ldap for crl retrieval
Tài liệu Báo cáo khoa học: "Phrase-Based Translation Model for Question Retrieval in Community Question Answer Archives" ppt
... outperforms the two baseline methods for question retrieval (row 13 and row 14 vs row 15) Conclusions and Future Work In this paper, we propose a novel phrase-based translation model for question retrieval ... determined for phrases than for words It is thus reasonable to expect that using such phrase translation probabilities as ranking features is likely to improve the question retrieval performance, ... 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 translation model for...
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Tài liệu Báo cáo khoa học: "REPRESENTATION OF TEXTS FOR INFORMATION RETRIEVAL" pdf
... and foregrounding devices (Figure 4) 148 Belkin, N.J., Brooks, H.M., and Oddy, R.N 1979 Representation and classification of knowledge and information for use in interactive information retrieval ... control for conceptual units, as opposed to conceptual relations Modify original definition of adjacency, which counted stop-list words, to one which ignores stoplist words This is to correct for ... overall structure Make the title the first and last sentence of the text, or overweight the score for each cO-OCcurrence containing a title word Concepts in the title are likely to be the most important...
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Báo cáo khoa học: "SMS based Interface for FAQ Retrieval" pot
... questions in a timely manner The information retrieval based system treat question answering as an information retrieval problem They search large corpus of text for specific text, phrases or paragraphs ... words with a high idf score The rationale for this stems from the fact that queries, in general, are composed of informative words Thus for example, for a given SMS token “byk”, idf of “bike” ... FAQ retrieval etc As highlighted earlier, these SMS-based FAQ retrieval services use human experts to answer questions There are other research and commercial systems which have been developed for...
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Báo cáo khoa học: "Examining the Content Load of Part of Speech Blocks for Information Retrieval" pptx
... resources for information retrieval tasks Natural language information retrieval Kluwer Academic Publishers Dordrecht, NL Bruce Croft and John Lafferty 2003 Language Modeling for Information Retrieval ... (iii) 10/5 with BB2 For the WT10G collection, the said ratio is (i) 10/5 for TF IDF; (ii) 20/5 for BM25 and DLH; and (iii) 5/5 for PL2 and BB2 We repeat our POS and POSC retrieval experiments ... Models for Information Retrieval based on Divergence from Randomness Ph.D Thesis, University of Glasgow Ingrid Zukerman and Bhavani Raskutti 2002 Lexical Query Paraphrasing for Document Retrieval...
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Báo cáo khoa học: "A Generalized Vector Space Model for Text Retrieval Based on Semantic Relatedness" pot
... an improvement in retrieval performance using a fully sense-based system Our approach differs from the aforementioned ones in that it expands the VSM model using the semantic information of a word ... documents from Financial Times, Los Angeles Times and the Foreign Broadcast Information Service For each TREC, we executed the standard base- For the evaluation of the proposed semantic relatedness ... Thus, for TREC in the y-axis we have depicted the difference in the interpolated precision values (%) of the GVSM from the VSM, for the first recall points For TRECs and we have done the same for...
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Báo cáo khoa học: "Noun-Phrase Analysis in Unrestricted Text for Information Retrieval" pptx
... weak interpretation is useful for tasks like information retrieval, document classification, and thesaurus extraction, and indeed forms the basis in the CLARIT system for automated thesaurus discovery ... parameters for statistics For example, one useful heuristic is that we should use a higher threshold of reliability (evidence) for accepting the pair [adjective, noun] as a lexical atom than for the ... general purpose high performance computer =~ general purpose [high=performance] computer =~ [general=purpose] [high=performance] computer =~ [general=purpose] [[high=performance]=computer] =~...
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Báo cáo khoa học: "Argumentative Feedback: A Linguistically-motivated Term Expansion for Information Retrieval" doc
... algorithms: A case study for detailed evaluation Journal of the American Society of Information Science, 47(1):70–84 K Sparck Jones 1971 Automatic Keyword Classification for Information Retrieval Butterworths ... Toward a Generic Approach Bioinformatics, G Salton and C Buckley 1990 Improving retrieval performance by relevance feedback Journal of the American Society for Information Science, 41(4) J Savoy ... developed for the TREC topic detection track, which is the most popular information retrieval collection for evaluating information search in library corpora Alternative collections (cf (Savoy,...
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Báo cáo khoa học: "Word or Phrase? Learning Which Unit to Stress for Information Retrieval∗" doc
... conventional retrieval models (e.g vector space model) The benefit of using phrases for improving the retrieval performance over simple ‘bag-of-words’ models was far less than expected; the overall performance ... hurt the retrieval performance when used) This indicates that without distinguishing effective phrases from ineffective phrases for retrieval, the model trained from one training set for phrase ... 0.1 0.2 0.3 0.4 0.5 0.1 0.2 0.3 0.4 0.5 lambda lambda Performance variation for the query ‘amazon rain forest’ Performance variation for the query ‘ declining birth rates’ 0.45 0.39 0.38 0.4...
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UNIT 5. DATABASE MANAGEMENT SYSTEMS LESSON 2. USING A DATABASE FOR DOCUMENT RETRIEVALNOTE pot
... self-contained unit of information Database management systems - Using a database for document retrieval - page Requirements for document retrieval The main requirements for browsing information can be ... for browsing information; • search requirements; and • user related requirements Requirements for document retrieval Regarding retrieval of document content, users should be able to: View information ... - Using a database for document retrieval - page Requirements for document delivery We can break requirements for document delivery into four main areas: • requirement for retrieval of the document...
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Báo cáo khoa học: "Complementing Word Net with Roget''''s and Corpus-based Thesauri for Information Retrieval" pdf
... file This information has been collected from the Wall Street Journal corpus and uses part of the corpus for training and the rest for testing Also, it has separate lists for such information as ... in the title section For our baseline, we used SMART version 11.0 (Salton, 1971) as information retrieval engine with the Inc.ltc weighting method SMART is an information retrieval engine based ... Information Retrieval, pages 160-169 of TREC-4 In Proceedings of The Fourth Text REtrieval Conference (TREC-4) NIST special publication Mark A Stairmand 1997 Textual context analysis for information...
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Báo cáo hóa học: " Research Article A Learning State-Space Model for Image Retrieval" pdf
... predict the best way to represent an image, for example, which type of features or which scale for image segmentation is better for image representation, before the user makes the query, we first collect ... the retrieval performances are bad at the beginning of the retrieval The reason is that only few positive feedbacks at the beginning are available, and hence the training data are insufficient for ... model) for bridging the semantic gap problem in image retrieval CONCLUSIONS AND FUTURE WORK This work demonstrates the feasibility of solving the problem of the semantic gap for image retrieval...
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Báo cáo hóa học: " Research Article An Ordinal Co-occurrence Matrix Framework for Texture Retrieval" doc
... (16) FOR all possible regions Ri in T Label pixels within region Ri FOR all subregions Sk in Ri i Determine representative subregion value V (Cik ) by majority decision ENDFOR FOR all Cik in Ri FOR ... except Ordcoocmult, have average retrieval accuracies for some classes lower than that 5.4 Comparison with other methods For comparison purposes, retrieval results for the Test database using different ... GOCMe0 (d, o) END ENDFOR ENDFOR Normalize GOCMee and GOCMe0 with ALL COOC Algorithm 1: Pseudocode for the Ordcooc method (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) FOR all possible regions...
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Efficient SatelliteBased Sensor Networks for Information Retrieval
... four performance macro areas It is the first step towards the formal definition of objective performance metrics 1) Information Loss: The importance of the Information Loss for EMSs is clear, for example, ... SENSOR NETWORKS FOR INFORMATION RETRIEVAL 465 Fig Example of EMS for weather prediction The assumption of this paper is that all sensors directly communicate with and send information to all ... SATELLITE-BASED SENSOR NETWORKS FOR INFORMATION RETRIEVAL 469 linked to the employed sink In the network in Fig 3, only the satellite backbone has been considered for the energy issue because the...
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Extraction of textual information from image for information retrieval
... textual information is for information retrieval The output of the extraction are passed to downstream retrieval applications First of all, I will make a very brief introduction about typical retrieval ... transformation, lines transform to lines, planes transform to planes, circles transform to circles, and ellipsoids transform to ellipsoids Euclidean transformation E has a form as: Background Knowledge ... proposed for language identification and fast retrieval This method is Affine invariant, and thus is robust to moderate perspective deformation, ii which is sufficient for this image type For real-scene...
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Tài liệu Báo cáo khoa học: "A Unified Graph Model for Sentence-based Opinion Retrieval" pdf
... concerned Therefore, we argue that existing information representation i.e bag-of-word, cannot satisfy the information needs for opinion retrieval In this paper, we propose to handle opinion retrieval ... Our Approach In traditional information retrieval (IR) bag-of-word representation is the most common way to express information needs However, in opinion retrieval, information need target at relevant ... of the comments to the document (Macdonald and Ounis, 2006) Therefore, in this paper we regard the information needs for opinion retrieval as relevant opinion Figure 1: A retrieved document di...
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Tài liệu Báo cáo khoa học: "A study of Information Retrieval weighting schemes for sentiment analysis" doc
... et al., 1996) is a probabilistic model for information retrieval and is one of the most popular and effective algorithms used in information retrieval For ease of reference, we incorporate the ... text retrieval Technical report, Ithaca, NY, USA Gerard Salton and Michael J McGill 1986 Introduction to Modern Information Retrieval McGrawHill, Inc., New York, NY, USA G Salton 1971 The SMART Retrieval ... other class and subtracting the two values Therefore, the weight of term 1388 Table 2: SMART notation for inverse document frequency variants For ease of reference we also include the BM25 idf...
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Tài liệu Báo cáo khoa học: "Archivus: A multimodal system for multimedia meeting browsing and retrieval" doc
... queries This is important for choosing the appropriate level of language processing, for instance for the syntactic analysis Another aspect is to see the types of actions performed using language ... conveyed to the system in the form of sets of semantic pairs A semantic pair (SP) is a qualified piece of information that the dia50 logue system is able to understand For example, a system could ... with pointing, e.g “next page” On the other hand, they can freely formulate queries relating to the information they are looking for, e.g “Did they decide to put a sofa in the lounge?” Commands...
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Tài liệu Báo cáo khoa học: "Kinds of Features for Chinese Opinionated Information Retrieval" pdf
... set of features for text classification (indexing) for an OIR query of the first level (finds opinionated information) and for an OIR query of the second level (finds opinionated information with ... by Nie et al (2000) for Chinese information retrieval, where the same combination of features (characters and words) also performed best The negation check increased the performance by 3% overall, ... and 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...
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Tài liệu Báo cáo khoa học: "NLP for Indexing and Retrieval of Captioned Photographs" pot
... that the system should be able to make Querying and Retrieval The same semantic representation mechanism is also used for retrieval; SOCIS allows for free text querying The system's interface prompts ... language retrieval of images based on descriptive captions ACM Transactions on Information Systems, 14(3):237-267 K Pastra, H Saggion, and Y Wilks 2002 Extracting Relational Facts for Indexing and Retrieval ... ANVIL: a System for Retrieval of Captioned Images using NLP Techniques In Proceedings of Challenge of Image Retrieval, Brighton, UK R Veltkamp and M Tanase 2000 Content-based image retrieval systems:...
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Báo cáo khoa học: "Statistical Machine Translation for Query Expansion in Answer Retrieval" pptx
... decrease retrieval performance compared to retrieval without expansion Conclusion We presented two techniques for query expansion in answer retrieval that are based on SMT technology Our method for ... results over baseline performance, but local expansion decreases performance by introducing irrelevant terms In (4) retrieval performance is improved over the baseline for both expansion tech470 ... decreased (-), or unchanged (0) retrieval performance compared to retrieval without expansion higher coverage This makes MRR less adequate for the low-recall setup of FAQ retrieval Table shows success...
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