Tài liệu Báo cáo khoa học: "A Kernel PCA Method for Superior Word Sense Disambiguation" ppt

... components as transformed via the trained PCA and KPCA parameters. The PCA- based and KPCA-based sense class predictions disagree. Observed vectors PCA- transformed vectors KPCA-transformed vec- tors Predicted Class Correct Class t ... Kong Abstract We introduce a new method for disambiguating word senses that exploits a nonlinear Kernel Prin- cipal Component Analysis (KPCA) tec...

Ngày tải lên: 20/02/2014, 16:20

... two words. An ambiguous word has the same number of EPs as of senses. Each EP's sense maps to a sense of ambiguous word. The semantic equivalence demands further equivalence at each sense ... semi-supervised learning method. This rein- forcement algorithm dates back to Gale et al. (1992a). Their investigation was based on a 6- word test set with 2 senses for each word....

Ngày tải lên: 20/02/2014, 12:20

... 61–64, Prague, June 2007. c 2007 Association for Computational Linguistics A Joint Statistical Model for Simultaneous Word Spacing and Spelling Error Correction for Korean Hyungjong Noh* Jeong-Won ... does not use word boundary, or Korean, which is normally segmented into Eojeols, not into words or morphemes. The previous algorithms for spelling error cor- rection basically...

Ngày tải lên: 20/02/2014, 12:20

... information of one lan- guage is used. Word frequency and posi- tion information for high and low frequency words are represented in two different vec- tor forms for pattern matching. New an- chor ... one word. Our program located some of these words. For ex- ample, Green was aligned to ,~j~,/~ and -~ which suggests that ,~j~ could be a single Chinese word. It indeed is th...

Ngày tải lên: 20/02/2014, 22:20

... ∈= is a word sense assignment function that gives the word senses numbered i of the word x. I x is the word sense indexing function of x that gives an index to each sense of the word x. ... coarse-grained senses in WordNet are adjusted sense based on corpus for SENSEVAL task. In order to evaluate the practical word sense disambiguation systems, the senses in t...

Ngày tải lên: 20/02/2014, 16:20

... pattern search method for bound constrained gloabal optimiza- tion. J Glob Optim 39 , 197–219. 34 Schmidt H & Jirstrand M (2006) Systems Biology Tool- box for MATLAB: a computational platform for research ... electrode. For starch extraction, pellets for ethanol extraction were solubilized by heating them to 95 °Cin0.5m NaOH for 30 min. After acidification with 1 m CH 3 COOH,...

Ngày tải lên: 14/02/2014, 22:20

... and the GPX activity for 6-CySeCD was higher than for 6-SeCD. Kinetics of 6-CySeCD Steady-state kinetics was observed for substrates H 2 O 2 and GSH. The initial velocities for reduction of H 2 O 2 by ... (b-CD) cavity provided a hydrophobic environ- ment for substrate binding [19–23]. For example, 6,6’-diseleno-bis-cyclodextrin (6-SeCD) activity for the reduction of hydrogen pe...

Ngày tải lên: 19/02/2014, 02:20

... target for prey capture. However, the genetic information for ÔunderdevelopedÕ a-conotoxins targeting other nAChR subtypes might still be present in the snails and could supply novel ligands for ... indicating that at least two other subunits are required for effective channel formation. In Correspondence to A. Nicke, Max Planck-Institute for Brain Research, Deutschordenstr. 46, D-6...

Ngày tải lên: 19/02/2014, 12:20

... paper, we formulate ex- tractive summarization as a two step learn- ing problem building a generative model for pattern discovery and a regression model for inference. We calculate scores for sentences ... provided for training summarization models and measuring the performance of machine generated summaries. Extractive summarization methods can be clas- sified into two groups: supervi...

Ngày tải lên: 20/02/2014, 04:20

... words into a mixture model. In our approach, we also adopt sentiment lex- icon-based method for opinion identification. Unlike the above methods, we generate a weight to a sentiment word for ... Therefore, in this paper we regard the information needs for opinion retrieval as relevant opinion. 2.2 Motivation of Our Approach In traditional information retrieval (IR) bag-of...

Ngày tải lên: 20/02/2014, 04:20