Báo cáo khoa học: "A Bayesian Approach to Unsupervised Semantic Role Induction" docx

... Computational LinguisticsA Bayesian Approach to Unsupervised Semantic Role InductionIvan Titov Alexandre KlementievSaarland UniversitySaarbr¨ucken, Germany{titov|aklement}@mmci.uni-saarland.deAbstractWe ... corresponds to a semantic role. If an argument key k is assigned to a role r (k ∈ r), all of its occurrences are la-beled r.Our Bayesian model encodes two common as-sumptions about semantic roles. ... of tables to restaurant customers. Assume a restaurant with asequence of tables, and customers who walk intothe restaurant one at a time and choose a table to join. The ﬁrst customer to enter...

Báo cáo khoa học: "A Bootstrapping Approach to Unsupervised Detection of Cue Phrase Variants" docx

... inbootstrapping to evaluate the quality of the pat-terns automatically. IE and QA approaches, due to uniqueness assumptions of the real-world rela-tions that these methods search for, have an auto-matic ... according to their dis-tributional similarity to the nouns “method” and“model”. Subsequently, the noun “method” is used to ﬁnd transitive verbs and rank them according to their similarity to “introduce” ... semantics of the cue phrase (e.g. “de-velop” and approach ) and ﬁlters irrelevant termsthat change the phrase semantics (e.g. “need” and“example”).Stopping at this point would limit us to...

Báo cáo khoa học: "A CCG APPROACH TO FREE WORD ORDER LANGUAGES" docx

... formalism to handle free word order in Finnish, in which noun phrases are functors that ap- ply to the verbal basic elements. Our approach treats case-marked noun phrases as functors as well; ... play an essential role in this analysis. AN OVERVIEW OF CCGs In CCGs, grammatical categories are of two types: curried functors and basic categories to which the functors can apply. A category ... set of syntactic and semantic features. A short set of combinatory rules serve to combine these categories while preserving a transparent rela- tion between syntax and semantics. The application...

Báo cáo khoa học: "A Bayesian Model for Unsupervised Semantic Parsing" ppt

... stages. Similarly to core semantic roles in FrameNet, semantic roles aretreated as frame-speciﬁc in our model, as our modeldoes not try to discover any correspondences be-tween roles in different ... 2003).The aim of the semantic role labeling task is to identify all of the frames evoked in a sentence andlabel their semantic role ﬁllers. We extend this taskand treat semantic parsing as recursive ... Association for Computational LinguisticsA Bayesian Model for Unsupervised Semantic ParsingIvan TitovSaarland UniversitySaarbruecken, Germanytitov@mmci.uni-saarland.deAlexandre KlementievJohns...

Tài liệu Báo cáo khoa học: "A Bootstrapping Approach to Named Entity Classification Using Successive Learners" pdf

... seeds are retrieved from the repository to train a decision list for NE classification. 3. The learned rules are applied to the NE candidates stored in the repository. 4. The proper names tagged ... 86.7% To benchmark the quality of the automatically constructed corpus (Table 2), the testing corpus is first processed by our parser and then saved into the repository. The repository level ... paper presents a new bootstrapping approach to named entity (NE) classification. This approach only requires a few common noun/pronoun seeds that correspond to the concept for the target NE...

Tài liệu Báo cáo khoa học: "A PRAGMATICBASED APPROACH TO UNDERSTANDING" pdf

... such ques- tions implicitly by proceding to answer the ques- tion or to seek information relevant to formulat- ing an answer. However IS may refuse to accept the question posed by IP because ... pushed onto the discourse stack. [SP2]When IS poses a question to IP, Expand- Question is pushed onto the discourse stack. Once IP begins answering the question, the stack is popped up to and ... goal rule DG-Obtaln-Info to deter- mine if the elliptical fragment is being used to accomplish the discourse goal of seeking information in order to construct an answer to the posed question....

Tài liệu Báo cáo khoa học: "A HYBRID APPROACH TO REPRESENTATION IN THE JANUS NATURAL LANGUAGE PROCESSOR" pot

... a role R from the class associated with A to the class associated with B. If no such role exists, the search is for a role relating the nearest ancestor of the class of A to any ancestor ... (ancestors) of a concept are com- piled and stored when the taxonomy is loaded. All roles from one concept to another are also pre- compiled and stored, maintaining the distinction be- tween roles ... walks up the ancestor chain(s) only to find the closest applicable role. Thus, in many cases, " ;semantic reasoning" is reduced to efficient table lookup. 4.1.3. Relation to Underlying...

Tài liệu Báo cáo khoa học: "A PROBABILISTIC APPROACH TO GRAMMATICAL ANALYSIS OF WRITTEN ENGLISH BY COMPUTER" pot

... subsequent modification to the system resulted in over 96 per cent of word tags being correctly assigned automatically. The remaining 3 to ~ per cent were corrected by human post-editors. ~brk is ... programs was devised to automatically produce a single level of grammatical description with one word tag representing the word class or part of speech of each word token in the corpus. Error ... post-editors. ~brk is now in progress to devise a suite of programs to provide a constituent analysis of the sentences in the corpus. So far, sample sentences have been automatically assigned phrase...

Báo cáo khoa học: A kinetic approach to the dependence of dissimilatory metal reduction by Shewanella oneidensis MR-1 on the outer membrane cytochromes c OmcA and OmcB potx

... these cytochromes have been proposed to be ter-minal Fe(III) and Mn(IV) reductases, although their role in the reductionof other metals is less well understood. To obtain more insight into this,we ... Journal compilation ª 2007 FEBSA kinetic approach to the dependence of dissimilatorymetal reduction by Shewanella oneidensis MR-1 on theouter membrane cytochromes c OmcA and OmcBJimmy Borloo*, ... in MR-1 isthought to be composed of cytochromes and a qui-none, located in both the cytoplasmic membrane(CymA and menaquinone) and the outer membrane(OmcB, and a partial role for OmcA) [4,9–11]....

Báo cáo khoa học: "A new Approach to Improving Multilingual Summarization using a Genetic Algorithm" pptx

... op-eration.3http://www.extractor.com/928Today, graph-based text representations are be-coming increasingly popular, due to their abil-ity to enrich the document model with syntacticand semantic relations. Salton ... weighted average of two “parent” vectorsaccording to (Vignaux and Michalewicz, 1991).Formally, a new vector v will be created fromtwo vectors v1and v2according to the formulav = λ ∗ v1+ (1 ... 1997;Satoshi et al., 2001) and length-based (Satoshi etal., 2001).Considered the ﬁrst work on sentence scoringfor automated text summarization, Luhn (1958)based the signiﬁcance factor of...

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