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2011 Conference article Restricted
Blog distillation via sentiment-sensitive link analysis
Berardi Giacomo, Esuli Andrea, Sebastiani Fabrizio, Silvestri Fabrizio
In this paper we report a new approach to blog distillation, defined as the task in which, given a user query, the system ranks the blogs in descending order of relevance to the query topic. Our approach is based on the idea of adding a link analysis phase to the standard retrieval-by-topicality phase. However, differently from other link analysis methods, we try to analyse whether a given hyperlink is a citation with a positive or a negative nature, i.e., if it expresses approval or disapproval of the linked page by the linking page. We report the results of testing our method on the Blogs08 collection used in the 2008 and 2009 editions of the TREC Blog Track.Source: 2nd Italian Information Retrieval Workshop, IIR 2011, pp. 6–12, Milano, IT, 27-28 gennaio 2011

See at: ceur-ws.org Restricted | CNR ExploRA


2011 Conference article Restricted
ISTI @ TREC Microblog Track 2011: Exploring the Use of Hashtag Segmentation and Text Quality Ranking
Berardi Giacomo, Esuli Andrea, Marcheggiani Diego, Sebastiani Fabrizio
In the first year of the TREC Micro Blog track, our participation has focused on building from scratch an IR system based on the Whoosh IR library. Though the design of our system (CipCipPy) is pretty standard it includes three ad-hoc solutions for the track: (i) a dedicated indexing function for hashtags that automatically recognizes the distinct words composing an hashtag, (ii) expansion of tweets based on the title of any referred Web page, and (iii) a tweet ranking function that ranks tweets in results by their content quality, which is compared against a reference corpus of Reuters news. In this preliminary paper we describe all the components of our system, and the efficacy scored by our runs. The CipCipPy system is available under a GPL license.Source: 20th Text Retrieval Conference, TREC 2011, Gaithersburg, US, November 15-18 2011

See at: trec.nist.gov Restricted | CNR ExploRA