model of information retrieval system
Báo cáo khoa học: "Optimizing Language Model Information Retrieval System with Expectation Maximization Algorithm" doc
... Relating the new lan-guage models of information retrieval to the tradi-tional retrieval models: University of Twente [Host]; University of Twente, Centre for Telemat-ics and Information Technology, ... basis of research into Information Retrieval (IR). The pioneers in IR developed two models for ranking: the vector space model (G. Salton and M. J. McGill, 1986) and the probabilistic model ... output distribution of the state. Figure 1. HMM proposed in “A Hidden Markov Model Information Retrieval System To estimate the transition and observation probabilities of HMM, EM algorithm...
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Tài liệu Báo cáo khoa học: "A study of Information Retrieval weighting schemes for sentiment analysis" doc
... 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 idfin information ... docu-ments of only one or the other class and thereforedfi,j= 0 .3.3 SMART and BM25 tf.idf variantsThe SMART retrieval system by Salton (1971) isa retrieval system based on the vector space model (Salton ... al., 1996) is a probabilistic model for information retrieval and is one of themost popular and effective algorithms used in in-formation retrieval. For ease of reference, we in-corporate...
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Báo cáo khoa học: "Creative Language Retrieval: A Robust Hybrid of Information Retrieval and Linguistic Creativity" pot
... also contain the seeds of thiscreative language. Veale (2004) introduces the idea of creative information retrieval to explore how anIR system can itself provide a degree of creativeanticipation, ... introduced the notion of an ad-hoc category, a cross-cutting collection of oftendisparate elements that cohere in the context of aspecific task or goal. The ad-hoc nature of thesecategories ... usefulcombinations of ?, @ and ^ are described below:?? Neighbor -of- a-neighbor: if ?X matches anyelement of {X, X1, X2, …, Xn} then ??X matchesany of ?X ∪ ?X1 ∪ … ∪ ?Xn, where the ranking of Xij...
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Báo cáo khoa học: "The Role of Information Retrieval in Answering Complex Questions" ppt
... Agency.3 Document Retrieval Since information retrieval systems supply the ini-tial set of documents on which a question answer-ing system operates, it makes sense to optimizedocument retrieval performance ... LinguisticsThe Role of Information Retrieval in Answering Complex QuestionsJimmy LinCollege of Information StudiesDepartment of Computer ScienceInstitute for Advanced Computer StudiesUniversity of MarylandCollege ... does not occupy aprivileged position in the space of information ob-jects as the most ideal unit of retrieval. Indeed, forcertain types of information needs, sub-documentsegments are preferred—an...
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Towards a Model of Information Aesthetics in Information Visualization pdf
... influences, information visualization can allow for high-level interpretations of ever-more complex datasets. 33. Model of Information Aesthetics 3.1. Domain Model The unique characteristics of information ... proposes a model of information aesthetics in the context of information visualization. It addresses the need to acknowledge a recently emerging number of visualization projects that combine information ... the collective purpose of these two fields, an expanded model is required to describe its influencing factors. 3.2. Information Aesthetics Model The proposed model of information aesthetics...
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Báo cáo khoa học: "natural language information retrieval system DIALOG" potx
... Institute of Informatics PKIN, pok.850 00-901 Warszawa POLAND ~BSTRAe~ Presented paper contains a descrip- tion of an experimental version of the natural language information retrieval system ... DIALOG. The system is destined for the use in the field of medicine. Its main purpose is to ensure access to information to phlsiclans in a conver- sational manner. The use of the system does ... does not require ability of programming from its user. I Introduction The paper presents the state of elaboration of the natural language in- formation retrieval system DIALOG. Its aim is...
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Báo cáo khoa học: "Adaptation of Statistical Machine Translation Model for Cross-Lingual Information Retrieval in a Service Context" ppt
... met-ric in information retrieval. We’ll address the is-sue of the correlation between BLEU and MAP inSection 4.Both of the proposed approaches rely on thephrase-based SMT (PBMT) model (Koehn ... the PBMT model bytuning the model s weights on a parallel set of queries. This approach addresses the first as-pect of the problem, which is producing a “good”translation. The PBMT model combines ... types of features via a log-linear model. Thestandard features include (Koehn, 2010, Chapter5): language model, word penalty, distortion, dif-ferent translation models, etc. The weights of these...
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Developement of Multi-Agent system (MAS) model for Bac Lieu case study
... given needs the model helps the management of different sluices. The main potential input of multi-agent modelling is the representation of decision-making process. The bio-physical model does not ... related to the objective of the model. Some are related to the knowledge we introduced in the model. Some questions are related to the purpose and the use of the model. For instance, the ... the ability to recognize points of intervention and to construct a bank of options for resource management”. The role of modeling is formulated in this context: “Modeling proceeds iteratively...
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Tài liệu Báo cáo khoa học: "Kinds of Features for Chinese Opinionated Information Retrieval" pdf
... paper presents the results of experi-ments in which we tested different kinds of features for retrieval of Chinese opinionatedtexts. We assume that the task of retrieval of opinionated texts (OIR) ... of Opinionated Information Retrieval which is plannedto be a module in a Cross-Language Opinion Extrac-tion system (CLOE). The main goal of this system isto provide access to opinionated information ... the information retrieval (IR) paradigm which has also been used bysome researchers.Several sentiment information retrieval modelswere proposed in the framework of probabilistic lan-guage models...
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Tài liệu Báo cáo khoa học: "REPRESENTATION OF TEXTS FOR INFORMATION RETRIEVAL" pdf
... volume constraints typical of DR systems. The modi~,cations are designed to recognize such aspects of discourse structure as establishment of topic; "setting of context; summarizing; concept ... alternative systems for each of the pro- posed modifications. In this experiment the original corpus of thirty abstracts (but not the prublem state- ments) is submitted to all versions of the analysis ... 1979. Representation and classification of knowledge and information for use in interactive information re- trieval. In Human Aspects of Information Science. Oslo: Norwegian Library School. 148...
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Báo cáo khoa học: "Examining the Content Load of Part of Speech Blocks for Information Retrieval" pptx
... out-comes confirm that our hypotheses hold inthe context of Information Retrieval. 1 IntroductionThe task of an Information Retrieval (IR) system is to retrieve documents from a collection, in ... Computational LinguisticsExamining the Content Load of Part of Speech Blocks for Information Retrieval Christina LiomaDepartment of Computing ScienceUniversity of Glasgow17 Lilybank GardensScotland, ... resourcesfor information retrieval tasks. Natural language in-formation retrieval. Kluwer Academic PublishersDordrecht, NL.Bruce Croft and John Lafferty. 2003. Language Mod-eling for Information Retrieval. ...
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Báo cáo khoa học: "The Effect of Translation Quality in MT-Based Cross-Language Information Retrieval" pptx
... ECMT System The MT system used in this research is a rule-based ECMT system. The translation quality of this ECMT system is comparable to the best commercial ECMT systems. The basis of the system ... more and more MT systems are be-ing used in CLIR, it is of significance to care-fully analyze how the performance of MT system may influence the retrieval effectiveness. 3 System Description ... 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 (IRAL-2000),...
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Guide for Security-Focused Configuration Management of Information Systems potx
... System IS Information System ISA Information System Administrator ISC Information System Component ISO International Organization for Standardization ISO Information System Owner ISSO Information ... designated by the ISO) at the system level. Information System Security Officer (ISSO) The ISSO assists the information system owner with implementation of SecCM for the system, conducts configuration ... completed at the system level and typically covers the following topics: • Brief description of the subject information system; • Information system component inventory; • Information system configuration...
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Báo cáo khoa học: "What’s There to Talk About? A Multi-Modal Model of Referring Behavior in the Presence of Shared Visual Information" potx
... use of various forms of shared visual information in their every-day communication. The development of an integrated multi-modal model of referring behavior can improve the per-formance of ... evidence of a difference between the perform-ance of the visual-only model on the visual task conditions and the language-only model on the 12What’s There to Talk About? A Multi-Modal Model of ... variety of contexts that include visual objects of interest. Such systems may benefit from a data-driven model of how collaborative pairs adapt their language in the presence (or absence) of shared...
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