information retrieval web search engines

... of Search Relevance  Web Search and Analysis  Trends in Information Retrieval Trang 4Copyright © 2011 Ramez Elmasri and Shamkant NavatheInformation Retrieval (IR) Concepts  Information retrieval ... NavatheWeb Search and Analysis  Vertical search engines  Topic-specific search engines Trang 39Web Analysis and Its Relationship to IR Goals of Web analysis:  Improve and personalize search ... organization, storage, searching, and retrieval of information” Trang 5Information Retrieval (IR) Concepts (cont‟d.)  User‟s information need expressed as a free-form search request  Keyword search query

Ngày tải lên: 30/01/2020, 20:55

... t~t y~u vLraco y nghia khoa hQc vua mang y nghia thvc t~ cao Trang 6Web search co ngu6n g6c Ia trich xuAt thong tin (information retrievalho?c g<)i t~t Ia IR), mQt trong nhfrng linh V\l'Ccua ... v~nSQL cho thu th~p dfr Ii~u van ban Di~u do noi len r~ng Web search Ia ling d\lng quan tr<)ng duy nh~t cua IR 6 muc dQ Ian han, web search giup dO'IR Th\l'c S\l',S\l'thanh cong Ian cuacac cong ... vi~c tim kiSmthong tin v@Web mining, thi diu troy vfin cua hQ co thS la "Web mining" dSnmQt IR ho~c cong C\l tim kiSm "Web mining" duQ'c phan tlch 113. "Web ANDmining" H~th6ng

Ngày tải lên: 01/09/2023, 22:02

... the differenttypes of webpages, webpage developers are adapting their webpages in order to woo the major commercial search engines (See the sidebar on commercialsearch engines later in this chapter.) ... with thecurrent state of search engines It is a critical time for search engines andthe future of the Web itself, as both ultimately depend on how easily userscan find the information they are looking ... currentstate of search engines It continues to be a dynamic time for search enginesand the future of the Web itself, as both ultimately depend on how easilyusers can find the information they

Ngày tải lên: 06/07/2014, 15:37

... 1CONTENT CONSISTENCY FOR WEB-BASED INFORMATION RETRIEVAL CHUA CHOON KENG NATIONAL UNIVERSITY OF SINGAPORE 2005 Trang 2CONTENT CONSISTENCY FOR WEB-BASED INFORMATION RETRIEVAL CHUA CHOON KENG ... existing web and P2P consistency models We also survey some work related on HTTP headers In chapter 3, we present the content consistency model and show its implication to web-based information retrieval ... consistency 2.4 Studies on Web Resources and Server Responses Wills et al [27, 28] study on characterizing information about web resources and server responses that is relevant to web caching Their data

Ngày tải lên: 03/10/2015, 21:56

... Data on the Web: Vietnamese to EnglishTranslation Trang 7Searching the web for translation?• Comparable corpus on the web: Trang 8Searching the web for translation?• Mixed language web pages: ... translations • Cross-language Information Retrieval (CLIR) • Machine Translation (MT) • Machine-Readable Dictionary (MRD) Trang 4software) Trang 5Quang Dung) Trang 6Searching the web for translation?• ... co-occurred terms in web log • Use co-occurred terms in search query (in CLIR) • Search Google, with VS, and select Vietnamese words, VEX, with high frequency Overture Search Log Trang 12Original

Ngày tải lên: 27/08/2017, 00:19

... published on the Web in a way to provide usable information for search engines We then address meta-searchand multi-domain search, two approaches for search engine integration; seman-tic search, an ... Exercises 68 Trang 10Contents xiPart II Information Retrieval for the Web 6 Search Engines 71 6.1 The Search Challenge 71 6.2 A Brief History of Search Engines 72 6.3 Architecture and ... documents about information retrievalDocument content D1 information retrieval students work hard D2 hard-working information retrieval students take many classes D3 the information retrieval workbook

Ngày tải lên: 04/03/2019, 10:02

... published on the Web in a way to provide usable information for search engines We then address meta-searchand multi-domain search, two approaches for search engine integration; seman-tic search, an ... Exercises 68 Trang 10Contents xiPart II Information Retrieval for the Web 6 Search Engines 71 6.1 The Search Challenge 71 6.2 A Brief History of Search Engines 72 6.3 Architecture and ... documents about information retrievalDocument content D1 information retrieval students work hard D2 hard-working information retrieval students take many classes D3 the information retrieval workbook

Ngày tải lên: 12/03/2019, 13:44

... in Web search engines In Web search, there are at least three ways of coping with ambiguity: • Promoting diversity in the search results (Clarke et al., 2008): given the query ”oa-sis”, the search ... conclusions on Web searches (ii) our work does not involve any study of diversity from the point of view of Web users (i.e when a Web query addresses many different use needs in prac-tice); research ... SIGIR con-ference on Research and development in information retrieval, pages 139–146 ACM. C Carpineto, S Osinski, G Romano, and Dawid Weiss 2009 A Survey of Web Clustering Engines. ACM Computing

Ngày tải lên: 20/02/2014, 04:20

... provides information about the gen-eral distribution of term i amongst documents of all classes, without providing any additional evi-dence of class preference The utilization of idf in information retrieval ... Robertson et al., 1996) is a probabilistic model for information retrieval and is one of the most popular and effective algorithms used in formation retrieval For ease of reference, we in-corporate ... weighting functions is a very active research area in infor-mation retrieval and it is outside the scope of this paper to provide an in-depth analysis but signifi-cant research can be found in Salton

Ngày tải lên: 20/02/2014, 04:20

... Trang 1Creative Language Retrieval:A Robust Hybrid of Information Retrieval and Linguistic Creativity Tony Veale School of Computer Science and ... 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 ... California Press. Van Rijsbergen, C J (1979) Information Retrieval. Oxford: Butterworth-Heinemann. Veale, T (2004) The Challenge of Creative Informa-tion Retrieval ComputaInforma-tional Linguistics

Ngày tải lên: 07/03/2014, 22:20

... substitute the nominalization, etc., which represents it 3 Information Retrieval from Texts Let us now turn to the problem of retrieving information from stored texts As mentioned in Part 1, we ... Introduction This paper deals with the use of paraphrase relationships to effect the retrieval of stored English text and the information contained in stored English text Through- out the discussion I ... entire extent of information which we possess about the event Since Condition II is met, it doesn't matter whether the question is asked in the active or in the passive, or if the information is

Ngày tải lên: 16/03/2014, 19:20

... International ACM SIGIR Conference on Research and Development in Information Retrieval, pages 258–265. R Krovetz and W B Croft 1992 Lexical ambiguity and information retrieval ACM Transactions on In-formation ... language model-ing approach to information retrieval In Proceedmodel-ings of the 21st International ACM SIGIR Conference on Research and Development in Information Retrieval, pages 275–281. J M ... Research and De-velopment in Information Retrieval, pages 142–151. Trang 10M Sanderson 2000 Retrieving with good sense Infor-mation Retrieval, 2(1):49–69. H Sch¨utze and J O Pedersen 1995 Information

Ngày tải lên: 23/03/2014, 14:20

... wi−1wiwi+1 is submitted as a query to the search engine For all experiments we used the publicly accessible Google Web Search API.1The search engine returns a search result for the query consisting ... help for in-domain NER Cucerzan (2007) uses Wikipedia and web search frequencies to improve NE disam-biguation, including simple web search frequencies Trang 3BASE: lexical and input-text part-of-speech ... proportion of search results that contain a URL with the part “staff”, P (PER) is the proportion of search results where the search token w0 is PER andP (staff,PER) is the proportion of search results

Ngày tải lên: 23/03/2014, 16:20

... and Qiang Yang 2008 Web query translation via web log mining In Proceedings of the 31st annual international ACM SIGIR confer-ence on Research and development in information retrieval, SIGIR ’08, ... translation accuracy on cross-lingual patent retrieval In Proceedings of the 32nd international ACM SIGIR conference on Research and develop-ment in information retrieval, SIGIR ’09, pages 674–675. Jianfeng ... for english-japanese cross-language information retrieval In In Proceedings of MT Summit VII Workshop on Ma-chine Translation for Cross Language Information Retrieval, pages 181–188. Kimmo Kettunen

Ngày tải lên: 24/03/2014, 03:20

... become the victim of misused search engines Over the last year or so, Hackers have begun to use search engines to find potentially vulnerable web applications to attack The search engine doesn’t actually ... all of this information Most popular search engines are advanced enough to provide robust capabilities to search for very targeted items You can search within a single domain, you can search for ... white paper, an attacker can data mine any of the commonly used search engines to find target databases to attack So, what makes search engines such a powerful tool for an attacker? It is their ability

Ngày tải lên: 13/06/2014, 12:56

... Trang 1Volume 2010, Article ID 172961, 14 pagesdoi:10.1155/2010/172961 Research Article Query-by-Example Music Information Retrieval by Score-Informed Source Separation and Remixing Technologies ... drum parts 1 Introduction One of the most promising approaches in music information retrieval is query-by-example (QBE) retrieval [1 7], where a user can receive a list of musical pieces ranked ... original work is properly cited We describe a novel query-by-example (QBE) approach in music information retrieval that allows a user to customize query examples by directly modifying the volume

Ngày tải lên: 21/06/2014, 07:20

... opportunistic information retrieval is the most energy efficient This observation leads to the design of the optimal sensor duty cycle Keywords and phrases: sensor networks, distributed information retrieval, ... informa-tion retrieval protocol that determines which sensors should transmit and the rates of transmissions needs to be designed for efficient channel utilization Distributed information retrieval ... Information retrieval in sensor networks the best channel to transmit is optimal Other opportunistic schemes include [6,7,9,10,11,12,13] and the references therein The idea of opportunistic information

Ngày tải lên: 23/06/2014, 00:20

... INTRODUCTION In many applications, sensor networks operate in three phases: sensing, information retrieval, and information pro-cessing As a typical example, in physical environmental monitoring, ... architecture: information retrieval and processing, which are strongly coupled To achieve the optimal perfor-mance of the sensor network, the two phases should be con-sidered jointly The key to information ... schemes only consider the MAC layer performance, that is, throughput The effect of MAC for information retrieval on information process-ing is analyzed in [7,8] for infinite and finite sensor density

Ngày tải lên: 23/06/2014, 00:20

... index searcher that will perform the search Lucene.Net.Search.IndexSearcher searcher = new Lucene.Net.Search.IndexSearcher(dir); Trang 29 Search 29 //build a query object Lucene.Net.Index.Term searchTerm ... Lucene.Net.Index.Term("content", "fox"); Lucene.Net.Search.Query query = new Lucene.Net.Search.TermQuery(searchTerm); //execute the query Lucene.Net.Search.Hits hits = searcher.Search(query); //iterate over the ... IndexSearcher Primary class  searching indices stored in a given directory  calculates a score for each of the documents that match a given query 24 Trang 25Search with Lucene Search ResultTrang 26

Ngày tải lên: 02/07/2014, 14:12