Báo cáo khoa học: "Beyond Projectivity: Multilingual Evaluation of Constraints and Measures on Non-Projective Structures" doc

... corre-sponding constraints and violate all preceding ones)4.2 Edge measures The ﬁrst two measures are based on two ways of partitioning the gap of a non-projective edge—intointervals and into components. ... are based on properties of individual non-projective edges (cf.Deﬁnition 3); and they take into account levels of nodes in dependency trees explicitly. None of the constraints and measures in ... Computational LinguisticsBeyond Projectivity: Multilingual Evaluation of Constraints and Measures on Non-Projective StructuresJiˇr´ı HavelkaInstitute of Formal and Applied LinguisticsCharles University...

Báo cáo khoa học: "Beyond NomBank: A Study of Implicit Arguments for Nominal Predicates" doc

... Màrquez, and Joakim Nivre. 2008. TheCoNLL 2008 shared task on joint parsing of syn-tactic and semantic dependencies. In CoNLL 2008:Proceedings of the Twelfth Conference on Computa-tional Natural ... identification model in Section 4. In Section5, we describe the evaluation setting and presentour experimental results. We analyze these resultsin Section 6 and conclude in Section 7.2 Related ... bootstrapmethod similar to the one described by Efron and Tibshirani (1993).6 Discussion6.1 Feature ablationWe conducted an ablation study to measure thecontribution of specific feature sets. Table...

Báo cáo khoa học: "Towards Web-Based Evaluation of Automatic Natural Language Phrase Generation" potx

... ap-plications and limitations of language generationhave been widely studied. Well known applica-tions of natural language generation can be foundin human-computer conversation (HCC) systems.One of ... the weekend ?, and so forth. The initialpopulation is formed by a number of phrases ran-domly selected between one and the total number of expressions in the database. No evaluation isperformed ... generation of the new phrase is given solelyby the mutation process explained below.3.3 MutationDuring the mutation process, each one of thephrases of the selected initial population is mu-tated...

Báo cáo khoa học: "Formalism-Independent Parser Evaluation with CCG and DepBank" pot

... of CCGbank.4 Dependency Conversion to DepBankFor the gold standard we chose the version of Dep-Bank reannotated by Briscoe and Carroll (2006),consisting of 700 sentences from Section 23 of ... running their con-version process on Section 23 of the Penn Treebank and evaluating the output against DepBank. As wellas providing some measure of the effectiveness of the conversion, this method ... we found that performing such a conver-sion is a time-consuming and non-trivial task.The contributions of this paper are as follows.First, we demonstrate the considerable difﬁcultiesassociated...

Tài liệu Báo cáo khoa học: Endovanilloids Putative endogenous ligands of transient receptor potential vanilloid 1 channels docx

... neuronal damage inanother animal model of excitotoxicity [78]. This suggeststhat anandamide-mediated activation of TRPV1 mightcontribute to neurotoxicity and neurodegeneration underconditions ... fromassay conditions and species differences to TRPV1 modi-fication and the ability of anandamide to reach theintracellular binding site on TRPV1.Thus, due to its low intrinsic efficacy, anandamide ... [10], and constriction of isolated bronchi and urinary bladder [15], albeit, in thesetwo assays N-arachidonoyldopamine is much less potent and efficacious than capsaicin. Species differences and pharmacodynamic...

Tài liệu Báo cáo khoa học: "Cross-Domain Co-Extraction of Sentiment and Topic Lexicons" pdf

... context of sentiment analysis. In Pro-ceedings of the 16th ACM conference on Conference on information and knowledge management, pages979–982, Lisbon, Portugal. ACM.Ivan Titov and Ryan McDonald. ... much attention in Natu-ral Language Processing (NLP) and Information Re-trieval (IR) (Pang and Lee, 2008; Liu, 2010). Senti-ment lexicon construction and topic lexicon extrac-tion are two ... on some selection criterion, and retrainthe classiﬁer. Many bootstrapping-based algorithmshave been proposed to information extraction and other NLP tasks (Blum and Mitchell, 1998; Riloffand...

Tài liệu Báo cáo khoa học: Unraveling the catalytic mechanism of lactoperoxidase and myeloperoxidase A reﬂection on some controversial features Elena Ghibaudi and Enzo Laurenti docx

... impurities in the preparation might be oxidized and thus contribute to additional consumption of H2O2.Inthe literature, there is good agreement on the fact that theconversion of native MPO into ... each of these questions, we will proposea new hypothesis that describes an integrated vision of thecatalytic mechanism of MPO and LPO.A brief survey of the absorption features of MPO, LPO and ... available on this problem comesessentially from two types of experiments: (a) titrations of the decay product of LPO Cpd I with ferrocyanide(a monoelectronic donor) and (b) kinetic studies on the...

Tài liệu Báo cáo khoa học: "Improved Smoothing for N-gram Language Models Based on Ordinary Counts" doc

... values of the α, β, and γ parame-ters depend on the context w1. wn−1. For eachcontext, the values of α, β, and γ must be set toproduce a normalized conditional probability dis-tribution. ... backoff”, or “pureinterpolation”. In pure backoff methods, all in-stances of α = 1 and all instances of β = 0. Thepure backoff methods we consider are Katz back-off and backoff absolute discounting, ... smoothing is an exception to this gener-alization, but since it has only interpolation parameters and Our new model provides additional degrees of freedom so the α and β interpolation parameterscan...

Tài liệu Báo cáo khoa học: "Finding Synonyms Using Automatic Word Alignment and Measures of Distributional Similarity" pdf

... Distributional Similarity Based on Syntactic RelationsThis section contains the description of the syn-onym extraction approach based on distributionalsimilarity and syntactic relations. Feature ... this section we will describe results from thetwo synonym extraction approaches based on dis-tributional similarity: one using syntactic context and one using translational context based on wordalignment ... the one hand and related words such as antonyms, (co)hyponyms,hypernyms etc. on the other hand.In this paper we have deﬁned context in a mul-tilingual setting. In particular, translations of...

Tài liệu Báo cáo khoa học: "A Lexicon for Exploring Color, Concept and Emotion Associations in Language" doc

... (Ortony et al., 1988).Given the importance of color and visual de-scriptions in conveying emotion, obtaining adeeper understanding of the associations betweencolors, concepts and emotions ... set of affect terms and concepts? What affect terms are strongly as-sociated with a certain concept or a category of concepts and is there any correlation with a se-mantic orientation of a concept?Finally, ... academic work on con-structing color-concept and color-emotion lexi-cons. The work most closely related to ourscollects concept-color (Mohammad, 2011c) and concept-emotion (EMOLEX) associations, bothrelying...

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