difference between information retrieval and web search

... the effective- ness of ? and @, and indirectly that of ^ too, by comparing the use of ? and @ as category builders to a hand-crafted gold standard like WordNet. Other researchers have likewise ... SIGIR conference on Research and development in information retrieval. 287 Veale and Hao (2007) exploit the simile frame “as X as Y” to harvest a great many common similes and their underlying ... level, as in “priests and imams” or “mosques and synagogues”. More gen- erally, consider the pattern “X and Y”, where X and Y are proper-names (e.g., “Zeus and Hera”), or X and Y are inflected...

Ngày tải lên: 07/03/2014, 22:20

... method. Differences between test and comparison methods were estimated at 2.5, 4.0, and 10.0 ng/mL (2.5, 4.0, and 10.0 àg/L) for tPSA and 15%, 20%, and 25% for percentage of fPSA. Relative differences ... total PSA level between 4 ng/ml and 10 ng/ml. A PSA level of 4 to 10 ng/ml is considered slightly elevated levels between 10 and 20 ng/ml are considered moderately elevated; and anything above ... diagnosis and treatment of any and all medical conditions. I add a link with details of this subject http://www.labtestsonline.org.uk/ understanding/analytes/psa/test.html Intermethod Differences...

Ngày tải lên: 21/03/2014, 12:19

... Meeting of the ACL and the 4th IJCNLP of the AFNLP, pages 1075–1083, Suntec, Singapore, 2-7 August 2009. c 2009 ACL and AFNLP Exploiting Bilingual Information to Improve Web Search Wei Gao 1 , ... algorithm. 1 Introduction Web search quality can vary widely across lan- guages, even for a single query and search en- gine. For example, we might expect that rank- ing search results for the query ... (Hwa et al., 2005; Smith and Smith, 2004; Burkett and Klein, 2008; Snyder and Barzi- lay, 2008), named entity recognition (Chang et al., 2009), and topic clustering (Wu and Oard, 2008). In this...

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Ngày tải lên: 24/11/2013, 08:11

... translations in Chinese web page snippets. We thus base our system on web search engine: retrieving candidates from returned snippets, combining both linguistic and statistical information to find ... is indispensable in cross language information retrieval nowadays. We propose an approach of combining lexical information, web sta- tistics, and inverse search based on Google to backward ... recur- rences, and relative positions) are exploited to give these candidates a score. In the last step, the candidates with higher scores are sent to Google again. Recurrence information and relative...

Ngày tải lên: 20/02/2014, 12:20

... ASLIB’99 Translating and the Computer 21. N. Kando. 2001. Overview of the SecondNTCIR Work- shop. In Proc. Second NTCIR Workshop on Research in Chinese and Japanese Text Retrieval and Text Sum- marization. P. ... vectors of source and target languages. First experiments were conducted on the several combinations of weighting parameters and schemes of SMARTretrieval system for documents terms and query terms. ... Corpora to Cross-Language Information Retrieval: Hybrid Statistics-based and Linguistics-based Approach. In Proc. IRAL 2003, Sapporo, Japan. G. Salton. 1971. The SMART Retrieval System, Experi- ments...

Ngày tải lên: 20/02/2014, 16:20

... [Mechanical Translation and Computational Linguistics, vol.11, nos.1 and 2, March and June 1968] Paraphrase Generation and Information Retrieval from Stored Text by P. W. Culicover, IBM Boston Programming ... relations; thus G j (A,C) if and only if G i (A,B) and G k (B,C) and A is an X, B is a Y, and C is a Z. The domination relationship need not hold be- tween A and C in such cases. 78 Signaling ... the landlord), and sen- tence B contains the noun phrase "(the fact) that NP 1 was V j -ed (by NP 2 )." If sentences A and B meet one of Condition (x), and one of Conditions II and...

Ngày tải lên: 16/03/2014, 19:20

... sys- tems using web knowledge and Wikipedia (see Du- mais et al. (2002) and the references therein). Our findings call for a greater synergy between QA and IR in the web search context and an improved ... Logs: Turning Search Usage Data into Knowledge. Foundations and Trends in Information Retrieval, 4(1):1–174. Amanda Spink and H. Cenk Ozmultu. 2002. Char- acteristics of question format web queries: ... Aula, Rehan M. Khan, and Zhiwei Guan. 2010. How does search behavior change as search becomes more difficult? In Proc. 28th CHI, pages 35–44. Ricardo Baeza-Yates and Alessandro Tiberi. 2007. Ex- tracting...

Ngày tải lên: 17/03/2014, 00:20

... Text Retrieval. " Working Notes of AAAI-97 Spring Symposiums on Cross-Language Text and Speech Retrieval, 131-139. Oard, D.W. and Dorr, B.J. (1996) A Survey of Multilingual Text Retrieval. ... Salton, G. and Buckley, C. (1988) "Term Weighting Approaches in Automatic Text Retrieval. " Information Processing and Management, Vol. 5, No. 24, 513-523. Sheridan, P. and Ballerini, ... TREC topics 301-350 (Harman, 1997), and Smart information retrieval system (Salton and Buckley, 1988). The text collection contains 556,077 documents, and is about 2.2G bytes. Because the...

Ngày tải lên: 17/03/2014, 07:20

... literature inclu des Ball (1999 and 2002), Svensson (2000), Taylor (1999), McCal- lum and Nelso n (1999 and 200 0), and Galí and Monacelli (2005). Taylor (2000 and 2001) presents an interesting ... contractionary-depreciation Thailand. I draw from McCallum and Nelson (1999 and 2000) for parameters of shock persistence. The two I use in the present paper are  f = 0:5 and  x = 0: I also reset McCallum and Nelson’s value ... (2003=100) Thailand (2003=100) Source: IMF. 45 ECB Working Paper Series No. 548 November 2005 by Smets (1997), Smets and Wouters (1999), Kim and Roubini (2000) and Cushman and Zha (1997), a...

Ngày tải lên: 22/03/2014, 23:20

... ACL and AFNLP A Combination of Active Learning and Semi-supervised Learning Starting with Positive and Unlabeled Examples for Word Sense Disambiguation: An Empirical Study on Japanese Web Search ... The accuracies of with-EM, random and with- out-EM are gradually increasing according to the percentage of added hand labeled examples and catch up that of human and converge at 30 per- centage ... evaluation are randomly divided 10% test set and 90% training set. Table 3 shows the each full text search query and the number of initial positive examples and the per- centage of it in the training...

Ngày tải lên: 23/03/2014, 17:20

... Logic, and Language, chapter 6, pages 145–177. Cambridge University Press. Lauri Karttunen and Stanley Peters. 1979. Con- ventional implicature. In Choon-Kyu Oh and David Dinneen, editors, Syntax and ... advertising and by implementing new user interfaces. Work will also be needed to take more account of the fact that search is often an iterative and even interactive process. As noted by Lewis and Sparck-Jones ... assertion and presupposition and making use of alternative phrases and the “use existing objects” heuristic. A simple pattern matching approach would fail to capture examples requiring knowledge and...

Ngày tải lên: 23/03/2014, 19:20

... Stairmand. 1997. Textual context anal- ysis for information retrieval. In Proceedings of the 20th Annual International A CM-SIGIR Conference on Research and Development in Information Retrieval, ... information retrieval. In Proceedings of the RIA O 94 Conference. Hinrich Schutze and Jan 0. Pederson. 1997. A cooccurrence-based thesaurus and two applica- tions to information retrieval. Information ... EACL '99 Complementing WordNet with Roget's and Corpus-based Thesauri for Information Retrieval Rila Mandala, Takenobu Tokunaga and Hozumi Tanaka Abstract This paper proposes a method...

Ngày tải lên: 31/03/2014, 21:20

... Homonymy and Polysemy in Information Retrieval Robert Krovetz NEC Research Institute" 4 Independence Way Princeton, NJ. 08540 krovetz@research.nj.nec.com Abstract This paper discusses research ... research described in this paper is one of the largest studies ever done. We have examined the lexicon as a whole, and focused on the distinction between homonymy and polysemy. Other research ... what work remains for the future. 2 Lexical Ambiguity and Information Retrieval 2.1 Background Many retrieval systems represent documents and queries by the words they contain. There are two...

Ngày tải lên: 31/03/2014, 21:20

Ngày tải lên: 21/06/2014, 07:20