1947 documents, page 1 of 98
2016 Report Unknown

Sviluppo di una ontologia per la rappresentazione della storia clinica in ambito medico
Versienti L.
The aim of the present technical report is to describe the ontology developed to define the medical history of the patients involved in the RIS project

See at: CNR People


2012 Report Unknown

OPENAIREPLUS - OpenAIREPlus specification and release plan
Manghi P.
In this deliverable we present the plan of design and development of the OpenAIREplus System for the next 28 months. Its intended use is mainly for technical partners to locate their software release duties in the wider context of the project software release, but also for the generic reader to get an overall picture and insight view of the technical activities.Project(s): OPENAIREPLUS via OpenAIRE

See at: CNR People


2003 Other Unknown

European CHronicles On-line e Technology Implementation Plan
Savino P.
The ECHO (http://pc-erato2.iei.pi.cnr.it/echo/) Digital Library system supports the indexing and retrieval of A/V documentaries. The indexing is semi-automatic. Using a high-quality speech recogniser, the sound track of each video source is converted to a textual transcript, and then stored in a full-text information retrieval system. Likewise, video and image analysis techniques are used for extracting visual features and segmenting video sequences by automatically locating boundaries of shots, scenes, and conversations. Metadata (described according to the ECHO metadata model) are then manually associated with film documentaries in order to complete their classification. Search and retrieval on wide area networks is performed by expressing queries on the audio transcript, on metadata or by image similarity retrieval. Retrieved documentaries or their abstract, are then presented to the user.

See at: CNR People


2014 Report Unknown

PRELIDA - First version of the Roadmap
Antoniou G., Batsakis S., Isaac A., Scharnhorst A., Garcia J. M., Van Horik R., Meghini C.
The present document is a first version of the long term preservation of Linked Data roadmap deliverable. Based on current state of the art on digital preservation and Linked Data and a description of related use cases, corresponding challenges and limitations of existing approaches are identified. Then, based on these challenges, a draft roadmap is proposed for dealing with ingestion of Linked Datasets and changes into the dataset. Keeping track of changes and related technical and organizational challenges is also addressed. The present document is intended to form the basis for the scientific content of the final PRELIDA Workshop and is a stepping stone towards the preparation of a detailed final roadmap at the end of the project.Project(s): PRELIDA via OpenAIRE

See at: CNR People


2006 Article Unknown

Epistemic foundation of stable model semantics
Yann Loyer, Umberto Straccia
Stable model semantics has become a very popular approach for the management of negation in logic programming. This approach relies mainly on the closed world assumption to complete the available knowledge and its formulation has its basis in the so-called Gelfond-Lifschitz transformation. The primary goal of this work is to present an alternative and epistemic-based characterization of stable model semantics, to the Gelfond-Lifschitz transformation. In particular, we show that stable model semantics can be defined entirely as an extension of the Kripke-Kleene semantics. Indeed, we show that the closed world assumption can be seen as an additional source of 'falsehood' to be added cumulatively to the Kripke-Kleene semantics. Our approach is purely algebraic and can abstract from the particular formalism of choice as it is based on monotone operators (under the knowledge order) over bilattices only.Source: Theory and practice of logic programming 6 (2006): 355–393. doi:10.1017/S1471068405002619
DOI: 10.1017/S1471068405002619

See at: CNR People


2006 Other Unknown

Analisi dei principali adempimenti di carattere organizzativo e procedurale
Carlesi C.
Presentazione PowerPoint, svolta nell'ambito del corso di formazione 'STeP: Sicurezza Tutela e Privacy'. Obiettivo della presentazione illustrare i principali adempimenti di carattere organizzativo e procedurale riguardanti la protezione fisica e logica dei dati in relazione alle misure minime di sicurezza richieste dal D.lgs. 196/2003 'Codice in materia di protezione dei dati personali'.

See at: CNR People


2011 Conference object Unknown

Fuzzy Logic, Annotation Domains and Semantic Web Languages
Straccia U.
This talk presents a detailed, self-contained and comprehensive account of the state of the art in representing and reasoning with fuzzy knowledge in Semantic Web Languages such a RDF/RDFS, OWL 2 and RIF and discuss some implementation related issues. We further show to which extend we may generalise them to so-called annotation domains, that cover also e.g. temporal, provenance and trust extensions.Source: 5th International Conference on Scalable Uncertainty Management, SUM-11, pp. 2–21, Dayton, USA, October 10-13 2011
DOI: 10.1007/978-3-642-23963-2

See at: CNR People


2014 Doctoral thesis Unknown

Semi-automated text classification
Berardi G.
There is currently a high demand for information systems that automatically analyze textual data, since many organizations, both private and public, need to process large amounts of such data as part of their daily routine, an activity that cannot be performed by means of human work only. One of the answers to this need is text classification (TC), the task of automatically labelling textual documents from a domain D with thematic categories from a predefined set C. Modern text classification systems have reached high efficiency standards, but cannot always guarantee the labelling accuracy that applications demand. When the level of accuracy that can be obtained is insufficient, one may revert to processes in which classification is performed via a combination of automated activity and human effort. One such process is semi-automated text classification (SATC), which we define as the task of ranking a set D of automatically labelled textual documents in such a way that, if a human annotator validates (i.e., inspects and corrects where appropriate) the documents in a top-ranked portion of D with the goal of increasing the overall labelling accuracy of D, the expected such increase is maximized. An obvious strategy is to rank D so that the documents that the classifier has labelled with the lowest confidence are top-ranked. In this dissertation we show that this strategy is suboptimal. We develop new utility-theoretic ranking methods based on the notion of validation gain, defined as the improvement in classification effectiveness that would derive by validating a given automatically labelled document. We also propose new effectiveness measures for SATC-oriented ranking methods, based on the expected reduction in classification error brought about by partially validating a ranked list generated by a given ranking method. We report the results of experiments showing that, with respect to the baseline method above, and according to the proposed measures, our utility-theoretic ranking methods can achieve substantially higher expected reductions in classification error. We therefore explore the task of SATC and the potential of our methods, in multiple text classification contexts. This dissertation is, to the best of our knowledge, the first to systematically address the task of semi-automated text classification.

See at: CNR People


2005 Conference object Unknown

Fuzzy ALC with fuzzy concrete domains
Straccia U.
We present a fuzzy version of description logics with concrete domains. Interesting features are: ii{i} concept constructors are based on t-norm, t-conorm, negation and implication; ii{ii} concrete domains are fuzzy sets; ii{iii} fuzzy modifiers are allowed; and ii{iv} the reasoning algorithm is based on a mixture of completion rules and bounded mixed integer programming.Source: International Workshop on Description Logics (DL-05), pp. 96–103, Edinburgh, 26-28 July 2005

See at: CNR People


2007 Conference object Unknown

Scalable Query Dissemination in XPeer
Conforti G., Ghelli G., Manghi P., Sartiani C.
This paper presents XPeer, a data sharing system for massively distributed XML data. XPeer allows users to publish and query heterogeneous information without any significant administration efforts. XPeer tries to dispatch any given query to all and only the potentially relevant peers, exploiting a superpeer network to this aim.Source: 11th International Database Engineering and Applications Symposium (IDEAS 2007), pp. 199–207, Banff, Alberta, Canada, 6-8 September 2007
DOI: 10.1109/IDEAS.2007.4318105

See at: CNR People


2010 Report Unknown

D4SCIENCE-II - Report on Scenario Specific Technology Development
Candela L., Kakaletris G., Papanikos G.
D4Science II project aims to serve a set of different scientific communities under five (5) pre-identified scenarios, that consist of a set of users, applications and resources. In order for these scenarios to be realised on an interoperating eInfrastructures landscape, case-specific software implementation is required. This implementation is targeting (a) the migration or full implementation of applications that reside on the "outer" infrastructures in the new landscape and (b) the implementation of new functionality on gCube in order for the latter to cope with user requirements coming from NA5 tasks. The progress of the design and implementation of these components is being reported in this deliverable, which has the form of an on-line document produced by the processing of the thread of tickets managed in the TRAC system of the project that relate to the JRA2 tasksProject(s): D4SCIENCE-II via OpenAIRE

See at: CNR People


2012 Other Unknown

TagTick: tool for classification tagging of metadata records
Manghi P., Artini M., Atzori C., Bardi A., La Bruzzo S.
Tagging is a common Web 2.0 practice which allows users to collaboratively classify or evaluate the objects of an Information Space with the aim of improving object search, browse, and consumption. In this work, we focus on the problem of "classification tagging" over Information Spaces of objects stored in an Apache Solr full-text index. In such scenario, tags are assigned to objects by "data curator" users with the purpose of classification, while generic end-users will perceive tags as searchable and browsable object properties. To carry out their activities, data curators need classification tagging tools which allow them to "bulk" tag or untag sets of objects in temporary work sessions, where they can in "real-time" experiment the effect of their actions before making the changes visible to end-users. The implementation of such tools over Solr Information Spaces is a challenge, since bulk object updates in Solr are far from being real-time and in critical cases may slow down index performance. To solve these issues, we devised TagTick, a tool which offers to data curators a fully functional classification tagging environment. At its core, TagTick integrates the "tag virtualizer" module, which extends the APIs of Solr to support real-time, virtual, bulk-(un)tagging functionalities.

See at: CNR People


2008 Conference object Unknown

DLMedia: an ontology mediated multimedia information retrieval system
Straccia U., Visco G.
We outline DL-Media, an ontology mediated multimedia information retrieval system, which combines logic-based retrieval with multimedia feature-based similarity retrieval. An ontology layer is used to define (in terms of a fuzzy DLR-Lite like description logic) the relevant abstract concepts and relations of the application domain, while a content-based multimedia retrieval system is used for feature-based retrieval. We will illustrate its logical model, its architecture, its representation and query language and the preliminary experiments we conducted.Source: International Workshop on Uncertainty Reasoning for the Semantic Web, Karlsruhe, Germany, october 2008

See at: CNR People


2015 Report Unknown

Applicazione WEB: SMART | Open Data
Versienti L.
In the document is presented the software architecture developed for Smart Area.Source: Codice PUMA: cnr.isti/2015-TR-048, pp.1–5, 2015

See at: CNR People


2016 Conference object Unknown

An ontology-based affective computing approach for passenger safety engagement on cruise ships
Cinquepalmi A., Straccia U.
The safety of cruise passengers is a key element for a cruise company. Among various aspects, the ability to interpret and recognize cruisers' emotions, so that he/she feel safe, plays a central role in human communication. Affective computing addresses the computational processing of emotions. Current automatic emotion recognizers basically use automated classification tools to label emotions without capturing relations between biosignals and observations measured by the various sensors. This work proposes instead an Ontology Web Language (OWL) ontology-based emotion recognition framework by (i) monitoring human body vital signals through wearable, noninvasive sensors; and then the (ii) emotion detection is based on a ontology-based matchmaking process via non-standard automated reasoning services. A key factor is the use of so-called vague/fuzzy concepts, which are intrinsic in the realm of emotions and their dynamic evolution. To this end, we exploit Fuzzy Description Logics (Fuzzy DLs), which are the logical foundation of fuzzy OWL ontologies, i.e., OWL ontologies extended with vague/fuzzy concepts. An early prototype has been implemented w.r.t. a reference dataset and a preliminary experiment has being carried out with the aim to monitor the emotions experienced by cruise passengers while viewing safety video instructions.Source: Tenth International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies, pp. 203–208, Venice, Italy, 9-13 October 2016

See at: CNR People


2008 Conference object Unknown

A mediator system for data and multimedia sources
Beneventano D., Bergamaschi S., Gennaro C., Guerra F., Mordacchini M., Sala A.
Managing data and multimedia sources with a unique tool is a challenging issue. In this paper, the capabilities of the MOMIS integration system and the MILOS multimedia content management system are coupled, thus providing a methodology and a tool for building and querying an integrated virtual view of data and multimedia sources.Source: Data Integration through Semantic Technology Workshop at the 3rd Asian Semantic Web Conference, pp. 3–15, Bangkok, 12 February 2009

See at: CNR People


2009 Conference object Unknown

Top-k Retrieval for Automated Human Resource Management
Straccia U., Tinelli E., Di Noia T., Di Sciascio E.
We present a knowledge-based system, for skills and talent manage- ment, exploiting semantic technologies combined with top-k retrieval techniques. The system provides advanced distinguishing features, including the possibility to formulate queries by expressing both strict requirements and preferences in the re- quested profile and a semantic-based ranking of retrieved candidates. Based on the knowledge formalized within a domain ontology, the system implements an ap- proach exploiting top-k based reasoning services to evaluate semantic similarity between the requested profile and retrieved ones. System performance is discussed through the presentation of experimental results.Source: 17th Italian Symposium on Advanced Database Systems, pp. 161–168, Camogli, Genova, 21-24 June 2009

See at: CNR People


2002 Conference object Unknown

Mapping an automated survey coding task into a probabilistic text categorization framework
Giorgetti D., Prodanof I., Sebastiani F.
This paper describes how to applya probabilistic Text Categorization method to a different and new domain where documents are answers to open end questionnaires and codes viewed as categories consist of a hierarchical model. A reduced size training set mayb e used taking advantage of the hierarchical organization of categories. The system developed in this framework aims at helping psychologists in the evaluation of open end surveys inquiring about job candidates' competencies.Source: Advances in Natural Language Processing - Third International Conference - PorTAL 2002, pp. 115–124, Faro, Portugal, 23-26 June 2002

See at: CNR People


2016 Report Unknown

e-Infrastructure Catalogue of Services
Andreozzi S., Castelli D., Dappert A., Ferrari T., Krakowian M., Reetz J., Steijaert A.
This document outlines a framework for creating a Catalogue of Services (CoS), primarily intended for e-Infrastructure services. It describes services at a high level and makes them discoverable. It can also be used to identify overlapping efforts or gaps in the catalogued service landscape. The goal of this document is to define a framework that can be used to specify and implement a concrete catalogue. It is not a catalogue itself and does not list or describe services.Project(s): BlueBRIDGE via OpenAIRE

See at: CNR People


2006 Article Unknown

Assisting scientists to make their research results world wide freely available: an experience begun in the 90s
Biagioni S.
The ERCIM Technical Reference Digital Library service (ETRDL) was promoted by the European Research Consortium for Informatics and Mathematics (ERCIM) with the aim of managing grey literature produced by scientists working in the areas of information science and applied mathematics, making their research results immediately world wide available and also building a test-bed for their research activities. In this paper ETRDL is described and its future development presented. Section 1 traces the history of ETRDL from its conceptualization to the first experimental service given by the early ETRDL prototype. This was implemented to satisfy the requirements of the European IT scientific community, although realized as a part of NCSTRL (the US Networked Computer Science Technical Reference Library). Section 2 describes how further developments made ETRDL a system presently capable to manage DLs for very different types of literature. Section 3 discusses issues related to migration of ETRDL managed repositories to OpenDLib, an advanced digital library service system developed by ISTI-CNR. Advantages and difficulties of this migration are considered in the conclusions.Source: The Grey journal (Print) 2 (2006): 28–33.

See at: CNR People