Báo cáo khoa học: "Forest-based Tree Sequence to String Translation Model" ppt

... 1) TT2S: tree- based tree- to- string model by setting the forest pruning threshold to 1 best and the number of sub-trees in a tree sequence to 1. 2) TTS2S: tree- based tree- sequence to string system ... 6. A tree sequence to string rule 174A tree- sequence to string translation rule in a forest is a triple <L, R, A>, where L is the tree sequence in source language, R is the string ... al. (2007) propose the tree sequence con-cept and design a tree sequence to string transla-tion model. Zhang et al. (2008a) propose a tree sequence- based tree to tree translation model and...

Báo cáo khoa học: "NICT-ATR Speech-to-Speech Translation System" ppt

... BLEUJapanese -to- English 0.6998English -to- Japanese 0.7496Japanese -to- Chinese 0.6584Chinese -to- Japanese 0.7400English -to- Chinese 0.5520Chinese -to- English 0.6581Table 2 Mechanical evaluation of translation 5 ... ABCJapanese -to- English 78.4 86.3 92.2English -to- Japanese 74.3 85.7 93.9Japanese -to- Chinese 68.0 78.0 88.8Chinese -to- Japanese 68.6 80.4 89.0English -to- Chinese 52.5 67.1 79.4Chinese -to- English ... speech -to- speech translation system is shown below. Figure 1 Japanese -to- English Display of NICT-ATR Speech -to- Speech Translation System 5 CONCLUSION This paper presented a speech -to- speech...

Báo cáo khoa học: "A Tree Sequence Alignment-based Tree-to-Tree Translation Model" potx

... spaces. To address the above problems, Liu et al. (2007) propose to use forest -to- string rules to enhance the expressive power of their tree- to- string model. As is inherent in a tree- to- string ... phrases translations. 3.2 Tree Sequence Translation Model Given the source and target sentences1Jfand1Ie and their parse trees 1()JTf and1()ITe , the tree sequence- to -tree sequence ... single sub -tree mapping model to propose a tree sequence alignment-based translation model. To the best of our knowledge, this is the first attempt to empirically explore the tree sequence...

Tài liệu Báo cáo khoa học: "Obfuscating Document Stylometry to Preserve Author Anonymity" pptx

... that there are two ways to apply this information. The first is to simply correct the term to conform to the norms as defined by the authors in K. The second approach is to incorpo-rate characteristic ... discriminators, but it also means that we do not have a threshold value to drive the feature adjustment process. Token DTR Frequency Token DTR Frequency the , of to . and ... difficult to train a classifier to distinguish between M and D’ as it is to distinguish between H and D’. In this graph, the “0” curve corresponds to the original docu-ment, and the “14” curve to...

Tài liệu Báo cáo khoa học: "Using linguistic principles to recover empty categories" ppt

... the tree, on each pass applying a different set of rules. 1 for each tree, iterate over nodes from top down 2 for each node X 3 try to insert NP* in X 4 try to insert 0 in X 5 try to insert ... WHADVP 0 in X 6 try to insert *U* in X 7 try to insert a VP ellipsis site in X 8 try to insert S*T* or SBAR in X 9 try to insert trace of topicalized XP in X 10 try to insert trace of extraposition ... categories without parse trees, as in Dienes and Dubey (2003a). However, if the task is to insert empty nodes into a tree, then the method leads both to false positives and to false negatives....

Báo cáo khoa học: "From route descriptions to sketches: a model for a text-to-image translator" doc

... descriptions to sketches: a model for a text -to- image translator Lidia Fraczak LIMSI-CNRS, b£t. 508, BP 133 91403 Orsay cedex, France fraczak@limsi.fr Abstract This paper deals with the automatic ... descriptions into graphic sketches. We discuss some general prob- lems implied by such inter-mode transcrip- tion. We propose a model for an automatic text -to- image translator with a two-stage ... in trying to encode into a picture the information contained in a linguistic description. The present research is concerned with route descriptions (RDs) and their translation into 2- dimensional...

Báo cáo khoa học: "A Semantic Approach to IE Pattern Induction" ppt

... of expert labour to modify fora new extraction task. One approach to this problemis to use machine learning to automatically learn thedomain-speciﬁc information required to port a sys-tem ... simi-lar meanings to those already identiﬁedas relevant. Patterns are compared usinga variation of the standard vector spacemodel in which information from an on-tology is used to capture semantic ... relevant to thescenario) or irrelevant although the algorithmhas no access to this information.2. This corpus is pre-processed to generate the setof all patterns which could be used to representsentences...

Báo cáo khoa học: "A Functional Approach to Generation with TAG " pptx

... as the root node. The tree in Figure 2 is an auxiliary tree. The adjoining operation essentially inserts an auxiliary tree into another tree. For instance, the tree in Figure 5 is the ... is intended to capture. Going back to our example, in combining trees in the subregions with the tree chosen in the initial region rl, the agent tree would be combined with the tree in region ... describe the content to be ex- pressed. Mumble-86 uses a dictionary-like mecha- nism to transform a piece of the L-Spec into an el- ementary TAG tree which realizes that piece. The translation process...

Báo cáo khoa học: "Adjoining Tree-to-String Translation" potx

... rule extraction algo-rithm directly learns tree- to- string rules fromaligned Treebank-style trees. As tree- to- string translation casts decoding as a tree parsingproblem rather than parsing, the ... derived tree using tree- to- string rules that allow forboth substitution and adjoining. We describe how to convert TAG derivations to translation forest (Sec-tion 4). We evaluated the new tree- to- string ... without converting Treebank-style trees to TAG derivations explicitly (Section 3). As tree- to- string translation takes a source parse tree as input,the decoding can be cast as a tree parsing problem(Eisner,...

Báo cáo khoa học: "Improving Tree-to-Tree Translation with Packed Forests" potx

... However, while string -to -tree and tree- to- string models demonstrate promising re-sults in empirical evaluations, tree- to -tree modelshave still been underachieving.We believe that tree- to -tree models ... de-veloped for the tree- to- string case, it is possible to extend GHKM to extract all valid tree- to -tree rulesfrom aligned packed forests.In this section, we introduce our tree- to -tree ruleextraction ... use syntax on both sides.Second, tree- to -tree rules provide poorer rulecoverage. As a tree- to -tree rule requires that theremust be trees on both sides, tree- to -tree mod-els lose a larger amount...

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