generalized vector space model in information retrieval
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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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: "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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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: "Homonymy and Polysemy in Information Retrieval" ppt
Ngày tải lên :
31/03/2014, 21:20
... of distinctions, and the type of distinctions required in information retrieval is an open question Finally, there are questions about how word senses should be used in a retrieval system In general, ... Sense Disambiguation and Information Retrieval" , in Proceedings of the Seventeenth A nnual International A CM SIGIR Conference on Research and Development in Information Retrieval, pp 142-151, ... Analyzing Language in Restricted Domains, LEA Press, 1986 Smeaton A and C J Van Rijsbergen, "Experiments on Incorporating Syntactic Processing of User Queries into a Document Retrieval Strategy", in...
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Báo cáo khoa học: "Adaptation of Statistical Machine Translation Model for Cross-Lingual Information Retrieval in a Service Context" ppt
Ngày tải lên :
24/03/2014, 03:20
... Machine Translation and Cross-lingual Information Retrieval In this context the reranking framework doesn’t only allow enriching the baseline translation model but also performing training using ... Evaluating effects of machine translation accuracy on cross-lingual patent retrieval In Proceedings of the 32nd international ACM SIGIR conference on Research and development in information retrieval, ... web log mining In Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval, SIGIR ’08, pages 749–750 ACM Amir Hossein Jadidinejad and...
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Tài liệu Báo cáo khoa học: "Phrase-Based Translation Model for Question Retrieval in Community Question Answer Archives" ppt
Ngày tải lên :
20/02/2014, 04:20
... translation models that account for translating single words in isolation, the phrase-based translation model is potentially more effective because it captures some contextual information in modeling ... the following contributions: • we formulate the question retrieval task as a phrase-based translation problem by modeling the contextual information (in Section 3.1) • we linearly combine the phrase-based ... phrase-based translation model for the question part and answer part (in Section 3.2) • we propose a linear ranking model framework for question retrieval in which different models are incorporated as...
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Báo cáo khoa học: "Optimizing Language Model Information Retrieval System with Expectation Maximization Algorithm" doc
Ngày tải lên :
08/03/2014, 01:20
... implementation information can be found in (C D Manning and H Schutze, 1999), which introduce HMM and the training procedure very well 3.4 Scoring the documents with EM-trained HMM model When the training ... integrate the bigram or trigram information into our training procedure Corpus information might be used in more delicate way to improve the performance J M Ponte and W B Croft, "A language modeling ... outside information It will be detailed introduced at Section Figure HMM proposed in “A Hidden Markov Model Information Retrieval System” We formulate the IR problem as follows: given a query string...
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Báo cáo khoa học: "The Role of Information Retrieval in Answering Complex Questions" ppt
Ngày tải lên :
08/03/2014, 02:21
... Document Retrieval Since information retrieval systems supply the initial set of documents on which a question answering system operates, it makes sense to optimize document retrieval performance in ... techniques introduced in this paper are applicable to the different types of information needs discussed above While information retrieval techniques form a strong baseline for answering relationship ... role of knowledge in conceptual retrieval: A study in the domain of clinical medicine In SIGIR 2006 J Lin and D Demner-Fushman 2006b Will pyramids built of nuggets topple over? In HLT/NAACL 2006...
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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: "Resolving Translation Ambiguity and Target Polysemy in Cross-Language Information Retrieval" potx
Ngày tải lên :
17/03/2014, 07:20
... of Chinese-English information retrieval on different models, we translate the 50 English queries into Chinese by human The topic 332 is considered as an example in the following The original ... U1WCO, which is the best in these experiments, gains 62.92% of monolingual information retrieval, and 40.80% increase to the do-nothing model (selectall) 221 Concluding R e m a r k s This paper ... "Finding What People Want: Experiences with the WebCrawler." Proceedings of WWW Salton, G and Buckley, C (1988) "Term Weighting Approaches in Automatic Text Retrieval. " Information Processing...
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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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Towards a Model of Information Aesthetics in Information Visualization pdf
Ngày tải lên :
23/03/2014, 13:20
... mapping are inversible That is, a user is able to infer underlying data values from the visual representation 3.2 Information Aesthetics Model The proposed model of information aesthetics is defined ... Visualization Art Information visualization, information aesthetics, and visualization art form a continuum between direct mapping with intrinsic focus, and interpretive mapping with extrinsic focus ... techniques facilitate both intrinsic insight into patterns and extrinsic meaning underlying the data Its mapping techniques are generally direct and accurate, similar to those in information visualization,...
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