Advances in Distributed Agent-Based Retrieval Tools by Manuela Angioni, Emanuela De Vita (auth.), Vincenzo

By Manuela Angioni, Emanuela De Vita (auth.), Vincenzo Pallotta, Alessandro Soro, Eloisa Vargiu (eds.)

This quantity comprises revised and prolonged models of papers offered on the 4th variation of the overseas workshop on allotted and Agent-based Retrieval Toos (DART'10) held in June 2010, at the side of the Symposium on Human Language know-how for the knowledge Society, in Geneva, Swizerland. Practitioners and researchers engaged on pervasive and clever entry to net companies and allotted info retrieval met to proportion their effects and insights in interesting and demanding issues comparable to: (i) social media and collaboration, (ii) new demanding situations in seek expertise, (iii) sentiment research and opinion mining, (iv) allotted info retrieval, (v) pervasive intelligence. each bankruptcy, prior to discussing intensive the categorical subject, provides a accomplished assessment of similar paintings and state-of-the-art, within the desire of this quantity to be of use within the future years, to either researchers and students.

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The average distance between the mentions, the average chain length, the preferred category of the first element of a chain. Thus, for a corpus of public reports, we use the length of 4, the average distance is 2 phrases and the preferred type of the first element is a complete definite noun phrase. For a newspaper corpus, the length is 3 and the distance is 1. For each text segment (obtained after statistical topic segmentation (Choi et al. 2001)), CalcRef searches candidates for the first element of reference chains, from the expressions with a high degree of information content.

Wi nie all ma sla , lle t ee ar gr n oo n m . . . . . . . wi . . . . . . . . . . . . . . . . . . . w b . j ille urg n err ec ht en Fig. 2 A word alignment matrix In Figure 2 we see the intersection of links illustrated by filled boxes. Additional alignment points from the union of links are shown as empty boxes. Translational contexts are used to find distributionally similar words. We give some examples of translational co-occurrence vectors in Table 1.

Then, we focus on the RefGen architecture and on the linguistic annotations required (tagging, chunking and automatic named entities recognition). We explain the reference chains algorithm (CalcRef) and we discuss the results of the evaluation. 1 Corpus Analysis To identify reference chains properties we study the reference chains in a French corpus (about 50 000 tokens) composed of five various genres (Longo and Todirascu 2010): newspapers from Le Monde (2004), editorials from Le Monde Diplomatique (1980-1988), a novel Les trois Mousquetaires (Dumas, 1884), some European legal standards from the Acquis Communautaire (Steinberger et al.

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