Báo cáo khoa học: "Fast Semantic Extraction Using a Novel Neural Network Architecture" docx

... is labeled foreach particular verb as so-called frames. Addition-ally, semantic roles can also be labeled with one of13 ARGM adjunct labels, such as ARGM-LOC orARGM-TMP for additional locational ... locational or temporalinformation relative to some verb.Shallow semantic parsing has immediate applica-tions in tasks such as meta-data extraction (e.g. fromweb documents) and question and answer ... solutions are compli-cated, consist of several stages and hand-built features, and are too slow to be appliedas part of real applications that require such semantic labels, partly because of...

Báo cáo khoa học: "Accurate Collocation Extraction Using a Multilingual Parser" docx

... Spanish and Italian (sec-tion 3). Then we present in sections 4 and 5 a com-parative evaluation experiment proving that a hy-brid approach leads to more accurate results than a classical approach ... speakers.1.b) play role: What role can Canada’simmigration program play in help-ing developing nations ?1.c) make mistake: We could look backand probably see a lot of mistakesthat all parties including ... doneat the end of the extraction process, but separatelyfor each stage: after the candidate selection stage,for evaluating the quality (in terms of grammati-cality) of candidates proposed; and...

Báo cáo khoa học: "Contextualizing Semantic Representations Using Syntactically Enriched Vector Models" ppt

... evaluatedagainst a gold standard containing up to 10 possibleparaphrases for each of the individual instances.There are two natural subtasks in generatingparaphrases: identifying paraphrase ... Experiments: Ranking ParaphrasesIn this section, we evaluate our model on a para-phrase ranking task. We consider sentences withan occurrence of some target wordwand a list ofparaphrase candidatesw1, ... use948of syntax increases dimensionality and thus maycause data sparseness (Padó and Lapata, 2007).Second, the vectors of two syntactically relatedwords, e.g., a target verb acquire and its direct...

Báo cáo khoa học: "Chinese Term Extraction Using Different Types of Relevance" potx

... a good authority is a term candidate that is contained in many good hubs. In TV_HITS, a node p can either be a sentence or a term candidate. If a term candidate TC is contained in a sentence ... relevance between term candidates are iteratively calculated by graphs using link analysis algorithm to avoid the dependency on prior domain knowledge. The rest of the paper is organized as ... measures (Kageura and Umino, 1996) to validate their domain specificity. Many previous studies are conducted on term candidate extraction. Other tasks such as named entity recognition, meaningful...

Báo cáo khoa học: "Synonymous Collocation Extraction Using Translation Information" ppt

... second language. The translations of the candidates are obtained with a statistical translation model which is trained with a small bilingual corpus and a large monolingual corpus. The translation ... language. Each translation of the candidates is assigned a probability with a statistical translation model that is trained with a small bilingual corpus and a large monolingual corpus. The similarity ... obtain candidates of synony-mous collocation pairs based on a monolingual corpus and a word thesaurus. We then select those appropriate candidates using their translations in a second language....

Báo cáo khoa học: "Open Information Extraction using Wikipedia" pdf

... text and searchqueries into factual knowledge: Hierarchical classattribute extraction. In AAAI.Fuchun Peng and Andrew McCallum. 2004. AccurateInformation Extraction from Research Papers using Conditional ... thecorePath into a tree by adding all adverbial andadjectival modiﬁers as well as dependencies like“neg” and “auxpass”. We call the result an ex-pandPath as shown below:WOE traverses the expandPath ... Wikipedia articleswill potentially increase the size of matched sen-tences at a cost of accuracy. Also, their learnedextractors are relation-speciﬁc. Alan Akbik etal. (Akbik and Broß, 2009) annotated...

Tài liệu Báo cáo khoa học: "Ensemble Document Clustering Using Weighted Hypergraph Generated by NMF" docx

... NMFHiroyuki Shinnou, Minoru SasakiIbaraki University,4-12-1 Nakanarusawa, Hitachi,Ibaraki, Japan 316-8511shinnou,msasaki @mx.ibaraki.ac.jpAbstractIn this paper, we propose a new ensembledocument ... al.,1999)(Deerwester et al., 1990). Dimensional reduc-tion maps data in a high-dimensional space into a low-dimensional space, and improves both cluster-ing accuracy and speed.NMF is a dimensional reduction ... and integratesthem witha weighted hypergraph instead ofthe stan-dard hypergraph (Strehl and Ghosh, 2002). An ad-vantage of our method is that the weighted hyper-graph can be directly obtained...

Báo cáo khoa học: "Learning Semantic Links from a Corpus of Parallel Temporal and Causal Relations" doc

... semantic features.All+Tmp (Causals Only) Syntactic and semantic features, plus the gold-standard temporal label.We compared our models against several baselines, using precision, recall and F-measure ... following baselines:BEFORE Classify all instances as BEFORE, the ma-jority class label for temporals.CAUSAL Classify all instances as CAUSAL.1stEvent Use a lookup table of 1stwords and thelabels ... tem-porals (81.2%) and moderate agreement on causals(77.8%). We also report F-measure agreement, sinceBEFORE, AFTER and CAUSAL relations are more in-teresting than NO-REL. Annotators had F-measureagreement...

Báo cáo khoa học: "Finding Word Substitutions Using a Distributional Similarity Baseline and Immediate Context Overlap" potx

... distributional similarity baseline (a sub-set of Wikipedia) in an attempt to show that a good semantic parse and adequate ﬁltering can providereasonable performance even on domains wheredata is sparse. ... thehead ‘rescue’,lemma:rescue arg:ARG2 var:bankwhich indicates that ‘bank’ is object of the head‘rescue’, andlemma:failing arg:ARG1 var:bankwhich indicates that the argument of ‘failing’ ... work and thelast two quoted papers is that we add a new layerof veriﬁcation: we extract pairs of verbs using au-tomatically derived semantic patterns, perform a ﬁrst stage of ﬁltering using...

Báo cáo khoa học: "Extracting Semantic Roles from a Model of Eventualities" pot

... representation of Max embarque la caisse sur le cargo [3J/Max em- barks the crate on the cargo boat can be analyzed in two steps. First there is a transition from an initial state IS where ... cargo~the crate was embarked on the cargo boat, and is schematized in (2). One of the argument (cargo boat) is used as a localization while the other argument is used as a localized entity (crate), ... the crate is not on the cargo boat to a final state FS where the crate is on the cargo boat. The final state can be expressed by the static passive, la caisse est embarqude sur le cargo~the...

Xem thêm