gathered in Barcelona during the Mobile World Congress 2012 (MWC2012), one of the greatest events that affected the city in 2012.Source: Citizen in Sensor Networks, edited by Jordi Nin, Daniel Villatoro, pp. 26–35. London: Springer, 2014
DOI: 10.1007/978-3-319-04178-0_3
Project(s): DATA SIM
Metrics:
Gabrielli L., Rinzivillo S., Ronzano F., Villatoro D.
This paper proposes and experiments new techniques to detect urban mobility patterns and anomalies by analyzing trajectories mined from publicly available geo-positioned social media traces left by the citizens (namely Twitter). By collecting a large set of geo-located tweets characterizing a specific urban area over time, we semantically enrich the available tweets with information about its author - i.e. a res- ident or a tourist - and the purpose of the movement - i.e. the activity performed in each place. We exploit mobility data mining techniques together with social net- work analysis methods to aggregate similar trajectories thus pointing out hot spots of activities and flows of people together with their varia- tions over time. We apply and validate the proposed trajectory mining approaches to a large set of trajectories built from the geo-positioned tweets gathered in Barcelona during the Mobile World Congress 2012 (MWC2012), one of the greatest events that affected the city in 2012.Source: Citizen in Sensor Networks, edited by Jordi Nin, Daniel Villatoro, pp. 26–35. London: Springer, 2014
DOI: 10.1007/978-3-319-04178-0_3
Project(s): DATA SIM
Metrics:
See at:
doi.org 
| link.springer.com | CNR ExploRA
2018
Conference article
Open Access
Recognizing Residents and Tourists with Retail Data Using Shopping Profiles
Guidotti R., Gabrielli L.
The huge quantity of personal data stored by service providers registering customers daily life enables the analysis of individual findgerprints characterizing the customers' behavioral profiles. We propose a framework for recognizing residents, tourists and occasional shoppers among the customers of a retail market chain. We employ our recognition framework on a real massive dataset containing the shopping transactions of more than one million of customers, and we identify representative temporal shopping profiles for residents, tourists and occasional customers. Our experiments show that even though residents are about 33% of the customers they are responsible for more than 90% of the expenditure. We statistically validate the number of residents and tourists with national official statistics enabling in this way the adoption of our recognition framework for the development of novel services and analysis.Source: 3rd EAI International Conference on Smart Objects and Technologies for Social Good, pp. 353–363, Pisa, Italy, 29-30/11/2017
DOI: 10.1007/978-3-319-76111-4_35
Project(s): SoBigData
Metrics:
Guidotti R., Gabrielli L.
The huge quantity of personal data stored by service providers registering customers daily life enables the analysis of individual findgerprints characterizing the customers' behavioral profiles. We propose a framework for recognizing residents, tourists and occasional shoppers among the customers of a retail market chain. We employ our recognition framework on a real massive dataset containing the shopping transactions of more than one million of customers, and we identify representative temporal shopping profiles for residents, tourists and occasional customers. Our experiments show that even though residents are about 33% of the customers they are responsible for more than 90% of the expenditure. We statistically validate the number of residents and tourists with national official statistics enabling in this way the adoption of our recognition framework for the development of novel services and analysis.Source: 3rd EAI International Conference on Smart Objects and Technologies for Social Good, pp. 353–363, Pisa, Italy, 29-30/11/2017
DOI: 10.1007/978-3-319-76111-4_35
Project(s): SoBigData
Metrics:
See at:
link.springer.com | ISTI Repository | Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering | CNR ExploRA
2018
Journal article
Open Access
Gravity and scaling laws of city to city migration
Prieto Curiel R., Pappalardo L., Gabrielli L., Bishop S. R.
Models of human migration provide powerful tools to forecast the flow of migrants, measure the impact of a policy, determine the cost of physical and political frictions and more. Here, we analyse the migration of individuals from and to cities in the US, finding that city to city migration follows scaling laws, so that the city size is a significant factor in determining whether, or not, an individual decides to migrate and the city size of both the origin and destination play key roles in the selection of the destination. We observe that individuals from small cities tend to migrate more frequently, tending to move to similar-sized cities, whereas individuals from large cities do not migrate so often, but when they do, they tend to move to other large cities. Building upon these findings we develop a scaling model which describes internal migration as a two-step decision process, demonstrating that it can partially explain migration fluxes based solely on city size. We then consider the impact of distance and construct a gravity-scaling model by combining the observed scaling patterns with the gravity law of migration. Results show that the scaling laws are a significant feature of human migration and that the inclusion of scaling can overcome the limits of the gravity and the radiation models of human migration.Source: PloS one 13 (2018): 1–19. doi:10.1371/journal.pone.0199892
DOI: 10.1371/journal.pone.0199892
Project(s): CIMPLEX, SoBigData
Metrics:
Prieto Curiel R., Pappalardo L., Gabrielli L., Bishop S. R.
Models of human migration provide powerful tools to forecast the flow of migrants, measure the impact of a policy, determine the cost of physical and political frictions and more. Here, we analyse the migration of individuals from and to cities in the US, finding that city to city migration follows scaling laws, so that the city size is a significant factor in determining whether, or not, an individual decides to migrate and the city size of both the origin and destination play key roles in the selection of the destination. We observe that individuals from small cities tend to migrate more frequently, tending to move to similar-sized cities, whereas individuals from large cities do not migrate so often, but when they do, they tend to move to other large cities. Building upon these findings we develop a scaling model which describes internal migration as a two-step decision process, demonstrating that it can partially explain migration fluxes based solely on city size. We then consider the impact of distance and construct a gravity-scaling model by combining the observed scaling patterns with the gravity law of migration. Results show that the scaling laws are a significant feature of human migration and that the inclusion of scaling can overcome the limits of the gravity and the radiation models of human migration.Source: PloS one 13 (2018): 1–19. doi:10.1371/journal.pone.0199892
DOI: 10.1371/journal.pone.0199892
Project(s): CIMPLEX
, SoBigData Metrics:
See at:
PLoS ONE | PLoS ONE | ISTI Repository | CNR ExploRA
2020
Conference article
Open Access
Digital footprints of international migration on twitter
Kim J., Sirbu A., Giannotti F., Gabrielli L.
Studying migration using traditional data has some limitations. To date, there have been several studies proposing innovative methodologies to measure migration stocks and flows from social big data. Nevertheless, a uniform definition of a migrant is difficult to find as it varies from one work to another depending on the purpose of the study and nature of the dataset used. In this work, a generic methodology is developed to identify migrants within the Twitter population. This describes a migrant as a person who has the current residence different from the nationality. The residence is defined as the location where a user spends most of his/her time in a certain year. The nationality is inferred from linguistic and social connections to a migrant's country of origin. This methodology is validated first with an internal gold standard dataset and second with two official statistics, and shows strong performance scores and correlation coefficients. Our method has the advantage that it can identify both immigrants and emigrants, regardless of the origin/destination countries. The new methodology can be used to study various aspects of migration, including opinions, integration, attachment, stocks and flows, motivations for migration, etc. Here, we exemplify how trending topics across and throughout different migrant communities can be observed.Source: IDA 2020 - 18th International Conference on Intelligent Data Analysis, pp. 274–286, Konstanz, Germany, 27-29 April, 2020
DOI: 10.1007/978-3-030-44584-3_22
Project(s): HumMingBird, SoBigData
Metrics:
Kim J., Sirbu A., Giannotti F., Gabrielli L.
Studying migration using traditional data has some limitations. To date, there have been several studies proposing innovative methodologies to measure migration stocks and flows from social big data. Nevertheless, a uniform definition of a migrant is difficult to find as it varies from one work to another depending on the purpose of the study and nature of the dataset used. In this work, a generic methodology is developed to identify migrants within the Twitter population. This describes a migrant as a person who has the current residence different from the nationality. The residence is defined as the location where a user spends most of his/her time in a certain year. The nationality is inferred from linguistic and social connections to a migrant's country of origin. This methodology is validated first with an internal gold standard dataset and second with two official statistics, and shows strong performance scores and correlation coefficients. Our method has the advantage that it can identify both immigrants and emigrants, regardless of the origin/destination countries. The new methodology can be used to study various aspects of migration, including opinions, integration, attachment, stocks and flows, motivations for migration, etc. Here, we exemplify how trending topics across and throughout different migrant communities can be observed.Source: IDA 2020 - 18th International Conference on Intelligent Data Analysis, pp. 274–286, Konstanz, Germany, 27-29 April, 2020
DOI: 10.1007/978-3-030-44584-3_22
Project(s): HumMingBird
, SoBigData Metrics:
See at:
Lecture Notes in Computer Science | link.springer.com | link.springer.com | ISTI Repository | CNR ExploRA
2023
Conference article
Open Access
Predicting EV parking behaviour in shared premises
Monteiro De Lira V., Pallonetto F., Gabrielli L., Renso C.
The global electric car sales continued to exceed the expectations climbing to over 3 millions and reaching a market share of over 4%. However, uncertainty of generation caused by higher penetration of renewable energies and the advent of Electrical Vehicles (EV) with their additional electricity demand could cause strains to the power system, both at distribution and transmission levels. The present work fits this context in supporting charging optimization for EV in parking premises assuming a incumbent high penetration of EVs in the system. We propose a methodology to predict an estimation of the parking duration in shared parking premises. The final objective is estimating the energy requirement of a specific parking lot, evaluate optimal EVs charging schedule and integrate the scheduling into a smart controller. We formalize the prediction problem as a supervised machine learning task to predict the duration of the parking event before the car leaves the slot. We test the proposed approach in a combination of datasets from 2 different campus facilities in Italy and Brazil. The overall results of the models shows an higher accuracy compared to a statistical analysis based on frequency, indicating a viable route for the development of accurate predictors for sharing parking premises energy management systems.Source: BMDA 2023 - 5th International Workshop on Big Mobility Data Analytics co-located with EDBT/ICDT 2023 Joint Conference, Ioannina, Greece, 28/03/2023
Project(s): ERANet SmartGridPlus
Monteiro De Lira V., Pallonetto F., Gabrielli L., Renso C.
The global electric car sales continued to exceed the expectations climbing to over 3 millions and reaching a market share of over 4%. However, uncertainty of generation caused by higher penetration of renewable energies and the advent of Electrical Vehicles (EV) with their additional electricity demand could cause strains to the power system, both at distribution and transmission levels. The present work fits this context in supporting charging optimization for EV in parking premises assuming a incumbent high penetration of EVs in the system. We propose a methodology to predict an estimation of the parking duration in shared parking premises. The final objective is estimating the energy requirement of a specific parking lot, evaluate optimal EVs charging schedule and integrate the scheduling into a smart controller. We formalize the prediction problem as a supervised machine learning task to predict the duration of the parking event before the car leaves the slot. We test the proposed approach in a combination of datasets from 2 different campus facilities in Italy and Brazil. The overall results of the models shows an higher accuracy compared to a statistical analysis based on frequency, indicating a viable route for the development of accurate predictors for sharing parking premises energy management systems.Source: BMDA 2023 - 5th International Workshop on Big Mobility Data Analytics co-located with EDBT/ICDT 2023 Joint Conference, Ioannina, Greece, 28/03/2023
Project(s): ERANet SmartGridPlus
See at:
ceur-ws.org | ISTI Repository | CNR ExploRA
2012
Conference article
Open Access
Identifying users profiles from mobile calls habits
Furletti B., Gabrielli L., Rinzivillo S., Renso C.
The huge quantity of positioning data registered by our mobile phones stimulates several research questions, mainly originating from the combination of this huge quantity of data with the extreme heterogeneity of the tracked user and the low granularity of the data. We propose a methodology to partition the users tracked by GSM phone calls into profiles like resident, commuters, in transit and tourists. The methodology analyses the phone calls with a combination of top-down and bottom up techniques where the top-down phase is based on a sequence of queries that identify some behaviors. The bottom-up is a machine learning phase to find groups of similar call behavior, thus refining the previous step. The integration of the two steps results in the partitioning of mobile traces into these four user categories that can be deeper analyzed, for example to understand the tourist movements in city or the traffic effects of commuters. An experiment on the identification of user profiles on a real dataset collecting call records from one month in the city of Pisa illustrates the methodology.Source: ACM SIGKDD International Workshop on Urban Computing, pp. 17–24, Beijing, China, 12-16 August 2012
DOI: 10.1145/2346496.2346500
Project(s): DATA SIM
Metrics:
Furletti B., Gabrielli L., Rinzivillo S., Renso C.
The huge quantity of positioning data registered by our mobile phones stimulates several research questions, mainly originating from the combination of this huge quantity of data with the extreme heterogeneity of the tracked user and the low granularity of the data. We propose a methodology to partition the users tracked by GSM phone calls into profiles like resident, commuters, in transit and tourists. The methodology analyses the phone calls with a combination of top-down and bottom up techniques where the top-down phase is based on a sequence of queries that identify some behaviors. The bottom-up is a machine learning phase to find groups of similar call behavior, thus refining the previous step. The integration of the two steps results in the partitioning of mobile traces into these four user categories that can be deeper analyzed, for example to understand the tourist movements in city or the traffic effects of commuters. An experiment on the identification of user profiles on a real dataset collecting call records from one month in the city of Pisa illustrates the methodology.Source: ACM SIGKDD International Workshop on Urban Computing, pp. 17–24, Beijing, China, 12-16 August 2012
DOI: 10.1145/2346496.2346500
Project(s): DATA SIM
Metrics:
See at:
www.cs.uic.edu | doi.org | CNR ExploRA
2013
Contribution to conference
Restricted
Pisa tourism fluxes observatory: deriving mobility indicators from GSM calls habits
Furletti B., Gabrielli L., Rinzivillo S., Renso C.
The necessity to improve the management of the resources, urged many local governments to adhere to European initiatives in the context of competitiveness and sustainability, for creating the right balance between the welfare of tourists, the needs of the natural and cultural environment and the development and competitiveness of destinations and businesses. For many Italian Municipalities, this requirements become concrete with the establishment of a tourism monitoring systems that aims at survey these phenomenon through the analysis of heterogeneous data ranging from information of the territory, energy consumption, use of the land, and linked data (arrival and departure from the airport, bus, hotels etc). We describe the permanent observatory of touristic fluxes we realized in the town of Pisa where the standard indicators have been extended with an indicator of people presence extracted from mobile GSM call data and other exploratory analyses made by using the mobile phone data.we developed a method to partition the users into residents, commuters, in transit and visitors starting from a spatio-temporal profile inferred from people call habits.Source: NetMob 2013 - Third International Conference on the Analysis of Mobile Phone Datasets, pp. 107–109, MIT Media Lab, Cambridge, MA, 1-3 Maggio 2013
Furletti B., Gabrielli L., Rinzivillo S., Renso C.
The necessity to improve the management of the resources, urged many local governments to adhere to European initiatives in the context of competitiveness and sustainability, for creating the right balance between the welfare of tourists, the needs of the natural and cultural environment and the development and competitiveness of destinations and businesses. For many Italian Municipalities, this requirements become concrete with the establishment of a tourism monitoring systems that aims at survey these phenomenon through the analysis of heterogeneous data ranging from information of the territory, energy consumption, use of the land, and linked data (arrival and departure from the airport, bus, hotels etc). We describe the permanent observatory of touristic fluxes we realized in the town of Pisa where the standard indicators have been extended with an indicator of people presence extracted from mobile GSM call data and other exploratory analyses made by using the mobile phone data.we developed a method to partition the users into residents, commuters, in transit and visitors starting from a spatio-temporal profile inferred from people call habits.Source: NetMob 2013 - Third International Conference on the Analysis of Mobile Phone Datasets, pp. 107–109, MIT Media Lab, Cambridge, MA, 1-3 Maggio 2013
See at:
perso.uclouvain.be | CNR ExploRA
2013
Conference article
Unknown
Where have you been today? Annotating trajectories with DayTag
Rinzivillo S., De Lucca Siqueira F., Gabrielli L., Renso C.
Traditionally, the information about human mobility behav- ior, called diary, is acquired from volunteers by means of paper-and- pencil surveys. These diaries, representing the mobile activities of indi- viduals, are semantically rich, but lack in spatial and temporal precision. An alternative way is collecting diaries by annotating with activities the GPS tracks of individuals. This is more accurate from a spatio-temporal point of view, but the manual annotation becomes a burdensome work for the user. The tool we propose, called DayTag, is designed as a per- sonal assistant to help an individual to reconstruct her/his diary from the GPS tracks collected by a smartphone. The user interacts through the software to visualize and annotate the trajectories, thus resulting in a simple way to get user diaries.Source: SSTD 2013 - Advances in Spatial and Temporal Databases. 13th International Symposium, pp. 467–471, Munich, Germany, 21-23 August 2013
Project(s): SEEK
Rinzivillo S., De Lucca Siqueira F., Gabrielli L., Renso C.
Traditionally, the information about human mobility behav- ior, called diary, is acquired from volunteers by means of paper-and- pencil surveys. These diaries, representing the mobile activities of indi- viduals, are semantically rich, but lack in spatial and temporal precision. An alternative way is collecting diaries by annotating with activities the GPS tracks of individuals. This is more accurate from a spatio-temporal point of view, but the manual annotation becomes a burdensome work for the user. The tool we propose, called DayTag, is designed as a per- sonal assistant to help an individual to reconstruct her/his diary from the GPS tracks collected by a smartphone. The user interacts through the software to visualize and annotate the trajectories, thus resulting in a simple way to get user diaries.Source: SSTD 2013 - Advances in Spatial and Temporal Databases. 13th International Symposium, pp. 467–471, Munich, Germany, 21-23 August 2013
Project(s): SEEK
See at: CNR ExploRA
2014
Contribution to book
Restricted
Transportation planning based on GSM traces: a case study on Ivory Coast
Nanni M., Trasarti R., Furletti B., Gabrielli L., Van Der Mede P., De Brujin J., De Romph E., Bruil G.
In this work we present an analysis process that exploits mobile phone transaction (trajectory) data to infer a transport demand model for the territory under monitoring. In particular, long-term analysis of individual call traces are performed to reconstruct systematic movements, and to infer an origin-destination matrix. We will show a case study on Ivory Coast, with emphasis on its major urbanization Abidjan. The case study includes the exploitation of the inferred mobility demand model in the construction of a transport model that projects the demand onto the transportation network (obtained from open data), and thus allows an understanding of current and future infrastructure requirements of the country.Source: Citizen in Sensor Networks, edited by Jordi Nin, Daniel Villatoro, pp. 15–25, 2014
DOI: 10.1007/978-3-319-04178-0_2
Metrics:
Nanni M., Trasarti R., Furletti B., Gabrielli L., Van Der Mede P., De Brujin J., De Romph E., Bruil G.
In this work we present an analysis process that exploits mobile phone transaction (trajectory) data to infer a transport demand model for the territory under monitoring. In particular, long-term analysis of individual call traces are performed to reconstruct systematic movements, and to infer an origin-destination matrix. We will show a case study on Ivory Coast, with emphasis on its major urbanization Abidjan. The case study includes the exploitation of the inferred mobility demand model in the construction of a transport model that projects the demand onto the transportation network (obtained from open data), and thus allows an understanding of current and future infrastructure requirements of the country.Source: Citizen in Sensor Networks, edited by Jordi Nin, Daniel Villatoro, pp. 15–25, 2014
DOI: 10.1007/978-3-319-04178-0_2
Metrics:
See at:
doi.org | link.springer.com | CNR ExploRA
2013
Conference article
Restricted
Analysis of GSM calls data for understanding user mobility behavior
Furletti B., Gabrielli L., Renso C., Rinzivillo S.
This information about our GSM calls is stored by the TelCo operator in large volumes and with strict privacy constraints making it challenging the analysis of these fingerprints for inferring mobility behavior. This paper proposes a strategy for mobility behavior identification based on aggregated calling profiles of mobile phone users. This compact representation of the user call profiles is the input of the mining algorithm for automatically classifying various kinds of mobility behavior. A further advantage of having defined the call profiles is that the analysis phase is based on summarized privacy-preserving representation of the original data. We show how these call profiles permit to design a two step process - implemented into a system - based on a bootstrap phase and a running phase for classifying users into behavior categories. We evaluated the system in two case studies where individuals are classified into residents, commuters and visitors. We conclude the paper with a discussion which emphasizes the role of the call profiles for the design of a new collaboration model between data provider and data analyst.Source: Big Data 2013 - 2013 IEEE International Conference on Big Data, pp. 550–555, Santa Clara Marriott, CA, USA, 6-9 October 2013
DOI: 10.1109/bigdata.2013.6691621
Project(s): DATA SIM
Metrics:
Furletti B., Gabrielli L., Renso C., Rinzivillo S.
This information about our GSM calls is stored by the TelCo operator in large volumes and with strict privacy constraints making it challenging the analysis of these fingerprints for inferring mobility behavior. This paper proposes a strategy for mobility behavior identification based on aggregated calling profiles of mobile phone users. This compact representation of the user call profiles is the input of the mining algorithm for automatically classifying various kinds of mobility behavior. A further advantage of having defined the call profiles is that the analysis phase is based on summarized privacy-preserving representation of the original data. We show how these call profiles permit to design a two step process - implemented into a system - based on a bootstrap phase and a running phase for classifying users into behavior categories. We evaluated the system in two case studies where individuals are classified into residents, commuters and visitors. We conclude the paper with a discussion which emphasizes the role of the call profiles for the design of a new collaboration model between data provider and data analyst.Source: Big Data 2013 - 2013 IEEE International Conference on Big Data, pp. 550–555, Santa Clara Marriott, CA, USA, 6-9 October 2013
DOI: 10.1109/bigdata.2013.6691621
Project(s): DATA SIM
Metrics:
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doi.org | ieeexplore.ieee.org | CNR ExploRA
2013
Conference article
Restricted
MP4A project: mobility planning for Africa
Nanni M., Trasarti R., Furletti B., Gabrielli L., Van Der Mede P., De Bruijn J., De Romph E., Bruil G.
This project aims to create a tool that uses mobile phone transaction (trajectory) data that will be able to address transportation related challenges, thus allowing promotion and facilitation of sustainable urban mobility planning in Third World countries. The proposed tool is a transport demand model for Ivory Coast, with emphasis on its major urbanization Abidjan. The consortium will bring together available data from the internet, and integrate these with the mobility data obtained from the mobile phones in order to build the best possible transport model. A transport model allows an understanding of current and future infrastructure requirements in Ivory Coast. As such, this project will provide the first proof of concept. In this context, long-term analysis of individual call traces will be performed to reconstruct systematic movements, and to infer an origin-destination matrix. A similar process will be performed using the locations of caller and recipient of phone calls, enabling the comparison of socio-economic ties vs. mobility. The emerging links between different areas will be used to build an effective map to optimize regional border definitions and road infrastructure from a mobility perspective. Finally, we will try to build specialized origin-destination matrices for specific categories of population. Such categories will be inferred from data through analysis of calling behaviours, and will also be used to characterize the population of different cities. The project also includes a study of data compliance with distributions of standard measures observed in literature, including distribution of calls, call durations and call network features.Source: Data for Development - Special session of the Third International Conference on the Analysis of Mobile Phone Datasets, Cambridge, USA, 2-3 May 2013
Nanni M., Trasarti R., Furletti B., Gabrielli L., Van Der Mede P., De Bruijn J., De Romph E., Bruil G.
This project aims to create a tool that uses mobile phone transaction (trajectory) data that will be able to address transportation related challenges, thus allowing promotion and facilitation of sustainable urban mobility planning in Third World countries. The proposed tool is a transport demand model for Ivory Coast, with emphasis on its major urbanization Abidjan. The consortium will bring together available data from the internet, and integrate these with the mobility data obtained from the mobile phones in order to build the best possible transport model. A transport model allows an understanding of current and future infrastructure requirements in Ivory Coast. As such, this project will provide the first proof of concept. In this context, long-term analysis of individual call traces will be performed to reconstruct systematic movements, and to infer an origin-destination matrix. A similar process will be performed using the locations of caller and recipient of phone calls, enabling the comparison of socio-economic ties vs. mobility. The emerging links between different areas will be used to build an effective map to optimize regional border definitions and road infrastructure from a mobility perspective. Finally, we will try to build specialized origin-destination matrices for specific categories of population. Such categories will be inferred from data through analysis of calling behaviours, and will also be used to characterize the population of different cities. The project also includes a study of data compliance with distributions of standard measures observed in literature, including distribution of calls, call durations and call network features.Source: Data for Development - Special session of the Third International Conference on the Analysis of Mobile Phone Datasets, Cambridge, USA, 2-3 May 2013
See at:
perso.uclouvain.be | CNR ExploRA
2015
Report
Unknown
Application of ETL techniques for SmartCity Malaga dataset
Rinzivillo S., Pennacchioli D., Gabrielli L., Giannotti F.
In this document we present a framework to aggregate data collected by sensors deployed in a portion of a distribution grid. The system provides functionalities to model the topological properties of the distribution grid, to harmonize and integrate readings coming from the sensors, to store and query efficiently the data, to visualize with a clear interface the timeseries collected. The rest of the document is organized as follows: first we show how we model the distribution grid with a graph-based representation; we describe the extraction, transformation and loading procedure; then we describe the visual interface to present the data to the analyst.Source: ISTI Technical reports, 2015
Rinzivillo S., Pennacchioli D., Gabrielli L., Giannotti F.
In this document we present a framework to aggregate data collected by sensors deployed in a portion of a distribution grid. The system provides functionalities to model the topological properties of the distribution grid, to harmonize and integrate readings coming from the sensors, to store and query efficiently the data, to visualize with a clear interface the timeseries collected. The rest of the document is organized as follows: first we show how we model the distribution grid with a graph-based representation; we describe the extraction, transformation and loading procedure; then we describe the visual interface to present the data to the analyst.Source: ISTI Technical reports, 2015
See at: CNR ExploRA
2015
Report
Unknown
Compatibility analysis of the current mobility with electrified vehicles (D4)
Rinzivillo S., Giannotti F., Pennacchioli D., Gabrielli L.
The availability of GPS-enabled devices has fostered the collection of large datasets of movements of people. This provides us a big opportunity to study human mobility behavior and to understand the key features to modify in order to improve the efficiency of individual movements. This efficiency has been studied in terms of mitigation of side effects of high density traffic, like jams, pollution, space occupancy. In this work, we concentrate on the study of the energy efficiency of movements, by considering a new emerging mean of transportation based on electric powered engines. In this document we explore the compatibility of the current mobility habits with electric engine technology, discussing improvement and solution to promote or improve the spatial range and extent of current vehicles.Source: ISTI Technical reports, 2015
Rinzivillo S., Giannotti F., Pennacchioli D., Gabrielli L.
The availability of GPS-enabled devices has fostered the collection of large datasets of movements of people. This provides us a big opportunity to study human mobility behavior and to understand the key features to modify in order to improve the efficiency of individual movements. This efficiency has been studied in terms of mitigation of side effects of high density traffic, like jams, pollution, space occupancy. In this work, we concentrate on the study of the energy efficiency of movements, by considering a new emerging mean of transportation based on electric powered engines. In this document we explore the compatibility of the current mobility habits with electric engine technology, discussing improvement and solution to promote or improve the spatial range and extent of current vehicles.Source: ISTI Technical reports, 2015
See at: CNR ExploRA
2015
Contribution to conference
Open Access
Detecting and understanding big events in big cities
Furletti B., Trasarti R., Gabrielli L., Smoreda Z., Vanhoof M., Ziemlicki C.
Recent studies have shown the great potential of big data such as mobile phone location data to model human behavior. Big data allow to analyze people presence in a territory in a fast and effective way with respect to the classical surveys (diaries or questionnaires). One of the drawbacks of these collection systems is incompleteness of the users' traces; people are localized only when they are using their phones. In this work we define a data mining method for identifying people presence and understanding the impact of big events in big cities. We exploit the ability of the Sociometer for classifying mobile phone users in mobility categories through their presence profile. The experiment in cooperation with Orange Telecom has been conduced in Paris during the event Fete de la Musique using a privacy preserving protocol.Source: Conference on the scientific analysis of mobile phone datasets, pp. 57–59, Boston, USA, 7-10 /04/2015
Furletti B., Trasarti R., Gabrielli L., Smoreda Z., Vanhoof M., Ziemlicki C.
Recent studies have shown the great potential of big data such as mobile phone location data to model human behavior. Big data allow to analyze people presence in a territory in a fast and effective way with respect to the classical surveys (diaries or questionnaires). One of the drawbacks of these collection systems is incompleteness of the users' traces; people are localized only when they are using their phones. In this work we define a data mining method for identifying people presence and understanding the impact of big events in big cities. We exploit the ability of the Sociometer for classifying mobile phone users in mobility categories through their presence profile. The experiment in cooperation with Orange Telecom has been conduced in Paris during the event Fete de la Musique using a privacy preserving protocol.Source: Conference on the scientific analysis of mobile phone datasets, pp. 57–59, Boston, USA, 7-10 /04/2015
See at:
www.netmob.org | CNR ExploRA
2016
Report
Unknown
PETRA - The framework for individual mobility pattern discovery and mobility diaries/activity model
Nanni M., Trasarti R., Gabrielli L., Romano V.
This document accompanies deliverable D3.4, which contains the software modules implementing the methods that form the core of the Mobility Pattern Mining module within the PETRA architecture, as presented in D2.2, devoted to deal with GPS and mobile phone (GSM) individual data. The rationale, motivations and some possible applications of such methods have been described in D3.3. The algorithms learn to identify the role or purpose of each trip or location within the history of a user, in terms of activity to be performed, whether it is a systematic trip or location, etc., and exploit such derived information for prediction purposes. The document briefly summarizes the interfaces and the functionalities provided.Source: Project report, PETRA, Deliverable D3.4, 2016
Project(s): PETRA
Nanni M., Trasarti R., Gabrielli L., Romano V.
This document accompanies deliverable D3.4, which contains the software modules implementing the methods that form the core of the Mobility Pattern Mining module within the PETRA architecture, as presented in D2.2, devoted to deal with GPS and mobile phone (GSM) individual data. The rationale, motivations and some possible applications of such methods have been described in D3.3. The algorithms learn to identify the role or purpose of each trip or location within the history of a user, in terms of activity to be performed, whether it is a systematic trip or location, etc., and exploit such derived information for prediction purposes. The document briefly summarizes the interfaces and the functionalities provided.Source: Project report, PETRA, Deliverable D3.4, 2016
Project(s): PETRA
See at: CNR ExploRA
2016
Conference article
Restricted
Improving population estimation from mobile calls: A clustering approach
Lulli A., Gabrielli L., Dazzi P., Dell'Amico M., Michiardi P., Nanni M., Ricci L.
Statistical authorities promote and safeguard the production and publication of official statistics that serve the public good. One of their duties is to monitor the presence of individuals region by region. Traditionally this activity has been conducted by means of censuses and surveys. Nowadays technologies open new possibilities such as a continuous sensing of the presences by leveraging the data associated to mobile devices, e.g., the behaviour of users on doing calls. In this paper first we propose a specifically conceived similarity function able to capture similarity between individuals call behaviours. Second we make use of a clustering algorithm able to handle arbitrary metric leading to a good internal and external consistency of clusters. The approach provides better population estimation with respect to state of the art comparing with real census data. The scalability and flexibility that characterises the proposed framework enables novel scenarios for the characterization of people by means of data derived from mobile users, ranging from the nearly-realtime estimation of presences to the definition of complex, uncommon user archetypes.Source: IEEE Symposium on Computers and Communication, pp. 1097–1102, Messina, Italy, 27-30 June 2016
DOI: 10.1109/iscc.2016.7543882
Metrics:
Lulli A., Gabrielli L., Dazzi P., Dell'Amico M., Michiardi P., Nanni M., Ricci L.
Statistical authorities promote and safeguard the production and publication of official statistics that serve the public good. One of their duties is to monitor the presence of individuals region by region. Traditionally this activity has been conducted by means of censuses and surveys. Nowadays technologies open new possibilities such as a continuous sensing of the presences by leveraging the data associated to mobile devices, e.g., the behaviour of users on doing calls. In this paper first we propose a specifically conceived similarity function able to capture similarity between individuals call behaviours. Second we make use of a clustering algorithm able to handle arbitrary metric leading to a good internal and external consistency of clusters. The approach provides better population estimation with respect to state of the art comparing with real census data. The scalability and flexibility that characterises the proposed framework enables novel scenarios for the characterization of people by means of data derived from mobile users, ranging from the nearly-realtime estimation of presences to the definition of complex, uncommon user archetypes.Source: IEEE Symposium on Computers and Communication, pp. 1097–1102, Messina, Italy, 27-30 June 2016
DOI: 10.1109/iscc.2016.7543882
Metrics:
See at:
doi.org | ieeexplore.ieee.org | CNR ExploRA
2016
Journal article
Open Access
An analytical framework to nowcast well-being using mobile phone data
Pappalardo L., Vanhoof M., Gabrielli L., Smoreda Z., Pedreschi D., Giannotti F.
An intriguing open question is whether measurements derived from Big Data recording human activities can yield high-fidelity proxies of socio-economic development and well-being. Can we monitor and predict the socio-economic development of a territory just by observing the behavior of its inhabitants through the lens of Big Data? In this paper, we design a data-driven analytical framework that uses mobility measures and social measures extracted from mobile phone data to estimate indicators for socio-economic development and well-being. We discover that the diversity of mobility, defined in terms of entropy of the individual users' trajectories, exhibits (i) significant correlation with two different socio-economic indicators and (ii) the highest importance in predictive models built to predict the socio-economic indicators. Our analytical framework opens an interesting perspective to study human behavior through the lens of Big Data by means of new statistical indicators that quantify and possibly "nowcast" the well-being and the socio-economic development of a territory.Source: International Journal of Data Science and Analytics (Print) 2 (2016): 75–92. doi:10.1007/s41060-016-0013-2
DOI: 10.1007/s41060-016-0013-2
DOI: 10.48550/arxiv.1606.06279
Project(s): CIMPLEX, PETRA , SoBigData
Metrics:
Pappalardo L., Vanhoof M., Gabrielli L., Smoreda Z., Pedreschi D., Giannotti F.
An intriguing open question is whether measurements derived from Big Data recording human activities can yield high-fidelity proxies of socio-economic development and well-being. Can we monitor and predict the socio-economic development of a territory just by observing the behavior of its inhabitants through the lens of Big Data? In this paper, we design a data-driven analytical framework that uses mobility measures and social measures extracted from mobile phone data to estimate indicators for socio-economic development and well-being. We discover that the diversity of mobility, defined in terms of entropy of the individual users' trajectories, exhibits (i) significant correlation with two different socio-economic indicators and (ii) the highest importance in predictive models built to predict the socio-economic indicators. Our analytical framework opens an interesting perspective to study human behavior through the lens of Big Data by means of new statistical indicators that quantify and possibly "nowcast" the well-being and the socio-economic development of a territory.Source: International Journal of Data Science and Analytics (Print) 2 (2016): 75–92. doi:10.1007/s41060-016-0013-2
DOI: 10.1007/s41060-016-0013-2
DOI: 10.48550/arxiv.1606.06279
Project(s): CIMPLEX
, PETRA , SoBigData Metrics:
See at:
arXiv.org e-Print Archive | International Journal of Data Science and Analytics | International Journal of Data Science and Analytics | ISTI Repository | doi.org | link.springer.com | CNR ExploRA