Báo cáo khoa học: "Noun Phrase Chunking in Hebrew Influence of Lexical and Morphological Features" potx

... LinguisticsNoun Phrase Chunking in Hebrew Influence of Lexical and Morphological Features Yoav Goldberg and Meni Adler and Michael Elhadad Computer Science Department Ben Gurion University of the ... bracketing “[a] and [b]” instead of “[a and b]” and vice versa. Split errors: bracketing [a][b] instead of [a b] Merge errors: bracketing [a b] instead of [a][b] Short errors: bracketing “a ... be most effective in improving chunking results. Indeed, our experi-ments show that introducing morphological fea-tures improves chunking quality by as much as 3-point in F-measure when compared...

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

... help us by adding detail. Indeed, all possible phrases (or paraphrases) of actual content in a document are potentially valuable in indexing. In practice, of course, the indexing term space ... subset of phrases for indexing. Short phrases (often nominal compounds) are preferred over long complex phrases, because short phrases have bet- ter chances for matching short phrases in queries ... evaluation of the use of simple, yet robust and efficient noun -phrase analysis techniques to enhance phrase- based IR. In par- ticular, we explored an extension of the ~phrase- based indexing in...

Tài liệu Báo cáo khoa học: "Some Pragmatic Issues in the Planning of Definite and Indefinite Noun Phrases" potx

... Pragmatic Issues in the Planning of Definite and Indefinite Noun Phrases Douglas E. Appelt Artificial Intelligence Center, SRI International and Center for the Study of Language and Information ... University 1 Introduction In this paper we examine the pragmatic knowledge an utterance-planning system must have in order to produce certain kinds of definite and indefinite noun phrases. An ... of referring as a speech act and dismisses many uses of noun phrases as nonreferring. Such nonreferring noun phrases occur very frequently, and the considerations that underly their planning...

Báo cáo khoa học: "Noun-phrase co-occurrence statistics for semi-automatic semantic lexicon construction" ppt

... identified in Wordnet, which, as a set, should include the most common members of the category in question. In general, however, the strength of an algorithm of this sort is in identifying infrequent ... by changing the specifics of: what counts as co-occurrence; which figures of merit to use for new seed word selection and final ranking; the method of initial seed word selection; and how ... We defined co- occurrence in these constructions using the standard definitions of dominance and prece- dence. The relation is stipulated to be transi- tive, so that all head nouns in a list...

Tài liệu Báo cáo khoa học: RMI1 deﬁciency in mice protects from diet and genetic-induced obesity pptx

... component of the BLM helicase com-plex that maintains complex stability and aids in themaintenance of genome integrity. RMI1 is also knownto regulate the cell-cycle checkpoint machinery. In fact,400300350** ... high-fatdiet contains 32% safﬂower oil, 33.1% casein, 17.6%sucrose, 1.4% vitamin mixture, 9.8% mineral mixture, 5.6%cellulose powder and 0.5% dl-methionine. Casein, sucrose and the vitamin and mineral ... weeks) and after (15 weeks) obesity was observable.Interestingly, the RMI1 mRNA level increased signiﬁ-cantly in the liver and intra-abdominal fat of the obesephenotype mice; however, that in...

Tài liệu Báo cáo khoa học: An intermediate step in the evolution of ATPases – a hybrid F0–V0 rotor in a bacterial Na+ F1F0 ATP synthase pdf

... covalently linked hairpins in the membrane[10]. Importantly, the ion-binding site is not conserved in hairpin one. If one assumes the same number of transmembrane helices in V0 and F0, the rotor of eukaryal ... c ringwas disintegrated by treatment withtrichloroacetic acid (lanes 6, 8 and 9), and individual subunits were detected by silverstaining (lane 6) or immunoblotting using anantibody against ... hetero-oligomeric ring, we used laser-inducedFig. 2. High-resolution AFM topographs of reconstituted c rings.(A, B) Crystalline assemblies of c rings. Although the number of subunits forming the rings can...

Tài liệu Báo cáo khoa học: Enzymes for the NADPH-dependent reduction of dihydroxyacetone and D-glyceraldehyde and L-glyceraldehyde in the mould Hypocrea jecorina doc

... proceduresCloning and expression of the open readingframes for gld1 and gld2The gld1 gene was cloned from a cDNA library of theH. jecorina strain Rut C-30 [21] by PCR. The followingprimers, introducing ... The GLD1 pro-tein was tagged with a histidine tag at the N-terminalend by adding the coding sequence for six histidines tothe end of the open reading frame, and then expressed in S. cerevisiae. ... activity in crude yeastextract as the untagged protein, indicating that the tagwas not interfering with the protein activity. Thetagged protein was puriﬁed and then used for furtheranalysis.In...

Tài liệu Báo cáo khoa học: "Mining metalinguistic activity in corpora to create lexical resources using Information Extraction techniques: the MOP system" doc

... Mining metalinguistic activity in corpora to create lexical resources using Information Extraction techniques: the MOP system Carlos Rodríguez Penagos Language Engineering Group, Engineering ... rerendering of an expert ontology, since definitional contexts provide sortal information as a natural part of the process of precisely situating a term or concept against the meaning network of ... default information from a machine-readable dic-tionary. 3 Locating metalinguistic information in text: two approaches When implementingan IE application to mine metalinguistic information...

Tài liệu Báo cáo khoa học: "Reactive Content Selection in the Generation of Real-time Soccer Commentary" pdf

... maximizing the total gain of importance scores during a game can be used to incorporate content selection into the surface generation module, thus accounting for issues such as interruption and ... works, and §5 presents some actual output by MIKE and evaluates it in terms of efficiency of communication. 2 Principles of Content Selection in the Real Time Discourse 2.1 Maximization of Total ... RoboCup'97 quater-final we used in the previous section. The horizontal axis indicates time unit of 100msec and the vertical axis the importance score of the comment being uttered (taking into account...

Tài liệu Báo cáo khoa học: "MACHINE-READABLE COMPONENTS IN A VARIETY OF INFORMATION-SYSTEM APPLICATIONS" potx

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