Báo cáo khoa học: "Noun-Phrase Analysis in Unrestricted Text

Báo cáo khoa học: "Noun-Phrase Analysis in Unrestricted Text for Information Retrieval" pptx

... cision in an information retrieval system. The noun-phrase analysis techniques are also potentially useful for book indexing and automatic thesaurus extraction. 1 Introduction 1.1 Information ... Noun-Phrase Analysis in Unrestricted Text for Information Retrieval David A. Evans, Chengxiang Zhai Laboratory for Computational Linguistics Carnegie Mellon Univerist...

Ngày tải lên : 17/03/2014, 09:20

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Báo cáo khoa học: "Anaphor resolution in unrestricted texts with partial parsing" doc

... heuristics which employ information originated from morphosyntactic or shallow semantic analysis, e.g. in Baldwin (1997). These approaches, however, perform remarkably well. In Lappin and Leass (1994) ... Dept. Information Systems and Computation Valencia University of Technology lmoreno@dsic.upv.es Abstract In this paper we deal with several kinds of anaphora in unre...

Ngày tải lên : 08/03/2014, 05:21

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Báo cáo khoa học: " Contextual Analysis in Word-for-word MT" pot

... between structural context and meaning, and that the barest kind of routine comparison results in a high (although not absolute) degree of accuracy in the determination of meaning. Non-structural ... treatment of the pro- blem of inflected forms, for example, it is im- possible in the majority of instances to identify the grammatical case of Russian nouns. In addition to...

Ngày tải lên : 23/03/2014, 13:20

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Báo cáo khoa học: A simple in vivo assay for measuring the efﬁciency of gene length-dependent processes in yeast mRNA biogenesis doc

... time- consuming and not easy to carry out in a high number of samples. In addition, the information obtained by nuclear run-on shows the location of active polymerases, but it gives no information ... & Kokubo T (2001) Mutations in the TATA-binding pro- tein, affecting transcriptional activation, show synthetic lethality with the TAF145 gene lacking the TAF N-terminal domain in...

Ngày tải lên : 07/03/2014, 12:20

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Báo cáo khoa học: "Orthogonal Negation in Vector Spaces for Modelling Word-Meanings and Document Retrieval" ppt

... = 0}. For the purposes of modelling word-meanings, we might think of ‘orthogonal’ as a model for ‘com- pletely unrelated’ (having similarity score zero). This makes perfect sense for information ... 4. 3 Other forms of Negation in IR There have been rigourous studies of Boolean op- erators for information retrieval, including the p- norms of Salton et al. (1983) and the matrix f...

Ngày tải lên : 17/03/2014, 06:20

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Báo cáo khoa học: "Extracting a Representation from Text for Semantic Analysis" doc

... student’s understanding of that facet. Finally, we train a machine learning classi- fier on training data and use it to classify unseen test examples, assigning a Table 1 label for each reference ... this paper is on this fine-grained facet-based representation – considerations in defining it, the process of extracting it, and the benefit of using it. 2 Representing the Target Kno...

Ngày tải lên : 23/03/2014, 17:20

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Báo cáo khoa học: "Tree Representations in Probabilistic Models for Extended Named Entities Detection" ppt

... in the introduction and in section 2, since CRFs and models for parsing constitute the main issue in our work, we discuss some important models here. Beyond the models for parsing discussed in section ... de- scribed in (Charniak, 2000; Charniak et al., 1998) and (Collins, 1997), integrate more information than what is used in equations 4 and 5. Consider- ing a particular no...

Ngày tải lên : 24/03/2014, 03:20

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Báo cáo khoa học: "Exploiting Morphology in Turkish Named Entity Recognition System" pptx

... is assigned the value “root” for states containing a root and the value “morph” for states containing a morpheme. Since there are no preﬁxes in Turkish, a model trained with this feature will ... reasons for this. One can be that morphological information is not helpful in NER tasks. Morphemes in Turkish words are giving the necessary syntactic meaning to the word which may not...

Ngày tải lên : 30/03/2014, 21:20

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Tài liệu Báo cáo khoa học: Helicases ) feasible antimalarial drug target for Plasmodium falciparum pptx

... of NTP binding by blocking the NTP-binding site with NTP analogs may also be a possible way to inhibit the NTPase and subsequently the helicase activity (Fig. 1). This binding results in the ... by obstructing NTP binding, (iii) inhibits NTPase activity via an undeﬁned or allosteric mechanism, (iv) inhibits the coupling of NTP hydrolysis with the unwinding reaction, and (v) inhibits trans...

Ngày tải lên : 18/02/2014, 16:20

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Tài liệu Báo cáo khoa học: "Concise Integer Linear Programming Formulations for Dependency Parsing" pptx

... many important learning and inference problems including min-risk decod- ing, training globally normalized log-linear models, syntactic language modeling, and unsupervised learning via the EM algorithm ... many important learning and inference problems including min-risk decod- ing, training globally normalized log-linear models, syntactic language modeling, and unsupervised learning via...

Ngày tải lên : 20/02/2014, 07:20

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