ontology based information retrieval model semantic web

Ngày tải lên: 05/07/2014, 06:31

... information re- trieval model, and further assumed that all re- trieved documents contained relevant opinions. (2) Doc: The 2-stage document -based opinion retrieval model was adopted. The model ... contextual information to express relevant opi- nion, and inter-sentence information to measure the degree of each word pair through a graph -based model in the following section. 3.2 HITS Model ... Opinion Retrieval Model In addition to conventional 2-stage approach, there has been some research on unified opinion retrieval models. Eguchi and Lavrenko proposed an opinion re- trieval model...

Ngày tải lên: 20/02/2014, 04:20

... "Natural Language Information Retrieval: TREC°5 Report." Proceedings of TREC-5 confer° ence. Strzalkowski, Tomek. 1995. "Natural Language Information Re- trieval" Information Processing ... easy combination of alternative retrieval methods, creating a meta- search strategy which maximizes the contribution of each stream. Different information retrieval systems can used as indexing ... to be a statement speci- fying the semantic criteria of relevance. This means that except for the semantic or conceptual resem- blance (which we cannot model very well as yet) much of the...

Ngày tải lên: 20/02/2014, 18:20

... 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, ... B. Croft, "A general language model for information retrieval, " 1999, pp. 316-321. G. Salton and M. J. McGill, Introduction to Modern Information Retrieval: McGraw-Hill, Inc. New York, ... 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 (S. E....

Ngày tải lên: 08/03/2014, 01:20

... has a stronger effect on retrieval effectiveness than the size of the rule base in MT -based CLIR. There- fore in order to improve the retrieval effective- ness of a MT -based CLIR application, ... translation resources for bilingual retrieval based on query translation: a bilingual machine-readable diction- ary, a statistical dictionary based on a parallel web corpus and the Babelfish MT ... 2.2 MT -Based Query Translation MT -based query translation is perhaps the most straightforward approach to CLIR. Compared with dictionary or corpus based methods, the advantage of MT-based...

Ngày tải lên: 17/03/2014, 04:20

... for physicians information sources change from printed media to web based systems [6, 8, 11]. An essential reason for the rapidly acceptance and distribution of the worldwide web (www) is the ... to digital records. A special web -based information source of the German Perinatal Registry does not exist. Therefore the Internet platform of the German Working Group for Information Technologies ... "cookies" (small amounts of information - 2 - Archives of Gynecology and Obstetrics DOI 10.1007/s00404-002-0365-9 Original Article Easy and effective - web -based information systems designed...

Ngày tải lên: 22/03/2014, 11:20

... 2 Argumentative Information in Meeting Information Retrieval Depending on the meeting browser type 1 , different levels of meeting content become accessible for information retrieval. Audio ... retrieving either topic -based or dialog act -based information. But this assumption is partially in- validated by our user query elicitation analysis, which showed that such information is only ... the information sought can be classified into two broad categories: argu- mentative information (about the argumentative process and the outcome of debate meetings), and non-argumentative information...

Ngày tải lên: 23/03/2014, 18:20

... are concepts of the ontology 4 Semantic tagging The purpose of the semantic tagging process is to an- notate words with domain-specific informations. In our case, domain-specific informations are ... developed is based on a multi-knowledge source modeled by a hidden Markov model. (N. Boufaden and al., 2001) showed that by using linguistic features modeled by a Hidden Markov Model, it is possible ... It is based on semantically tagging words and selecting the most relevant ones given the con- text. In this paper, we developed a semantic tag- ging approach that uses a domain-specific ontology, a...

Ngày tải lên: 23/03/2014, 19:20

... Embedding web -based statistical trans- lation models in cross-language information re- trieval. Computational Linguistiques, 29:381–419, September. Jian-yun Nie and Jiang Chen. 2002. Exploiting the web ... 2009) or the web (Nie and Chen, 2002; Hu et al., 2008). (Gao et al., 2006) proposes syntax -based translation models to deal with the disambiguation issues (NP -based, dependency -based) . The candidate ... fea- tures can be beneficial for the final retrieval qual- ity: the models with syntax features can outper- form the model basd on the moses features only. The syntax -based features leading to the most...

Ngày tải lên: 24/03/2014, 03:20

... Probabilistic relevance mod- els based on document and query generation. In Language Modeling for Information Retrieval, Kluwer International Series on Information Retrieval. Springer. Lavrenko, ... model- ing approach, one builds a language model from each document, and ranks documents based on the probability of the document model generating the query. The particulars of the language modeling approach ... Using coherence -based measures to predict query difficulty. In 30th European Conference on Information Retrieval (ECIR 2008), page 689694. Springer, Springer. Hiemstra, D. (2001). Using Language Models...

Ngày tải lên: 30/03/2014, 23:20

... information retrieval. In Proceedings of the RIA O 94 Conference. Hinrich Schutze and Jan 0. Pederson. 1997. A cooccurrence -based thesaurus and two applica- tions to information retrieval. Information ... Corpus -based Thesauri for Information Retrieval Rila Mandala, Takenobu Tokunaga and Hozumi Tanaka Abstract This paper proposes a method to over- come the drawbacks of WordNet when applied to information ... proposed the use of WordNet in informa- tion retrieval, they did not use WordNet in the query expansion framework. Our syntactic-relation -based thesaurus is based on the method proposed by Hindle...

Ngày tải lên: 31/03/2014, 21:20

... UML Models. 54 4.6 Feature Model Confi guration for Model Checking. 55 4.7 Mapping between Two Models Ma and Mb. 56 4.8 Feature Model Confi guration for Model Enrichment. 57 4.9 Ontology Modeling ... development, the semantic web community is keen on learn- ing what the benefi ts are of disciplines like metamodeling, domain - specifi c model- ing, and model transformation for the semantic web fi eld. ... map- pings ’ semantic model or semantic domain. For Harel and Rumpe [67] , the semantic defi nition of a language comprises a semantic domain and a semantic mapping from the syntax to the semantic...

Ngày tải lên: 24/04/2014, 16:05

Ngày tải lên: 03/06/2014, 02:00

Ngày tải lên: 22/06/2014, 19:20

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Ngày tải lên: 19/05/2015, 02:04

Ngày tải lên: 14/11/2012, 10:35

... Thống E-Tourism Ontology Transport OntologyHotel Ontology Tourism Service Ontology Agent Ontology Destination Ontology Event Ontology Message Ontology E - Tourism Ứng dụng trong agent khách sạn  Kết hợp Ontology ... Tourism IDBConnection  Từ file rdf chuyển sang csdl quan hệ file RDF ModelRDB CSDL  Lấy dữ liệu từ csdl ra để thao tác Dữ liệu CSDL ModelMaker OntModel OntModelSpec IDBConnection Quá trình ánh xạ E - Tourism Nghiệp ... Dung Xây dựng ontology khách sạn 1 Xây dựng ontology các dịch vụ du du lịch 2 Ánh xạ RDF sang csdl quan hệ 3 Ứng dụng xây dựng Agent Hotel 4 E - Tourism Kiến Trúc Hệ Thống E - Tourism Ánh xạ ontology...

Ngày tải lên: 16/01/2013, 17:02

... xây dựng các ứng dụng Semantic Web. Bao gồm các chương sau: Chương 1: Giới thiệu Semantic Web . Chương 2: Các ngôn ngữ Semantic Web . Chương 3: RDF- Nền tảng của Semantic Web . Chương 4: Truy ... Semantic Web còn cung cấp các phương tiện để thêm các thông tin chi tiết lên Web nhằm hỗ trợ sự tự động hóa cho các dịch vụ. 1.2.3 Kiến trúc Semantic Web 1.2.3.1 Giới thiệu : Semantic Web ... phục các yếu điểm của Web hiện tại khái niệm Semantic Web đã ra đời. Và khái niệm này đã được Tim Berners-Lee định nghĩa như sau: Semantic Web như một sự mở rộng của web hiện tại mà trong...

Ngày tải lên: 12/04/2013, 13:24