Báo cáo khoa học: "Social Network Extraction from Texts: A Thesis Proposal" doc

... overall goal of my thesis is to build a system that automatically extracts a social network from raw texts such as literary texts, emails, blogcomments and news articles. I take a “social net-work” ... toextract social networks from a wide range of textualdata. At the same time I will be able to empiricallyanalyze the types of linguistic patterns, both lexi-cal and syntactic, that perpetuate ... Empirical Meth-ods in Natural Language Processing.Apoorv Agarwal, Fadi Biadsy, and Kathleen Mckeown.2009. Contextual phrase-level polarity analysis using1I do not mention sentiment analysis anywhere...

Báo cáo khoa học: "Topical Keyphrase Extraction from Twitter" potx

... Social Media Analytics.Kalervo J¨arvelin and Jaana Kek¨al¨ainen. 2002. Cumu-lated gain-based evaluation of ir techniques. ACMTransactions on Information Systems, 20(4):422–446.John Lafferty ... keyphrase extrac-tion. Mihalcea and Tarau (2004) proposed to useTextRank, a modiﬁed PageRank algorithm to ex-tract keyphrases. Based on the study by Mihalceaand Tarau (2004), Liu et al. (2010) ... candidates with an average score less than1. The number of the remaining keyphrases for eachtopic ranges from 56 to 282.4.4 Evaluation MetricsTraditionally keyphrase extraction is evaluated...

Báo cáo khoa học: "Multilingual Term Extraction from Domain-speciﬁc Corpora Using Morphological Structure" pdf

... representative.2.5 Data visualisationThe results obtained are displayed as a weightedlist in HTML format. Such lists, also named “heatmaps” or “tag clouds” when they describe tags1usually represent ... corpora, in English and in French.2 Description of the method2.1 Extraction of wordsThe system takes as input a corpus of texts. Para-graphs written in another language than the targetlanguage ... units are rather con-stant in many European languages (Namer, 2005).Consequently, instead of relying on a subword dic-tionary to analyse compounds like (Schulz et al.,2002), our method makes...

Tài liệu Báo cáo khoa học: Aldehydes release zinc from proteins. A pathway from oxidative stress⁄lipid peroxidation to cellular functions of zinc pptx

... Kitagawa K, Matsuno K, Matsumoto A, Yoshida A, Nakayama K, Nakayama K & Kawa-moto T (2002) Diminished alcohol preference in trans-genic mice lacking aldehyde dehydrogenase activity.Pharmacogenetics ... Roman J, Gimenez A, Lluis JM, Gasso M, Rubio M,Caballeria J, Pares A, Rodes J & Fernandez-Checa JC(2000) Enhanced DNA binding and activation of tran-scription factors NF-kappa B and AP-1 ... dehydrogenase and ethanol wasadded, a signiﬁcant release of zinc was detected, withsaturation of Zinquin reaching 22% (Fig. 5B). Ethanolalone had a small but statistically signiﬁcant effect,while...

Tài liệu Báo cáo khoa học: "Acquiring Lexical Generalizations from Corpora: A Case Study for Diathesis Alternations" pdf

... which diathesis alternations are empirically attested in corpus data. Using the dative and bene- factive alternations as a test case we attempt to de- termine: (a) if some alternations are more ... acquire alternating verbs from large balanced corpora by using partial- parsing methods and taxonomic information, and discuss how corpus data can be used to quantify lin- guistic generalizations. ... Place, Edinburgh EH8 9LW, UK mlap@cogsci.ed.ac.uk Abstract This paper examines the extent to which verb diathesis alternations are empirically attested in corpus data. We automatically acquire...

Báo cáo khoa học: "Neural Network Probability Estimation for Broad Coverage Parsing" doc

... appropriate way.1 IntroductionMany statistical parsers (Ratnaparkhi, 1999;Collins, 1999; Charniak, 2001) are based on a history-based probability model (Black et al.,1993), where the probability ... structurallyspecified and linguistically appropriate biases onthe search for a good history representation. Theresulting parser achieves performance far greaterthan previous approaches to neural ... Neural Network Probability Estimationfor Broad Coverage ParsingJames HendersonDepartement d'InformatiqueUniversite de GeneveJames.Henderson@cui.unige.chAbstractWe present a neural -network- based...

Tài liệu Báo cáo khoa học: "Three BioNLP Tools Powered by a Biological Lexicon" doc

... automatically extracted verb subcategorization frames Yutaka Sasaki 1 Paul Thompson1 John McNaught 1, 2 Sophia Ananiadou1, 2 1 School of Computer Science, University of Manchester ... …”IL/NPIL-2/NN-BIOMED-/-2/CDmediated/VVDIL-2-mediated/UNKNOWNIL/NP2/CDIL-2/NN-BIOMEDＢｉｏＬｅｘｉｃｏｎmediated/VVDmediate/VVPmediate/VVof/INmediated/VVN-/--/-mediated/VVNdictionary-based taggingof/INFig. 3 BLTagger example coverage020406080100verbnounadjectiveadverbnominalizationadjetivial adverbalTerminologies Derivational relations ... BioLexicon accommodates both general English words and terminologies. Biomedical terms were gathered from existing biomedical databases. Detailed information regarding the sources of biomedical terms...

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

... anaphora in unrestricted texts. These kinds of anaphora are pronominal references, surface- count anaphora and one-anaphora. In order to solve these anaphors we work on the output of a part-of-speech ... accuracy. Our framework will allow us a similar approach to that of Kennedy and Boguraev (1996), but we will automatically get syntactic information from partial parsing. Moreover, our proposal ... will also be applied to other kinds of anaphors such as surface-count anaphora or one-anaphora. There are some other approaches that work on the output of a POS tagger, e.g. that of Mitkov and...

Báo cáo khoa học: "Cross Language Dependency Parsing using a Bilingual Lexicon∗" docx

... recent years. Typical domain adaptationtasks often assume annotated data in new domainabsent or insufﬁcient and a large scale unlabeleddata available. As unlabeled data are concerned,semi-supervised ... essentially different from that. As Chineseis basically a character-based written language.Character plays an important role in many means,most characters can be formed as single-characterwords, ... en-hance dependency parsing in a languageby using a translated treebank from an-other language. A simple statistical ma-chine translation method, word-by-worddecoding, where not a parallel...

Báo cáo khoa học: "Free Indexation: Combinatorial Analysis and A Compositional Algorithm*" doc

... Indexation: Combinatorial Analysis and A Compositional Algorithm* Sandiway Fong 545 Technology Square, Rm. NE43-810, MIT Artificial Intelligence Laboratory, Cambridge MA 02139 Internet: sandiway@ai.mit.edu ... course, a compositional algorithm can also be used in the non-interleaved case. Basically, the algorithm works by maintaining a set of indices at each sub-phrase of a parse tree. 5 Each index ... exhibit a provably optimal free indexation al- gorithm. 1 Introduction In the principles-and-parameters model of lan- guage, the principle known as 'free indexation' plays an important...

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