Báo cáo khoa học: "Using Corpus Statistics on Entities to Improve Semi-supervised Relation Extraction from the Web" pot

... how to integrate the results produced by the validating patterns into the whole relation extraction system. • We show how to use corpus statistics and term extraction methods to correct the ... speci- fied relations from the Web without human super- vision. Accordingly, the supervised input to the system is limited to the specifications of the targ...

Ngày tải lên: 23/03/2014, 18:20

... kernel over the original Chinese string representation around particular entities. The only relation they studied is PERSON-AFFLIATION. The insufficient study in Chinese relation extraction drives ... Microsoft Corporation” conveys the ACE-style relation “ORG-AFFILIATION” between the two entities “Bill Gates (PER)” and “Microsoft Corporation (ORG)”. The task of rel...

Ngày tải lên: 20/02/2014, 09:20

... ex- tends the sense definition with words from the definitions of related senses (such as hy- pernyms, hyponyms, etc.). We use the same set of relations available in the authors’ im- plementation of the ... Italian-English section to corsa n and gara n . To apply the CQC algorithm, a simple adapta- tion is needed, so as to allow (quasi-)cycles to con- nect word senses fro...

Ngày tải lên: 22/02/2014, 02:20

... unrelated to) other kinds of relation extraction tasks where each data item is tied to a specific sentence con- text (e.g., Girju et al. (2007)). One such relational reasoning task is the prob- lem ... re- lational distributional hypothesis therefore states that two word pairs are semantically similar if their members appear together in similar contexts. The distinction between lexic...

Ngày tải lên: 08/03/2014, 21:20

... secondary plot was constructed using the apparent S 0.5 values obtained in the presence and absence of inhibitor ver- sus inhibitor concentration. The linear regression was used to determine the ... purification in the absence of Triton X-100 and glycerol. Thus, to prevent enzymatic inacti- vation, Triton X-100 (0.015%) and glycerol (1–3%) were added to all buffers except for...

Ngày tải lên: 18/02/2014, 14:20

... The reaction was initiated by addition of the enzyme to the sub- strate solution, and the oxidation rate (nmolÆL )1 Æs )1 ) was calculated from the linear part of the oxygen consumption curve. The ... was verified. Overexpression of the tyrosinase gene in Trichoderma reesei The genomic tyr2 gene fragment was transferred by an LR recombination reaction from the pDONR22...

Ngày tải lên: 19/02/2014, 06:20

... fraction. A further purification of the proteins in this heme-containing fraction by gel fi ltration on Superdex 200 resulted again in only one heme-containing fraction eluted after 120–150 mL. In the final ... module of the enzyme complex mediates the electron transfer from menaquinol to an unidentified electron acceptor on the cytoplasmic side o f the membrane. This is suppo...

Ngày tải lên: 21/02/2014, 03:20

... been provided to support the steric effect to explain the cobalt–carbon cleavage mechanism. The binding energy for AdoCbl comes from inter- actions between proteins and the cofactor. From the viewpoint ... weakened within the enzyme active site [18,19]. The correlation between the distortion of the adenosyl group and cleavage of the cobalt–carbon bond is still not...

Ngày tải lên: 07/03/2014, 04:20

... giving the best fit to the scattering intensity. The resulting dummy atom model represents the shape of the scattering particle. To increase the reliability of the results, the final model for the ... mgÆmL )1 were performed to rule out a concentration effect in the data. The final experiments were performed at 0.24 mgÆmL )1 . The distance distribution function P(r)...

Ngày tải lên: 07/03/2014, 06:20

... able to increase their MAA content in response to UV-B radiation and thus may be able to adapt to daily fluctuations in solar radiation impinging on their natural environment. Action spectra for the ... Evolution. Isolation and cultivation of mycobionts Mycobionts from Collema cristatum were obtained from the spores discharged from the apothecia of a thallus, and were Cor...

Ngày tải lên: 07/03/2014, 15:20