lecture information retrieval and web search engines

... 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

Ngày tải lên: 30/03/2014, 23:20

Ngày tải lên: 06/07/2014, 15:37

... xét đặc điểm vừa phải mà nó không đặc biệt liên - 2 - Web mining in Thematic Search Engines I.Giới thiệu Gần đây sự cải tiến của công nghệ Search engine có thế tạo cho người sử dụng Internet một ... thuật tối ưu hoá, mà thường được gọi là Web mining (khai phá dữ liệu Web) . Ở đây, chúng ta mô tả phương thức cải tiến cho kết quả tìm kiếm chuẩn trong Search engine, ở tài liệu và trang có giá ... nhiều đường khác nhau. Hiện nay phần lớn mọi người dùng Search engine cung cấp khả năng tìm kiếm trên cơ sở dữ liệu của hàng tỉ trang Web, nơi mà những câu truy vấn được thực hiện ngay tức khắc....

Ngày tải lên: 26/04/2013, 10:08

... 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

... M. Uchiyama and A. Konno, "Modeling, Controllability and Vi- bration Suppression of 3D Flexible Robots," Robotics Research, The Seventh International Symposium, G. Giralt and G. Hirzinger ... where p~, Apt, Pl and P2 are position/orientation vectors corresponding to s~, st, Sl and s2, respectively. The positions/orientations p,, Pl and P2 are those of S~, $1 and $2 in Figure 1.2, ... The velocity and force ellip- soids, and extension of grasp stability and manipulability are presented in Section 2.3. Section 2.4 presents a number of examples. Terminology and Notation:...

Ngày tải lên: 05/03/2014, 15:20

... [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

... 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: ... 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 ... improved un- derstanding of question-queries by search engines. 2 Related work There has been some work on studying and exploit- ing linguistic structure in web queries. Spink and Ozmultu (2002)...

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

Ngày tải lên: 23/03/2014, 17:20

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Ngày tải lên: 31/03/2014, 21:20

Ngày tải lên: 31/03/2014, 21:20

Ngày tải lên: 21/06/2014, 07:20

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Ngày tải lên: 06/07/2014, 15:37

Ngày tải lên: 14/08/2014, 14:21

... computer games and as web- based games. This chapter looks at two traditional games: hangman and word search. First, however, we need to take a closer look at how ActionScript handles strings and text ... wordsSprite:Sprite; Word Search 315 Using letters and words for games has been popular since the mid-20th century with board games, such as Scrabble, and paper games, such as crosswords and word searches. These ... Hangman and Word Search 324 So we’ll start with an empty grid and select random words from the list, random posi- tions, and random directions. Then, we’ll try to insert the word. If it doesn’t...

Ngày tải lên: 29/09/2013, 20:20

... managers and researchers alike will find many new insights to better manage information security within the pages of Information Risk and the Economics of Security. References Acohido, B. and ... Consumer Webmasters and Mid-Tier Web Hosts 186 4 Vulnerability Disclosure 188 5 Methods for Identifying Most-Infected Web Hosts 190 6 Web Host Infection Results 191 6.1 The Panda ... (Gordon and Loeb 2006) and the market-based pressures that impact cyber security (Anderson and Moore 2006, Kannan and Telang 2005). In this introductory chapter, we present a collage of information...

Ngày tải lên: 18/10/2013, 17:15