Báo cáo khoa học: "Comparative News Summarization Using Linear Programming" ppt

... News Summarization The task of comparative news summarization is tobrieﬂy sum up the commonalities and differencesbetween two comparable news topics by using human readable sentences. The summarization system ... xiaojianguo}@icst.pku.edu.cnAbstractComparative News Summarization aims tohighlight the commonalities and differencesbetween two comparable news topics. Inthis study, we propose a novel approach togenerating comparative news summaries. ... problem isaddressed by using a linear programmingmodel. The experimental results demonstratethe effectiveness of our proposed model.1 IntroductionComparative News Summarization aims to highlightthe...

Báo cáo khoa học: "Multi-Document Summarization using Sentence-based Topic Models" docx

... all of the sentence scoresare computed using various heuristics as few re-search efforts have been reported on using genera-tive models for document summarization. In this paper, to address ... Randomly initialize U and V, and normalize them2: repeat3: Update U using Eq. (3);4: Update V using Eq. (4);5: Computef using Eq. (2);6: untilf converges.3.2 Algorithm ProcedureThe ... theeffectiveness of the proposed model forthe multi-document summarization task.1 IntroductionWith the continuing growth of online textresources, document summarization has foundwide-ranging applications...

Báo cáo khoa học: "Query-Relevant Summarization using FAQs" ppt

... of the FAQ relative tothat question.ﬁnddef1.2 Using FAQ data for summarization We have proposed using statistical learning to con-struct a summarization system, but have not yet dis-cussed ... collection. Many studies on text summarization have focused on the task of summariz-ing newswire text, but there is no obvious way to use news articles for query-relevant summarization withinour proposed ... approach to summarization. 2 A probabilistic model of summarization Given a query and document , the query-relevant summarization task is to ﬁndthe a posteriori most probable summary for . Using Bayes’...

Tài liệu Báo cáo khoa học: "Identifying Text Polarity Using Random Walks" pptx

... achieves better performance by only using WordNet synonym, hypernym and similar to rela-tions. Adding co-occurrence statistics slightly im-proved performance, while using glosses did nothelp at ... handful of seeds is used to deﬁne thetwo polarity classes. The method is exper-imentally tested using a manually labeledset of positive and negative words. It out-performs the state of the art ... respond to othermessages. Threaded discussions include e-mails,e-mail lists, bulletin boards, newsgroups, or Inter-net forums. Threaded discussions act as a very im-portant tool for communication...

Tài liệu Báo cáo khoa học: "Generating research websites using summarisation techniques" pptx

... 5–8,Columbus, June 2008.c2008 Association for Computational LinguisticsGenerating research websites using summarisation techniquesAdvaith Siddharthan & Ann CopestakeNatural Language and Information ... stylesheets are often considered inappropriatefor diverse organisations.Research summary pages using stylesheets canoffer alternative methods of information access andbrowsing, aiding navigation ... forall papers in publication pages (due to copyright andother issues). The titles are then parsed using theRASP parser (Briscoe and Carroll, 2002) and key-phrases are extracted by pattern matching....

Tài liệu Báo cáo khoa học: "Unsupervised Relation Disambiguation Using Spectral Clustering" ppt

... The clustering result using K-means; (c) Threeelongated clusters in the 2D clustering space using Spectral clustering: two dominant eigenvectors; (d)The clustering result using Spectral-based ... isevaluated on ACE 2003 corpus, which contains 519ﬁles from sources including broadcast, newswire,and newspaper. We only deal with intra-sentenceexplicit relations and assumed that all entities ... July 2006.c2006 Association for Computational LinguisticsUnsupervised Relation Disambiguation Using Spectral ClusteringJinxiu Chen1Donghong Ji1Chew Lim Tan2Zhengyu Niu11Institute for...

Báo cáo khoa học: "Entity Set Expansion using Topic information" ppt

... false-positive examples and is ineffi-cient. We solve these three problems by using topicinformation.3 Set expansion using Topic information3.1 Basic bootstrapping methodsIn this section, we ... withIREX 8 Named Entity types by CRFs using Mini-mum Classification Error rate (Suzuki et al., 2006),and transformed into features. The context featureswere defined using the template “(head) entity ... are regarded as using global information, how-ever, the space of word features are sparse, even ifthe amount of data available is large. Our approachcan avoid this problem by using topic models...

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

... Synonymous Collocation Extraction Using Translation Information Hua WU, Ming ZHOU Microsoft Research Asia 5F Sigma Center, No.49 ... monolingual corpus and a word thesaurus, and then selects the ap-propriate pairs from the candidates using their translations in a second language. The translations of the candidates are obtained ... paper addresses the problem of automatically extracting English synonymous collocation pairs using translation information. A synonymous col-location pair includes two collocations which are...

Báo cáo khoa học: "Multi-Document Summarization of Evaluative Text" pptx

... (e.g., a prod-uct). In contrast, most previous work on multi-document summarization has focused on factualtext (e.g., news (McKeown et al., 2002), biogra-phies (Zhou et al., 2004)). For factual ... of ud fi.3 MEAD*: Sentence ExtractionMost modern summarization systems use sen-tences extracted from the source text as the ba-sis for summarization (see (Nat, 2005b) for a rep-resentative ... Multi-Document Summarization of Evaluative TextGiuseppe Carenini, Raymond Ng, and Adam PaulsDeptartment of Computer...

Báo cáo khoa học: "Heuristic Cube Pruning in Linear Time" pptx

... as-sumption that one of the two lists has constant slope. Using the fact that the merge of two lists as in (2) canbe computed in time linear in the size of the outputlist, it is not difficult ... 239k sentencepairs. A binary translation grammar was extracted using a suffix array rule extractor (Lopez, 2007).The model was tuned using MERT (Och, 2003).The algorithms are compared on the NIST-03 ... Nonethe-less, in the next sections we use the above ideas todevelop a heuristic algorithm running in time linear in k.3 Cube Pruning With Constant SlopeConsider lists L1, L2defined as in section 2....

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