Báo cáo khoa học: "Discourse Cues for Broadcast News Segmentation" potx

... other news programs such as CNN Prime News (See Figure 1) or MS-NBC. For example, the structure for the Jim Lehrer News Hour provides not only segmentation information but also content information ... 819 2.1 News Story Discourse Structure Broadcast news has a prevalent structure with often explicit cues to signal story shifts. For example, analysis of the structure of ABC World News Tonight ... discourse cues to the automated segmentation of broadcast news. We describe our analysis of a broadcast news corpus, the design of a discourse cue based story segmentor that builds upon information...

Báo cáo khoa học: "Morphological Cues for Lexical Semantics" pot

... there may be no derivational cues for the lexical semantics of a particular word. This is not the case for other surface cues, e.g., distributional cues exist for every word in a corpus. ... identifiable abundant surface cues exist for the needed lexical semantic information. The next section explores the possibility of using derivational affixes as surface cues for lexical semantics. ... semantic information. Word sense disambiguation for the bases and derived forms that could not be resolved using part- of-speech tags was not performed. However, there exist systems for such...

Báo cáo khoa học: "Discourse Structures for Text Generation" doc

... the Request schema for inducing actions, the Evidence schema for making claims credible, the/nform schema for causing the reader to know particular information, and so forth. Our knowledge ... particular kinds of purposes which they serve: questions for obtaining information, marked syntactic constructions for creating emphasis, and so forth. At the schema level as well, it is easy to associate ... easily formalized. 10In this paper we do not separate the theow into framework and schemas, zdthough for other purposes there is a clear advantage and possibility of doing so. In its informal form...

Tài liệu Báo cáo khoa học: "Unsupervised Search for The Optimal Segmentation for Statistical Machine Translation" doc

... 31–36,Uppsala, Sweden, 13 July 2010.c2010 Association for Computational LinguisticsUnsupervised Search for The Optimal Segmentation for StatisticalMachine TranslationCos¸kun Mermer1,3and ... segmentationschemes can outperform a straightforward linguis-tic morphological segmentation, e.g., (Habash andSadat, 2006), and (ii) it may result in even worseperformance than a word-based system, ... likelihood for Model 1. However, running the EM algorithmto optimization for each considered segmentationmodel can be computationally expensive, and canresult in overtraining. Therefore, in...

Báo cáo khoa học: "Transductive learning for statistical machine translation" potx

... genres:editorials, newswire and political speeches in the2004 test set, and broadcast conversations, broad-cast news, newsgroups and newswire in the 2006test set. Most of these domains have characteristicswhich ... Algorithm 1 we run it for a fixed numberof iterations and instead focus on finding useful def-initions for Estimate, Score and Select that can beexperimentally shown to improve MT performance.3.2 The ... translations contained in the N-best list. For details, see (Ueffing and Ney, 2007).Again, the single values are multiplied to obtain ascore for the whole sentence. For NIST, the lan-guage model score...

Báo cáo khoa học: "Pronunciation Modeling for Improved Spelling Correction" potx

... presents a method for incor-porating word pronunciation informationin a noisy channel model for spelling cor-rection. The proposed method builds anexplicit error model for word pronuncia-tions. ... correspond to nothing (i.e., are silent). For example, the entry in NETtalk (when we removethe empties, which contain information for phonelevel alignment) for the word able isABLEebL.The correct ... selects for a misspelling w the word r in thedictionary for which the productis maximized. In our experiments we used a uniformsource language model over the words in the dictio-nary. Therefore...

Báo cáo khoa học: "Extractive Summaries for Educational Science Content" potx

... basis for the construction of knowledge maps useful both as computational knowledge representations and as learning re-sources for presentation to the student. 2 Related Work Our work is informed ... of very fine granularity and therefore graphs that may not be suitable for presentation to a student. Multi-document summarization (MDS) re-search also informs our work. XDoX analyzes large ... Volume), pages 17–20,Columbus, Ohio, USA, June 2008.c2008 Association for Computational LinguisticsExtractive Summaries for Educational Science Content Sebastian de la Chica, Faisal Ahmad,...

Báo cáo khoa học: "Topic Analysis for Psychiatric Document Retrieval" potx

... to different suggestions decided by experts. Therefore, an ideal retrieval system for consultation documents should consider such topic information so as to improve the retrieval precision. ... extraction of topic informa-tion is described briefly. The detailed process is described in (Wu et al. 2005a) for symptom and relation identification, and in (Yu et al., 2007) for event identification. ... a set of dis-course markers. For instance, the discourse markers "because" and "therefore" may signal cause-effect relations, and "before" and "after"...

Báo cáo khoa học: "AN ALGORITHM FOR PLAN RECOGNITION COLLABORATIVE DISCOURSE*" pot

... recipe represents information about the performance, in the ab- stract, of act-types, an rgraph represents more spe- cialized information by including act-type performance agents and times. ... assumptions made by his formal model, we directly compare our algorithm to his. ACTION P~EPRESENTATION We use the action representation formally defined by Balkanski (1990) for modelling collaborative ... graph-based algorithms derived from his formal model of plan recognition. In Kautz's algorithms, an explanation for an observation is represented in the form of an explanation graph or egraph....

Báo cáo khoa học: "Genre distinctions for Discourse in the Penn TreeBank" pot

... comprise the “right” set of genres for future use of the PTB for discourse-related676language technology, just that some sensitivity togenre will lead to better performance.Some simple differences ... mean that the latter have to belearned independently of the former.8 ConclusionThis paper has, for the first time, provided genreinformation about the articles in the Penn Tree-Bank. It has ... subjectivity in text. Otheraspects of genre may be even more significant for language technology. For example, whereas thefirst sentence of a news article might be an effec-tive summary of its contents...

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