Download e-book for kindle: Advances in Information Retrieval Theory: Third by ChengXiang Zhai (auth.), Giambattista Amati, Fabio Crestani

By ChengXiang Zhai (auth.), Giambattista Amati, Fabio Crestani (eds.)

ISBN-10: 364223318X

ISBN-13: 9783642233180

This publication constitutes the refereed court cases of the 3rd overseas convention at the concept of data Retrieval, ICTIR 2011, held in Bertinoro, Italy, in September 2011. The 25 revised complete papers and thirteen brief papers awarded including the abstracts of 2 invited talks have been conscientiously reviewed and chosen from sixty five submissions. The papers conceal themes starting from question enlargement, co-occurence research, consumer and interactive modelling, process functionality prediction and comparability, and probabilistic ways for score and modelling IR to themes on the topic of interdisciplinary ways or functions. they're equipped into the next topical sections: predicting question functionality; latent semantic research and observe co-occurrence research; question enlargement and re-ranking; comparability of knowledge retrieval structures and approximate seek; chance score precept and choices; interdisciplinary methods; consumer and relevance; consequence diversification and question disambiguation; and logical operators and descriptive approaches.

Show description

Read Online or Download Advances in Information Retrieval Theory: Third International Conference, ICTIR 2011, Bertinoro, Italy, September 12-14, 2011. Proceedings PDF

Best international books

Download e-book for kindle: Abelian Groups and Modules: International Conference in by James D. Reid, William J. Wickless (auth.), Paul C. Eklof,

This quantity comprises the refereed court cases of the overseas convention on Abelian teams and Modules held on the Dublin Institute of expertise in eire, from August 10 till August 14, 1998. The assembly introduced jointly greater than 50 researchers and graduate scholars from 14 nations around the globe.

Get International Courts and the Development of International PDF

This e-book encompasses a number of essays through prime specialists associated with the exceptional features of the student in honour of whom it really is released, Tullio Treves, who combines his educational heritage together with his functional reports of a negotiator of foreign treaties and a pass judgement on of a world tribunal.

Extra info for Advances in Information Retrieval Theory: Third International Conference, ICTIR 2011, Bertinoro, Italy, September 12-14, 2011. Proceedings

Example text

On Knowl. and Data Eng. 17(6), 734–749 (2005) 2. : Query difficulty, robustness, and selective application of query expansion. I. ) ECIR 2004. LNCS, vol. 2997, pp. 127–137. Springer, Heidelberg (2004) 3. : A performance prediction approach to enhance collaborative filtering performance. , van Rijsbergen, K. ) ECIR 2010. LNCS, vol. 5993, pp. 382–393. Springer, Heidelberg (2010) 4. : Text retrieval methods for item ranking in collaborative filtering. , Mudoch, V. ) ECIR 2011. LNCS, vol. 6611, pp.

Alternatively, fusion of multiple rankings can be used to produce a pseudo effective ranking [8]. Indeed, the merits of fusion, in terms of retrieval effectiveness, have been acknowledged [9]. Pearson’s correlation between the given result list and that produced by fusion served for query-performance prediction [8]. Clearly, this prediction approach is a specific instance of our framework (with α(q) = 1 and β(q) = 0). Intermediate summary. As was shown above, various post-retrieval predictors can be derived from Eq.

Furthermore, if we compare the background model with the user model, we obtain more insights about how our models are discriminating distinctive from mainstream behavior. This is depicted in Fig. 2. In this situation, we select those terms which maximize the difference between the user and background models. Then, for this subset of the terms, we sort the vocabulary with respect to its collection probability, and then we plot the user probability model for each of the terms in the vocabulary. These figures show how the most ambiguous user obtains a similar distribution to that of the background model, while the distribution of the less ambiguous user is more different.

Download PDF sample

Advances in Information Retrieval Theory: Third International Conference, ICTIR 2011, Bertinoro, Italy, September 12-14, 2011. Proceedings by ChengXiang Zhai (auth.), Giambattista Amati, Fabio Crestani (eds.)


by Kevin
4.2

Rated 4.79 of 5 – based on 7 votes