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

... News Summarization The task of comparative news summarization is to briefly sum up the commonalities and differences between two comparable news topics by using human readable sentences. The summarization system ... xiaojianguo}@icst.pku.edu.cn Abstract Comparative News Summarization aims to highlight the commonalities and differences between two comparable news topics. In...

Ngày tải lên: 07/03/2014, 22:20

... all of the sentence scores are 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 them 2: repeat 3: Update U using Eq. (3); 4: Update V using Eq. (4); 5: Compute  f using Eq. (2); 6: until  f converges. 3.2 Algorithm Proced...

Ngày tải lên: 23/03/2014, 17:20

... of the FAQ relative to that question. find def 1.2 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 summarizati...

Ngày tải lên: 23/03/2014, 19:20

... 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 not help at ... handful of seeds is used to define the two polarity classes. The method is exper- imentally tested using a manually labeled set of positive and negative words. It out- performs the state of...

Ngày tải lên: 20/02/2014, 04:20

... 5–8, Columbus, June 2008. c 2008 Association for Computational Linguistics Generating research websites using summarisation techniques Advaith Siddharthan & Ann Copestake Natural Language and Information ... stylesheets are often considered inappropriate for diverse organisations. Research summary pages using stylesheets can offer alternative methods of information access and browsin...

Ngày tải lên: 20/02/2014, 09:20

... The clustering result using K-means; (c) Three elongated clusters in the 2D clustering space using Spectral clustering: two dominant eigenvectors; (d) The clustering result using Spectral-based ... is evaluated on ACE 2003 corpus, which contains 519 files from sources including broadcast, newswire, and newspaper. We only deal with intra-sentence explicit relations and assumed that all en...

Ngày tải lên: 20/02/2014, 12:20

... false-positive examples and is ineffi- cient. We solve these three problems by using topic information. 3 Set expansion using Topic information 3.1 Basic bootstrapping methods In this section, we ... with IREX 8 Named Entity types by CRFs using Mini- mum Classification Error rate (Suzuki et al., 2006), and transformed into features. The context features were defined using the template “(...

Ngày tải lên: 17/03/2014, 00:20

... 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 extra...

Ngày tải lên: 17/03/2014, 06:20

... (e.g., a prod- uct). In contrast, most previous work on multi- document summarization has focused on factual text (e.g., news (McKeown et al., 2002), biogra- phies (Zhou et al., 2004)). For factual ... of ud f i . 3 MEAD*: Sentence Extraction Most modern summarization systems use sen- tences extracted from the source text as the ba- sis for summarization (see (Nat, 2005b) for a rep- r...

Ngày tải lên: 24/03/2014, 03:20

... as- sumption that one of the two lists has constant slope. Using the fact that the merge of two lists as in (2) can be computed in time linear in the size of the output list, it is not difficult ... 239k sentence pairs. 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...

Ngày tải lên: 23/03/2014, 14:20