Báo cáo khoa học: "Finding Salient Dates for Building Thematic Timelines" pot

... only this information to detect salient dates for the construction of event timelines.Other types of content are used for initial thematic document retrieval. Output is a list of dates, rankedfrom ... 730–739,Jeju, Republic of Korea, 8-14 July 2012.c2012 Association for Computational LinguisticsFinding Salient Dates for Building Thematic TimelinesR´emy KesslerLIMSI-CNRSOrsay, Francekessler@limsi.frXavier ... relative dates. However, absolute dates are relatively infrequent inour corpus (7%), so in order to broaden the cover-age for the detection of salient dates, we decided toconsider relative dates, ...

Báo cáo khoa học: "Finding Anchor Verbs for Biomedical IE Using Predicate-Argument Structures" potx

... describing target entities for IE, as their arguments. Thus verbs which take top-ical nouns can be candidates for anchor verbs. Ourmethod collects anchor verb candidates by choosingPASs whose ... discoveringenormous amount of new facts, and thus there isan increasing need for information extraction (IE)technology to support database building and to ﬁndnovel knowledge in online journals.To implement ... did not consider non-topical noun arguments for POS pattern method, whereas we consideredthem for PAS method. Thus decision on correctnessis stricter for PAS method.ResultsThe manual investigation...

Tài liệu Báo cáo khoa học: "An Integrated Environment for Computational Linguistics Experimentation" pot

... that the LinguaStream platformpromotes the combination of purely declarativeformalisms (when GATE is mostly based on theJAPE language and NOOJ focuses on a uniqueformalism), and allows processing ... analy-sis models and methodological concerns. Finally,when other platforms usually enforce the use of adedicated document format, LinguaStream is ableto process any XML document. On the other ... (they provide a formalrepresentation for a linguistic phenomenon) andoperative (they can be considered as instructionsto drive a computational process).Moreover, the platform takes advantage...

Tài liệu Báo cáo khoa học: "A rich environment for experimentation unification grammars" potx

... into discussion of the under- lying complexity, for which we unfortunately do not have space here, we give an exter- nal form of a lexical entry for some of the senses of the German verb traeumen. ... PATR-style languages is their lack of facilities for defining new abstractions and expressing linguistic generalisations not foreseen (or even foreseeable) by the language designer. This becomes ... subscripts. Three other special symbols are used: + stands for the unification operator * stands for top, the underdefined element. # stands for bottom, the overdefined element that corresponds...

Tài liệu Báo cáo khoa học: "A COMMON FRAMEWORK FOR ANALYSIS AND GENERATION" potx

... component describing their functional structure. For the rule for S, for instance, we add an element describing what the SUBJECT and PRED are for. We could say that the SUBJECT is the theme ... complete formal paraphrase of (1) must include at least as much information as we have given above. In particular, the logical structure of our para- phrases contains essential information ... consid- erable debate about the best way of representing this information. 2 GENERATION Suppose we have the formula given above as a for- mal paraphrase of (1), and we want to generate an English...

Báo cáo khoa học: "Advanced Online Learning for Natural Language Processing" pot

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Báo cáo khoa học: "Learning Expressive Models for Word Sense Disambiguation" pot

... customized for this monolingual task, the ILP approach signif-icantly outperforms the majority sense baseline and performs as well as the state-of-the-art system re-porting results for the same ... context. For example, among the possible senses of the verb “run” are “to move fast by using one's feet” and “to direct or control”. WSD can be useful for many applications, includ-ing information ... (Res-nik and Yarowsky, 1997). For example, in machine translation, WSD, or translation disambiguation, is responsible for identifying the correct translation for an ambiguous source word....

Báo cáo khoa học: "A STOCHASTIC PROCESS FOR WORD FREQUENCY DISTRIBUTIONS" pot

... (1975), have been put forward, all of which have Zipf's law as some special or limiting form. Unrelated to Zipf's law is the lognormal hypothesis, advanced for word frequency ... matrix 7 ) defines a uniform distribu- tion (all pi# equal), we immediately have that the expected neighborhood density for length rnl is identical for all targets Yt, while for length m~ > ... time avoiding full conditioning on two preced- ing segments, which, for four-letter words, would come uncomfortably close to building the prob- abilities of the individual words in the database...

Báo cáo khoa học: "Using Derivation Trees for Treebank Error Detection" potx

... andpoints on either side). See Dickinson and Meur-ers (2003b) for details. This work forms the basis for the DECCA system.12.2 Motivation for Our Approach(2) a. NPqmpsummitNP$rmSharmNPAl$yxthe ... SheikhNP#a3qmpsummit#b1S:1.2NPNP^$rmSharm#b2NPAl$yxThe Sheikh For (2a) For (2b) For (2c) A:1.1,left#b3NPAl$yxThe SheikhA:1.1,left#c3$rmSharmFigure 1: Etrees and Derivation Trees for (2abc).tree-substitution, sister-adjunction, ... to compare for inconsistent an-notation, and are computed separately for each in-stance of each nucleus from the full derivation treethat each instance is part of.5 For example, for comparing...

Báo cáo khoa học: "Incremental HMM Alignment for MT System Combination" pot

... the order of hypotheses.If hypothesis 2 is aligned before hypothesis 1, theﬁnal CN will not be good. Therefore, the obser-vation in Rosti et al. (2008) that different orderof hypotheses does ... align-ment of any of the hypotheses, no matter how goodthe alignments of other hypotheses are. For ex-ample, suppose we have the backbone “he buys acomputer” and two hypotheses “he bought a lap-top ... all hypotheses, it can be con-ceived as a list of the component translations. For example, the CN in Figure 2b can be convertedto the form in Figure 3. In such an expanded ortabular form,...

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