generalized vector space model in information retrieval ppt
Báo cáo khoa học: "A Generalized Vector Space Model for Text Retrieval Based on Semantic Relatedness" pot
Ngày tải lên :
08/03/2014, 21:20
... combination of the term vectors {ti } which represents each dk in the vector space Similarly, any query q can be modelled as a vector q that is a linear combination of the term vectors In the standard ... Modern Information Retrieval Addison Wesley D McCarthy, R Koeling, J Weeds, and J Carroll 2004 Finding predominant word senses in untagged text In Proc, of the 42nd ACL, pages 280–287 Spain S Brody, ... International Conference on Machine Learning, pages 296–304 S.K.M Wong, W Ziarko, V.V Raghavan, and P.C.N Wong 1987 On modeling of information retrieval concepts in vector spaces ACM Transactions on...
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Báo cáo khoa học: "a Chat-oriented Dialogue System based on the Vector Space Model" ppt
Ngày tải lên :
07/03/2014, 18:20
... probabilistic logic for information retrieval In Advances in Information Retrieval, Lecture Notes in Computer Science 3408:1-6 Vicedo J (2002) SEMQA: A semantic model applied to question answering systems ... Building a new Internet chat system for sharing timing information In Proc of the 4th SIGDIAL, pp 97-104 Pieraccini R, Suendermann D, Dayanidhi K, Liscombe J (2009) Are we there yet? Research in ... (1983) Introduction to modern information retrieval McGraw-Hill Salton G, Buckley C (1988) Term-weighting approaches in automatic text retrieval Information Processing & Management 24(5):513-523...
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Báo cáo khoa học: "The Effect of Translation Quality in MT-Based Cross-Language Information Retrieval" pptx
Ngày tải lên :
17/03/2014, 04:20
... 78-93 Kui-Lam Kwok 1997 Comparing Representation in Chinese Information Retrieval In Proc of the 20th Annual ACM Conference on Research and Development in Information Retrieval (SIGIR-1997), pages ... 1996 Querying Across Languages: A Dictionary-Based Approach to Multilingual Information Retrieval In Proc of the 19th Annual ACM Conference on Research and Development in Information Retrieval ... Jianfeng Gao, Jian Zhang, and Ming Zhou 2000 On the Use of Words and N-grams for Chinese Information Retrieval In Proc of the Fifth International Workshop on Information Retrieval with Asian Languages...
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Báo cáo khoa học: "Should we Translate the Documents or the Queries in Cross-language Information Retrieval?" ppt
Ngày tải lên :
17/03/2014, 07:20
... cross-language information retrieval In 20th Annual ACM SIGIR Conference on Information Retrieval L Ballasteros and W.B Croft 1998 Resolving ambiguity for cross-language retrieval In 21th Annual ... may hinder retrieval based on the Okapi formula, which tends to emphasize matching unigrams However, separate monolingual retrieval experiments indicate that the advantages gained by indexing ... of query translation Surprisingly, we find that the hybrid system involving fast document translation and monolingual retrieval continues to outperform monolingual retrieval We thus conclude that...
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Báo cáo khoa học: "Noun-Phrase Analysis in Unrestricted Text for Information Retrieval" pptx
Ngày tải lên :
17/03/2014, 09:20
... potentially valuable in indexing In practice, of course, the indexing term space has to be limited, so it is necessary to select a subset of phrases for indexing Short phrases (often nominal compounds) ... CLARIT processing-weighting of terms, division of documents into subdocuments (passages), vector- space modeling, etc. was used in its default mode As a baseline Figure 2: Formulas for Scoring The association ... Content based text handling Information Processing and Management, Vol 26(2), pp 219-226 Alan F Smeaton 1992 Progress in application of natural language processing to information retrieval The Computer...
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Tài liệu Exploring Privacy Risks in Information Networks ppt
Ngày tải lên :
16/01/2014, 16:33
... thoroughly investigating the problem domain With an understanding of the privacy risk environment in information networks, we have a good starting-point for recognising, mitigating or preventing intrusions ... marketing (something for which user information is needed) In addition, in an increasingly networked environment, where new technologies and infrastructures are being rapidly introduced into the ... different online registers or databases containing personal information may be combined by powerful search engines in order to get an apprehension about groups of individuals In effect, this information...
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Tài liệu Báo cáo khoa học: "Sentiment Vector Space Model for Lyric-based Song Sentiment Classification" pdf
Ngày tải lên :
20/02/2014, 09:20
... SVM-light algorithm and find that 1,868 of 2,001 VSM training vectors are selected as support vectors while 1,222 s-VSM support vectors are selected This indicates that the VSM model indeed suffers the ... classification has been investigated since 1990s in audio signal processing community and research works are mostly found relying on audio signal to make a decision using machine learning algorithms (Li ... of Meaning World Scientific Publishing 2006 T Joachims Learning to Classify Text Using Support Vector Machines, Methods, Theory, and Algorithms Kluwer (2002) S.-M Kim and E Hovy Determining the...
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Tài liệu Báo cáo khoa học: "Bilingual Terminology Acquisition from Comparable Corpora and Phrasal Translation to Cross-Language Information Retrieval" pptx
Ngày tải lên :
20/02/2014, 16:20
... expansion terms Effects of extracting bilingual terminology from bi-directional comparable corpora, pruning using linguistics-based knowledge and re-scoring using different phrasal translation ... translation/expansion and thus document retrieval Conclusion We investigated the approach of extracting bilingual terminology from comparable corpora in order to enrich existing bilingual lexicons and enhance ... translation CLIR SMART information retrieval system (Salton, Re-scoring through a Test Collection Large-scale test collections could be used to re- 1971), which is based on vector space model, was score...
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Tài liệu Báo cáo khoa học: "Lexical transfer using a vector-space model" doc
Ngày tải lên :
20/02/2014, 18:20
... corpora and data sparseness to be reduced Vector- space model This section explains our trial for applying a vector- space model to lexical transfer starting from a basic idea 2.1 Basic idea We can ... full-body> Thesaurus Input sentence Bilingual corpus Vector generator Input vector, I Corpus vector, {E} Cosine calculation The most similar vector Figure System Configuration Figure outlines our proposal ... by observing the environment including the context, world knowledge, and target words in the neighborhood The most influential elements in the environment are of course the other words in the source...
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Tài liệu Báo cáo khoa học: "Summarization-based Query Expansion in Information Retrieval" doc
Ngày tải lên :
20/02/2014, 18:20
... "Natural Language Information Retrieval: TREC°5 Report." Proceedings of TREC-5 confer° ence Strzalkowski, Tomek 1995 "Natural Language Information Retrieval" Information Processing and Management, ... result in a decreased accuracy of information, and the time required to review that information This interpretations is particularly useful, though it isn't the only one acceptable, in summarizing ... far, with the following exceptions: Elimination of stopwords: Documents are indexed using original words minus selected "stopwords" that include all closed-class words (determiners, prepositions,...
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Tài liệu Báo cáo khoa học: "GPSM: A GENERALIZED PROBABILISTIC SEMANTIC MODEL FOR AMBIGUITY RESOLUTION" pptx
Ngày tải lên :
20/02/2014, 21:20
... computer manuals for training or testing They are divided into 10 parts; each part contains 100 sentences In close tests, parts are used both as the training set and the testing set In open tests, the ... annotations (Semi) for the input words wl" ({wl wn}) A good encoding scheme for the Fi's will allow us to take semantic information into account without using redundant information Hence, we will ... Ambiguity Resolution Using A Discrimination and Robustness Oriented Adaptive Leaming Algorithm", to appear in Proceedings of COLING-92, 14th Int Conference on Computational Linguistics, Nantes,...
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SANS Institute InfoSec Reading Room: Applying the OSI Seven Layer Network Model To Information Security pptx
Ngày tải lên :
05/03/2014, 21:20
... SANS Institute 2004, As part of the Information Security Reading Room Author retains full rights Page 26 Applying the OSI seven-layer model to Information Security Extending the model - The Infosec ... SANS Institute 2004, As part of the Information Security Reading Room Author retains full rights Page 15 Applying the OSI seven-layer model to Information Security file and printer sharing) ... upon the integrity of the physical layer [7] © SANS Institute 2004, As part of the Information Security Reading Room Author retains full rights Page Applying the OSI seven-layer model to Information...
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Báo cáo khoa học: "Examining the Content Load of Part of Speech Blocks for Information Retrieval" pptx
Ngày tải lên :
08/03/2014, 02:21
... Our retrieval baseline consists in testing the performance of each term weighting scheme, with each of the two test collections, using the original queries We introduce two retrieval combinations ... distinct property of improving retrieval performance when queries not contain noise, but harming retrieval performance when queries contain noise, furnishing us with a strong baseline, against ... Using NLP or NLP resources for information retrieval tasks Natural language information retrieval Kluwer Academic Publishers Dordrecht, NL Bruce Croft and John Lafferty 2003 Language Modeling...
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Báo cáo khoa học: "Statistical Machine Translation for Query Expansion in Answer Retrieval" pptx
Ngày tải lên :
08/03/2014, 02:21
... processing established investment development facilities institutional increase industry promote raise improve increase industry strengthen how to induce labour experience induction practice imagination ... Experimental Evaluation Our baseline answer retrieval system is modeled after the tfidf retrieval model of Jijkoun and de Rijke (2005) Their model calculates a linear combination of vector similarity scores ... defined in equation (4) we employed minimum error rate (MER) training under the BLEU measure (Och, 2003) Training data for MER training were taken from multiple manual English translations of Chinese...
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Báo cáo khoa học: "Word Sense Disambiguation Improves Information Retrieval" ppt
Ngày tải lên :
23/03/2014, 14:20
... Development in Information Retrieval, pages 250–256 J Lafferty and C Zhai 2001 Document language models, query models, and risk minimization for information retrieval In Proceedings of the 24th International ... Enhancing query translation with relevance feedback in translingual information retrieval Information Processing & Management, 47(1):1–17 281 S B Kim, H C Seo, and H C Rim 2004 Information retrieval ... Croft 1998 A language modeling approach to information retrieval In Proceedings of the 21st International ACM SIGIR Conference on Research and Development in Information Retrieval, pages 275–281...
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