Báo cáo khoa học: "A Grammatical Approach to Understanding Textual Tables using Two-Dimensional SCFGs" docx

... 905–912, Sydney, July 2006. c 2006 Association for Computational Linguistics A Grammatical Approach to Understanding Textual Tables using Two-Dimensional SCFGs Dekai WU 1 Ken Wing Kuen LEE Human Language ... presented here aims to address this problem. Our model provides an enabling foun- dation toward a linguistic approach by first shift- ing to a two-dimensional CFG...

Ngày tải lên: 08/03/2014, 02:21

... seeds are retrieved from the repository to train a decision list for NE classification. 3. The learned rules are applied to the NE candidates stored in the repository. 4. The proper names tagged ... 86.7% To benchmark the quality of the automatically constructed corpus (Table 2), the testing corpus is first processed by our parser and then saved into the repository. The reposi...

Ngày tải lên: 20/02/2014, 16:20

... will then move to considering other attributes of the courses. It appears that the plan-based framework can be extended to handle many such dialogues, perhaps by using meta-plans to represent ... task-related plan and focusing tech- niqces are necessary in order to identIDi that portion of the underlying plan to which a frasmen- tar7 utterance refers. Focusing mechanAa...

Ngày tải lên: 21/02/2014, 20:20

... parame- ters for a keyword extractor embedded in the Ex- tractor tool. 3 Or ˘ asan et al. (2000) enhanced the preference-based anaphora resolution algorithms by using a GA to find an optimal set of values ... op- eration. 3 http://www.extractor.com/ 928 Today, graph-based text representations are be- coming increasingly popular, due to their abil- ity to enrich the document model with...

Ngày tải lên: 07/03/2014, 22:20

... in bootstrapping to evaluate the quality of the pat- terns automatically. IE and QA approaches, due to uniqueness assumptions of the real-world rela- tions that these methods search for, have an auto- matic ... goals, although they are superficially similar to the correct contexts. While string-based approaches (Paice, 1981; Teufel, 1998) are too restrictive to cover the wide varia- ti...

Ngày tải lên: 08/03/2014, 02:21

... researchers tried to encode do- 2 http://www.nlm.nih.gov/mesh/ 3 http://www.nlm.nih.gov/research/umls/ Total radiology records 1,954 Total tokens 51,940 Total ICD-9-Codes 45 Total code instances ... and Future Work Compared to a flat classification approach, a hier- archical framework is able to exploit relationships among categories to be assigned and easily adapts to much larger te...

Ngày tải lên: 31/03/2014, 00:20

... files for providing a grammatical analysis of -n~estricted English text. From 1981-83, a suite of PASCAL programs was devised to automatically produce a single level of grammatical description ... word token in the corpus. Error analysis and subsequent modification to the system resulted in over 96 per cent of word tags being correctly assigned automatically. The remaining...

Ngày tải lên: 22/02/2014, 09:20

... SThe ruJels may need to be used tecureively to get to a constanL aEvery expression in WML has a type. 4.1.¢ Knowledge Acquisition We have developed two complementary tools to greatly increase ... has a role from A to B (or from B to A) can be referred to by a definite NP. This has not yet been integrated into the Janus model of reference processing [4]. 4.3.2. Metonymy...

Ngày tải lên: 21/02/2014, 20:20

... these cytochromes have been proposed to be ter- minal Fe(III) and Mn(IV) reductases, although their role in the reduction of other metals is less well understood. To obtain more insight into this, we ... Journal compilation ª 2007 FEBS A kinetic approach to the dependence of dissimilatory metal reduction by Shewanella oneidensis MR-1 on the outer membrane cytochromes c OmcA and OmcB J...

Ngày tải lên: 07/03/2014, 09:20

... head” for the sentence. In order for the algorithm to parse sen- tences correctly, we will need to define D-rules to allow w 0 to be linked to the real sentence head. 3.3 ES99 (Eisner and Satta, ... inference rules. However, in order to de- fine such a formalism we have to tackle some issues specific to dependency parsers: • Traditional parsing schemata are used to de- fine gram...

Ngày tải lên: 08/03/2014, 01:20