Báo cáo khoa học: "An Automatic Treebank Conversion Algorithm for Corpus Sharing" potx

... ing a simple and automatic approach for treebank conversion. Since the bracket information from a large treebank is the major external information required, the proposed algorithm is expected ... structure grammars or rules for identifying appro- priate constituents in the input text. Task Definition for Treebank Conversion Formally, the task for a treebank conv...

Ngày tải lên: 31/03/2014, 06:20

... put onto the task of automatic conversion of a treebank (source treebank) to fit a different stan- dard which is exhibited by another treebank (tar- get treebank) . Treebank conversion is desirable ... huminghan@ise.neu.edu.cn Abstract For the task of automatic treebank conversion, this paper presents a feature-based approach which encodes bracketing structures in a tree-...

Ngày tải lên: 17/03/2014, 00:20

... problems: 1. perform an acoustic processing able to extract from the speech signal an information A representative of its acoustic features, and, at the same time, adequate for a statistical ... number from I to 200), will then be substituted to th__e original vector. Therefore, the acoustic information ,4 is formed by a sequence of labels al, a2,"" , with a considerable r...

Ngày tải lên: 01/04/2014, 00:20

... elimination algorithm: REDUNDANCY-ELIMINATION(Ch, R) 1 for each split S in Ch 2 do if S is eliminable with respect to R 3 then remove S from Ch Prop. 3 shows that the algorithm is a correct algorithm for ... reduc- tion factor for an individual USR is 666.240. We also measured the ratio of USRs for which the algorithm achieves complete reduction (Fig. 6): The algorithm is co...

Ngày tải lên: 20/02/2014, 12:20

... AN EXTENDED LR PARSING ALGORITHM FOR GRAMMARS USING FEATURE-BASED SYNTACTIC CATEGORIES Tsuneko Nakazawa Beckman Institute for Advanced Science and Technology and Linguistics ... tsuneko@grice.cogsci.uiuc.edu ABSTRACT This paper proposes an LR parsing algorithm modified for grammars with feature-based categories. The proposed algorithm does not instantiate categories durin...

Ngày tải lên: 22/02/2014, 10:20

... ef- ficient algorithm for transforming LCFRS with fan-out at most 2 into a binary form, whenever this is possible. This results in asymptotical run-time improvement for known parsing algorithms for this ... parsing algorithms for LCFRS or equi- valent formalisms are found in the literature; see for instance (Seki et al., 1991; Boullier, 2004; Bur- den and Ljungl ¨ of, 2005). All of...

Ngày tải lên: 23/03/2014, 16:21

... to achieve comparable performance to (Tillmann and Zhang, 2005). The novel algorithm differs computationally from ear- lier work in discriminative training algorithms for SMT (Och, 2003) as follows: No ... gener- ated for each training sentence pair, reducing the memory requirements for the training algorithm as well. Although we are not able to rigorously prove fast convergence rat...

Ngày tải lên: 31/03/2014, 01:20

... explicit descriptions of objects and events for which we can form mental images. Animated 3D graphics have some advantages for the visualization of information. They can re- produce a real scene ... an automatic text-to-scene conversion system. It analyzes written descriptions of car accidents and synthe- sizes 3D scenes of them. The conver- sion process consists of two stages. An inf...

Ngày tải lên: 17/03/2014, 22:20

... segmentation can be performed ei- ther manually, by examining a graph, or automatically, using an optimization algorithm. The results of two ex- periments involving automatically locating ... regions of the article. Topic boundaries are useful for several different tasks. Hearst and Plaunt (1993) demonstrated their usefulness for information retrieval by showing that segmenting do...

Ngày tải lên: 08/03/2014, 07:20

... 2006. c 2006 Association for Computational Linguistics An Automatic Method for Summary Evaluation Using Multiple Evaluation Results by a Manual Method Hidetsugu Nanba Faculty of Information Sciences, ... can outperform other automatic methods, we compared the evaluation with other automatic methods. In this experiment, we used the similarity measure, which obtain the best...

Ngày tải lên: 17/03/2014, 04:20