Báo cáo khoa học: "Text Chunking using Regularized Winnow" potx

... Text Chunking using Regularized Winnow Tong Zhang and Fred Damerau and David Johnson IBM T.J. Watson Research ... the basic features enhanced by using ESG syntactic roles, showing that using more linguis- tic features can enhance the performance of the system. In addition, since regularized Winnow is able to ... problems that may not be linearly separable. In this paper, we compar...

Ngày tải lên: 31/03/2014, 04:20

... important information for noun phrase and verb phrase chunking respectively. With only a few simple rules using such information, the performance of chunking Korean is as good as the rivaling other ... O, there exist nine chunk types. 5.2 Performance of Chunking by Rules Table 4 shows the chunking performance when only the rules are applied. Using only the rules gives 97.99% of ac...

Ngày tải lên: 17/03/2014, 06:20

... apply the ETL framework to fourphrase chunking tasks: Por- tuguese noun phrase chunking, English base noun phrase chunking, English text chunking and Hindi text chunking. In all four tasks, ETL shows ... over four 647 phrase chunking tasks: (1) English Base Noun Phrase (NP) chunking; (2) Portuguese NP chunk- ing; (3) English Text Chunking; and (4) Hindi Text Chunking. Base NP chu...

Ngày tải lên: 23/03/2014, 17:20

... (83.3%) Table 1. Comparison of segmentation algorithm using different linguistic features. Discussion: The segmentation algorithm using the linguistic features word repetition and collocation ... and collocation are used to identify related words. These relations are automatically located using a combination of three linguistic features: word repetition, collocation and relati...

Ngày tải lên: 31/03/2014, 04:20

... Semantic Interpretation Using KL-ONE 1 Norman K. Sondheimer USC/Information Sciences Institute Marina del Rey, California ... of Bobrow and Webber [Bobrow&Webber 80a, Bobrow&Webber 80b] on semantic interpretation using KL-ONE to represent knowledge. The approach is based on an extended case frame formalism ... knowledge need "to be employed, e.g., selection restriction...

Ngày tải lên: 24/03/2014, 01:21

... 8-14 July 2012. c 2012 Association for Computational Linguistics Text Segmentation by Language Using Minimum Description Length Hiroshi Yamaguchi Graduate School of Information Science and Technology, University ... Empirical re- sults demonstrating the potential of this ap- proach are presented for experiments using texts taken from the Universal Declaration of Human Rights and Wikipedi...

Ngày tải lên: 07/03/2014, 18:20

... proteins were collected onto glass fiber filters using a cell harvester, washed with 5% trichloroacetic acid (w/v), and radioactivity was counted using a liquid scintil- lation counter. Background ... was determined by UV spectroscopy, using an extinction coefficient of 10 280 M )1 Æcm )1 [22]. AAP concentrations were also determined spectrophotometri- cally using an extinction coefficien...

Ngày tải lên: 19/02/2014, 12:20

... 1999), using a polynomial kernel with degree 4 and additive term 1. As a baseline, we trained and tested a model using only the lexical-matching features. We then trained and tested models using ... 10598 {dbikel,vittorio}@us.ibm.com Abstract This paper describes a novel event-matching strategy using features obtained from the tran- sitive closure of dependency relations. The method y...

Ngày tải lên: 20/02/2014, 09:20

... original sentence order (OSO). We also mea- sure the quality of the proposed documents using TAU and BLEU, using as reference the OSO. In Table 1, we report the performance of four search algorithms. ... non-hierarchical representations of discourse, and can be trained with minimal human intervention, using large col- lections of existing human-authored documents. These models are attra...

Ngày tải lên: 20/02/2014, 12:20

... the two synonym extraction approaches based on dis- tributional similarity: one using syntactic context and one using translational context based on word alignment and the combination of both. ... Netherlands {vdplas,tiedeman}@let.rug.nl Abstract There have been many proposals to ex- tract semantically related words using measures of distributional similarity, but these typically are no...

Ngày tải lên: 20/02/2014, 12:20