Báo cáo khoa học: "Clique-Based Clustering for improving Named Entity Recognition systems" pot

... 51–59,Athens, Greece, 30 March – 3 April 2009.c2009 Association for Computational LinguisticsClique-Based Clustering for improving Named Entity Recognition systemsJulien Ah-PineXerox Research Centre ... IntroductionIn Information Extraction domain, named entities(NEs) are one of the most important textual unitsas they express an important part of the meaningof a document. Named entity recognition ... processing. For instance the NE Oxford illus-trates the different ambiguity types that are inter-esting to address:• intra-annotation ambiguity: Wikipedia listsmore than 25 cities named Oxford in...

Báo cáo khoa học: "A Framework for Unifying Named Entity Recognition and Disambiguation Extraction Tools" pot

... Association for Computational Linguistics, pages 73–76,Avignon, France, April 23 - 27 2012.c2012 Association for Computational LinguisticsNERD: A Framework for Unifying Named Entity Recognition and ... schemas of the Named Entity categories. Concepts included inthe NERD ontology are collected from differentschema types: ontology (for DBpedia Spotlightand Zemanta), lightweight taxonomy (for Alche-myAPI, ... structure from thosefree texts. They provide algorithms for analyz-ing atomic information elements which occur in asentence and identify Named Entity (NE) such asname of people or organizations,...

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

... structures, thereforeusing only word forms is not enough for manycomputational tasks. In this paper we an-alyze the effect of morphology in a Named Entity Recognition system for Turkish. Westart ... information extraction isthe Named Entity Recognition (NER) which aims tolocate and classify the named entities of an unstruc-tured text. State-of-the-art NER systems have beenproduced for ... 105–110,Portland, OR, USA 19-24 June 2011.c2011 Association for Computational LinguisticsExploiting Morphology in Turkish Named Entity Recognition SystemReyyan Yeniterzi∗Language Technologies...

Báo cáo khoa học: " New Models for Improving Supertag Disambiguation" pdf

... Proceedings of EACL '99 New Models for Improving Supertag Disambiguation John Chen* Department of Computer and Information Sciences University of Delaware Newark, DE ... applications. Grishman (1995) and Hobbs et al. (1995) use phrasal information in information extraction. Alshawi (1996) uses dependency information in a machine translation system. The need to impose ... supertagging may be employed in informa- tion retrieval. Furthermore, given a sentence aligned parallel corpus of two languages and al- most parse information for the sentences of one of the...

Báo cáo khoa học: "Phrase Clustering for Discriminative Learning" pptx

... number of iterations to be 50. 3 Named Entity Recognition Named entity recognition (NER) is one of the first steps in many applications of information extraction, information retrieval, question ... experimental results from two distinct application domains: named entity recognition and query classification. Our named entity recognition system achieves an F1-score of 90.90 on the CoNLL ... be very useful. In different applications we need different types of clusters. For example, in the named entity recognition task, categorical clusters are more successful, whereas in query...

Báo cáo khoa học: Therapeutic approaches for prion and Alzheimer’s diseases pot

... inherited forms ofCJD are the result of a point mutation in PrPCthatincreases the propensity for it to assume an abnormalconformation. Virtually all genetic defects implicatedin familial forms ... depending on classand isoform) and the potential for inducing serum sick-ness with resultant complications such as renal failureor lymphomas. Nevertheless, clinical trials for passiveimmunization ... ⁄ or can promote formation of neuro-ﬁbrillary tangles [7]. Both ﬁbrillar Ab and PrPScarecapable of forming amyloid deposits. The presence ofamyloid deposits is necessary for making the diagnosisof...

Báo cáo khoa học: "Automatic Compensation for Parser Figure-of-Merit Flaws*" pot

... parses for the same substring, before it would generate even one parse for another area. The reason for that is that the figures of independent merit are frequently good as relative measures for ... of merit for ordering the agenda, and ultimately rec- ommends one that reduces the number of edges required for a full parse into the thou- sands. (Goldwater et al., 1998) (henceforth [Gold98]) ... per- forms better if it runs slightly past the first parse; so for every run referenced in this paper, the parser was allowed to run to first parse plus a tenth. All reported final counts for...

Báo cáo khoa học: "Automatic Annotation for All Semantic Layers in FrameNet" potx

... part-of-speech-speciﬁc layer, which con-tains aspectual information for verbs; andcopulas, support expressions, and slot ﬁllinginformation for nouns and adjectives.• The “Other” layer, containing ... (Baker et al., 1998) or PropBank for- malisms, have proven useful in a number of NLPprojects, such as information extraction and ques-tion answering. The main reason for their popular-ity is that ... the classical approach for FE identiﬁca-tion, that is classiﬁcation of nodes in the parse tree,is as well a viable method for detection of otherkinds of semantic information. The detection...

Báo cáo khoa học: "Minimized Models for Unsupervised Part-of-Speech Tagging" pot

... AFNLPMinimized Models for Unsupervised Part-of-Speech TaggingSujith Ravi and Kevin KnightUniversity of Southern CaliforniaInformation Sciences InstituteMarina del Rey, California 90292{sravi,knight}@isi.eduAbstractWe ... new possibilities for future research. For direct comparison to previous works, we also pre-sented results for the case when the dictionariesare incomplete and ﬁnd the performance of oursystem ... dictionary & grammar)e.g., L0≤ d1L1≤ g1IP formulationtraining textlink variablesFigure 2: Integer Programming formulation for ﬁnding the smallest grammar that explains a given...

Báo cáo khoa học: " a Tool for Teaching by Viewing Computational Linguistics" potx

... packagessuch as GATE (http://gate.ac.uk) andNLTK (http://nltk.sourceforge.net/index.html). Detailed information about vi-sual tools for NLP, in particular about GATE, isto be found in (Gaizauskas ... computational lexicons module - for linguists,• the question modeling module - for computerscientists,• the Hidden-Markov-Models (HMM) moduleand Topic-Focus module - for both computerscientists ... not only for thelessons, but also for the term dictionary associated to eachmodule.2XML = Extensible Markup Language. More details tobe found on http://en.wikipedia.org/wiki/XML3 For the...

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