Báo cáo khoa học: "Topic-Focused Multi-document Summarization Using an Approximate Oracle Score" doc

... LinguisticsTopic-Focused Multi-document Summarization Using an Approximate Oracle ScoreJohn M. Conroy, Judith D. SchlesingerIDA Center for Computing SciencesBowie, Maryland, USAconroy@super.org, ... multi-document summary given a collection of doc- uments. Most automatic methods of multi-document summarization are largely extractive.This mimics the behavior of humans for sin-gle document summarization; ... Pendersen,and Chen 1995) reported that 79% of the sentencesin a human-generated abstract were a “directmatch” to a sentence in a document. In contrast,for multi-document summarization, (Copeck andSzpakowicz...

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

... Computational LinguisticsComparative News Summarization Using Linear ProgrammingXiaojiang Huang Xiaojun Wan∗Jianguo XiaoInstitute of Computer Science and Technology, Peking University, Beijing ... (Peking University), MOE, China{huangxiaojiang, wanxiaojun, xiaojianguo}@icst.pku.edu.cnAbstractComparative News Summarization aims tohighlight the commonalities and differencesbetween two comparable ... facts and views in news article(Zhai et al., 2004) and Blogs (Wang et al., 2009).The comparative information can be extracted fromexplicit comparative sentences (Jindal and Liu,2006a; Jindal and...

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

... importanceof this task.One can cast answer-ﬁnding as a traditional docu-ment retrieval problem by considering each candidateanswer as an isolated document and ranking each can-didate answer ... containing an answer to a question is ratherstricter than mere relevance. Put another way, only asmall number of documents actually contain the an- swer to a given query, while every document can inprinciple ... weights were calculated using shrinkage.it was drawn—is not so important.From a set of rankings , one canmeasure the the quality of a ranking algorithm using the harmonic mean rank:defA lower number...

Báo cáo khoa học: Protein database searches using compositionally adjusted substitution matrices docx

... the analysis of such proteins, we have previouslydescribed a rationale and an efficient algorithm,improved here, for transforming a standard matrixinto one appropriate for any specified nonstandardcompositional ... only substantial E-value chan-ges, of greater than a factor of 10, i.e., score changesgreater than 3.3 bits, the case by case advantage ofmode D is vitiated. We therefore prefer modes B and Cto ... atransmembrane-specific substitution matrix. Predictedhydrophobic and transmembrane. Bioinformatics 16,760–766.28 Muller T, Rahmann S & Rehmsmeier M (2001) Non-symmetric score matrices and...

Báo cáo khoa học: " Named Entity Recognition using an HMM-based Chunk Tagger" pptx

... F-measures of 96.6% and 94.1% respectively. It shows that the performance is significantly better than reported by any other machine-learning system. Moreover, the performance is even consistently ... ContainsDigitAndAlpha and ContainsDigitAndDash, the former will take precedence. The first eleven features arise from the need to distinguish and annotate monetary amounts, percentages, times and ... is the semantic classification of important triggers, as seen in Table 3, and is unique to our system. It is based on the intuitions that important triggers are useful for NER and can be classified...

Báo cáo khoa học: "Constraint-based Sentence Compression An Integer Programming Approach" docx

... summarisation (Jing 2000), subtitle genera-tion from spoken transcripts (Vandeghinste andPan 2004) and information retrieval (Olivers andDolan 1999). Sentence compression is a complexparaphrasing ... standard, D: Decision-tree, LM: IPlanguage model, Sig: IP language model with sig-nificance score)Model CompR RatingDecision-tree 56.1% 2.22∗†LangModel 49.0% 2.23∗†LangModel+Significance ... significance score above is computed using alarge corpus where wiis a topic word (i.e., a nounor verb), fiand Fiare the frequency of wiin thedocument and corpus respectively, and Fais...

Báo cáo khoa học: "Stochastic Language Generation Using WIDL-expressions and its Application in Machine Translation and Summarization" pot

... thisalgorithm, using an average of tiles persentence (for an average input sentence length of30 words) and an average of possible trans-lations per tile, encodes a candidate set of about10 possible translations. ... large setof candidate realizations, and, in a second phase,statistical knowledge about the target language(such as stochastic language models) to rank thecandidate realizations and ﬁnd the ... , , and with in-goingedges labeled , , and , respectively, andvertices , , and with out-going edges la-beled , , and , respectively, result fromthe expansion of the operator. Verticesand...

Tài liệu Báo cáo khoa học: "Grammar Error Correction Using Pseudo-Error Sentences and Domain Adaptation" pdf

... errors, and the CRF models aretrained using the alignment results as superviseddata.2.2 Insertion / DeletionSince an insertion can be regarded as replacing an empty word with an actual word, and ... statistical ma-chine translation (PBSMT), but there are three dif-ferences; 1) it adopts the conditional random ﬁelds,2) it allows insertion and deletion, and 3) binary andreal features are ... 2010;Han et al., 2010; Rozovskaya and Roth, 2011).On the contrary, Mizumoto et al. (2011) proposedtranslator-based error correction. This approach canhandle all error types by converting...

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

... Polarity Using Random WalksAhmed HassanUniversity of Michigan Ann ArborAnn Arbor, Michigan, USAhassanam@umich.eduDragomir RadevUniversity of Michigan Ann ArborAnn Arbor, Michigan, USAradev@umich.eduAbstractAutomatically ... product is very impor-tant for marketing and customer relation manage-ment (Morinaga et al., 2002). Manually handlingreviews to identify reputation is a very costly, andtime consuming process ... theirmethod only using adjectives.Hu and Liu (2004) use WordNet synonyms andantonyms to predict the polarity of words. Forany word, whose polarity is unknown, they searchWordNet and a list of...

Tài liệu Báo cáo khoa học: "Automatic Headline Generation using Character Cross-Correlation" doc

... to handle huge amount of documents, which is a tedious and time-consuming process. Instead of reading every document, the headline can be used to decide which of them contains important infor-mation. ... extractive and abstrac-tive. In the work of (Douzidia and Lapalme, 2004), and extractive method was used to produce a 10-words summary (which can be considered as a headline) of an Arabic document, ... of a document and the step of generat-ing a title from the estimated information source, but it was for English documents. 1.1 Headline Length One of the tasks of the Document Understanding...

Xem thêm