Tài liệu Báo cáo khoa học: "REPRESENTATION OF TEXTS FOR INFORMATION RETRIEVAL" pdf

... OF TEXTS FOR INFORMATION RETRIEVAL N.J. Belkin, B.G. Michell, and D.G. Kuehner University of Western Ontario The representation of whole texts is a major concern of the field known as information ... maps, of the abstracts and problem statements which were evaluated by the authors of the texts (Figure 2) (Figure 3). CLUSTERING LARGE FILES OF DO~NTS USING THE...

Ngày tải lên: 21/02/2014, 20:20

... the found set of features for text classification (index- ing) for an OIR query of the first level (finds opin- ionated information) and for an OIR query of the second level (finds opinionated information ... of features for retrieval of Chinese opinionated information. As stated earlier (see Section 1), we assume that the task of retrieval of opinionated texts (OIR)...

Ngày tải lên: 20/02/2014, 12:20

... therefore cannot cover fresh words or new usages of existing words. Secondly, their search 1 http://www.engkoo.com. functions are often limited, making it hard for users to effectively find information ... sample sentences in Engkoo because of their crucial role in language learning. Engkoo offers new methods for the self-exploration of language based on the applied linguistic theo...

Ngày tải lên: 20/02/2014, 05:20

... effort, yet there is very limited avail- ability of off-the shelf tools for researchers whose interests are not in coreference, or for researchers who want to concentrate on a specific aspect of ... of identify- ing noun phrases that refer to the same extralinguis- tic entity in a text. Using coreference information has been shown to be beneficial in a number of other tasks, inclu...

Ngày tải lên: 20/02/2014, 09:20

... provides the departure point for our in- vestigation of coreference resolution on spontaneous and unconstrained speech and gesture. 4.1 Form of the model The form of the model used in this application ... learn a different set of feature weights for each case: w v,1 when the non-verbal features are included, and w v,2 otherwise. The formal definition of the potential function fo...

Ngày tải lên: 20/02/2014, 12:20

... Mismatches With Information Flow Megumi Kameyama, Ryo Ochitani, Stanley Peters The Center for the Study of Language and Information Ventura Hall, Stanford University, Stanford, CA 94305 ABSTRACT ... preserve the information con- tent of the source text. This information has at least three major sources: Content, Context, Language. From the content, we obtain a piece of...

Ngày tải lên: 20/02/2014, 21:20

... well formed formulas. In the following sections symbols from the Greek alpha- bet axe used to stand for arbitrary formulas in FML. The formulas NIL and TOP axe intended to convey gno information ... paths of P(~) by letting 4.2 Domain of Descriptions: Logical Formulas We now define the domain FML of logical for- mulas which describe feature structures. Figure 3 define...

Ngày tải lên: 21/02/2014, 20:20

... characteristics of the Albers–Post scheme The number of peaks (i.e. the number of up–down conformational changes of SERCA) per unit time was dependent on the ATP concentration (Fig. 1B,C). The number of peaks ... shorter conforma- tion fi ATP hydrolysis-mediated elevated conforma- tions fi Ca 2+ -binding shorter conformation), and the number of peaks must correspond to the velocity...

Ngày tải lên: 14/02/2014, 14:20

... comprised: 94 °C for 30 s, 55 °C for 30 s, 72 °C for 60 s, 30 cycles for CD163; 94 ° C for 30 s, 57 °C for 30 s, 72 °C for 60 s, 30 cycles for CYP1A1; 94 °C for KCs in drug-metabolizing dysfunction ... experimental groups For depletion of KCs in vivo, 7.5 mgÆkg )1 of GdCl 3 was injected via the tail vein at 48 and 24 h before the perfor- mance of CLP or sham operatio...

Ngày tải lên: 14/02/2014, 18:20

... solvent. There- fore, the solvation of backbone atoms is much larger for a conformers than for b conformers. Interaction with solvent thus compensates for the destabilization of the a conformation ... unfold- ing of the a-helix from the body of the b-sheet (Fig. 2C). Possible role of domain-swapping in the ‘off-pathway folding’ (OFF) model The OFF model for amyloid formation...

Ngày tải lên: 14/02/2014, 18:20