information retrieval from web

Ngày tải lên: 16/03/2014, 19:20

Ngày tải lên: 22/06/2014, 23:20

... in Cross-Language Information Retrieval. IPSJ Transactions of Databases, TOD 15, 43(SIG 9):39–54. F. Sadat, M. Yoshikawa and S. Uemura. 2003. Learn- ing Bilingual Translations from Comparable Corpora to ... 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 ... 1983. Introduction to Modern Information Retrieval. New York, Mc Graw-Hill. S. Sekine. 2001. OAK System-Manual. New York Uni- versity. Bilingual Terminology Acquisition from Comparable Corpora and...

Ngày tải lên: 20/02/2014, 16:20

... trong truy xuất thông tin 1.1.1 Hệ thống truy xuất thông tin (Information Retrieval- IR) Hệ thống Truy xuất thông tin (Information Retrieval) là hệ thống thực hiện tìm kiếm tài liệu (thường là ... without Information Retrieval, IR OB P QEM    ) - Mô hình mở rộng truy vấn dựa trên ontology và kết hợp với hệ thống truy xuất thông tin (Query Expansion Model with Ontology-Based with Information ... thống truy xuất thông tin (Query Expansion Model with Ontology-Based and Probability with Information Retrieval, +IR OB P QEM   ) 2.4.2.2 Các bước thực hiện mở rộng truy vấn dựa trên Ontology...

Ngày tải lên: 17/02/2014, 08:47

... www.projectagency.com Project Management From web projects through to major change projects Project Agency 63 Project Management Tips from Project Agency Ltd ©Project Agency Tel: +44 ... us on events@projectagency.com Version 3: November 2007 63 Project Management Tips from Project Agency Ltd ©Project Agency Tel: +44 (0) 20 8446 7766 www.projectagency.com 6 30. ... items that may be causing concern. Review at your project meetings. 63 Project Management Tips from Project Agency Ltd ©Project Agency Tel: +44 (0) 20 8446 7766 www.projectagency.com 3 Project...

Ngày tải lên: 18/02/2014, 07:20

... weights. In this paper, we explore whether more sophisticated feature weighting schemes from Information Retrieval can enhance classification accuracy. We show that vari- ants of the classic tf.idf ... to word features. In this paper, we examine whether term weight- ing functions adopted from Information Retrieval (IR) based on the standard tf.idf formula and adapted to the particular setting ... classification in web forums. ACM Trans. Inf. Syst., 26(3):1–34. Timothy G. Armstrong, Alistair Moffat, William Web- ber, and Justin Zobel. 2009. Improvements that don’t add up: ad-hoc retrieval results...

Ngày tải lên: 20/02/2014, 04:20

... Ming Zhou. 2000. On the use of words and n-grams for Chinese information retrieval. In Proceedings of the 5th International Workshop Information Retrieval with Asian Languages, pages 141–148. ACM Press, November. Bo ... re- search described in this paper uses the information retrieval (IR) paradigm which has also been used by some researchers. Several sentiment information retrieval models were proposed in the framework ... benefit from the use of word relations information: some words have sentiment informa- tion only when used with others. For example, a noun dongxi (‘a thing’) does not seem to have any sentiment information...

Ngày tải lên: 20/02/2014, 12:20

... "Natural Language Information Retrieval: TREC°5 Report." Proceedings of TREC-5 confer° ence. Strzalkowski, Tomek. 1995. "Natural Language Information Re- trieval" Information Processing ... usefulness of summa- rization in context of an information retrieval sys- tem, where the user needs to rapidly and efficiently review the documents returned from search for an indication of relevance ... passage-search "query" is derived from the user's document search query rather than from the document title. 2. The distance of a passage from the beginning of the document is not...

Ngày tải lên: 20/02/2014, 18:20

... content. For example, the pair retrieve +information is extracted from any of the fol- lowing fragments: information retrieval system; retrieval of information from databases; and informa- tion ... Michael. 1991. " ;Retrieval Performance in Ferret: A Conceptual Information Retrieval System." Proceedings of ACM SIGIR-91, pp. 347-355. Sager, Naomi. 1981. Natural Language Information Processing. ... to as 'conceptual retrieval& apos;. The conceptual retrieval systems, though quite effective, are not yet mature enough to be con- sidered in serious information retrieval applications,...

Ngày tải lên: 20/02/2014, 21:20

... 1979. Representation and classification of knowledge and information for use in interactive information re- trieval. In Human Aspects of Information Science. Oslo: Norwegian Library School. 148 ... grams and the results co~ared to the evaluations of the original analysis and to one another. From the compar- isons can be determined: the extent to which discourse theory can be translated...

Ngày tải lên: 21/02/2014, 20:20

... people resort to, the Web has become the largest one for human expe- riences, especially with the proliferation of web- logs. While Web documents contain various types of information including ... Large-Scale Database of Personal Experiences and Opinions from Web Documents. In Proceedings of the International Conference on Web Intelligence. Valentin Jijkoun, Maarten de Rijke, Wouter ... Trends in In- formation Retrieval. Jihee Ryu, Yuchul Jung, Kyung-min Kim and Sung H. Myaeng. 2010. Automatic Extraction of Human Activity Knowledge from Method-Describing Web Articles. In Proceedings...

Ngày tải lên: 07/03/2014, 22:20

... 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 stereotypes from the web (e.g. “as ... thus, the Google queries “In * no one can hear you scream” (from Alien), “Reader, I * him” (from Jane Eyre) and “This is your brain on *” (from a famous TV advert) find new ways in which old patterns ... creative information retrieval to explore how an IR system can itself provide a degree of creative anticipation, acting as a mediator between the lit- eral specification of a meaning and the retrieval...

Ngày tải lên: 07/03/2014, 22:20

... contain, and from which resources the instances should be collected. 5 Conclusion In a departure from previous approaches to large- scale information extraction from unstructured text on the Web, this ... instances collected automat- ically from Web documents are passed as input to phase (2) from Figure 1, which acquires class attributes by mining a collection of Web search queries. The attributes ... large-scale information ex- traction take advantage of unstructured text avail- able from either Web documents (Banko et al., 2007; Snow et al., 2006) or, more recently, logs of Web search queries...

Ngày tải lên: 08/03/2014, 01:20

... trigram information into our training procedure. Corpus information might be used in more delicate way to improve the performance. References A. Berger and J. Lafferty, " ;Information retrieval ... new lan- guage models of information retrieval to the tradi- tional retrieval models: University of Twente [Host]; University of Twente, Centre for Telemat- ics and Information Technology, 2000. ... Croft, "A general language model for information retrieval, " 1999, pp. 316-321. G. Salton and M. J. McGill, Introduction to Modern Information Retrieval: McGraw-Hill, Inc. New York,...

Ngày tải lên: 08/03/2014, 01:20

... approximately one million news ar- ticles from the Associated Press, the New York Times, and the Xinhua News Agency. 3 Document Retrieval Since information retrieval systems supply the ini- tial ... arose from the recognition that the document does not occupy a privileged position in the space of information ob- jects as the most ideal unit of retrieval. Indeed, for certain types of information ... general less than the drops observed in the document retrieval runs. It appears possi- ble that the sentence retrieval algorithm was able to recover from a lower-quality result set, i.e., one with...

Ngày tải lên: 08/03/2014, 02:21

... resources for information retrieval tasks. Natural language in- formation retrieval. Kluwer Academic Publishers Dordrecht, NL. Bruce Croft and John Lafferty. 2003. Language Mod- eling for Information Retrieval. ... that our hypotheses hold in the context of Information Retrieval. 1 Introduction The task of an Information Retrieval (IR) system is to retrieve documents from a collection, in re- sponse to a user ... respectively. We use the queries 401-450 from the ad-hoc task of the 1999 Web track, for the WT2G test collection, and the queries 451-500 from the ad-hoc task of the 2000 Web track, for the WT10G test...

Ngày tải lên: 08/03/2014, 02:21

... extracting key pieces of information from voicemail messages, such as the identity and phone number of the caller. This task differs from the named entity task in that the information we are inter- ested ... value of the available data. One as- pect of information extraction (IE) is the retrieval of documents. Another aspect is that of identify- ing words from a stream of text that belong in pre- defined ... recently a great deal of work has also focused on extracting information from speech sources. Examples of this are the Spoken Document Retrieval (SDR) task (NIST, 1999), named entity (NE) extraction...

Ngày tải lên: 08/03/2014, 05:20

Ngày tải lên: 08/03/2014, 21:20

Ngày tải lên: 16/03/2014, 20:20

Ngày tải lên: 17/03/2014, 04:20