Báo cáo khoa học: "A Pylonic Decision-Tree Language Model with Optimal Question Selection" potx

... A Pylonic Decision-Tree Language Model with Optimal Question Selection Adrian Corduneanu University of Toronto 73 Saint ... This paper discusses a decision-tree approach to the problem of assigning probabilities to words following a given text. In contrast with previ- ous decision-tree language model attempts, an algorithm ... selecting nearly optimal questi...

Ngày tải lên: 17/03/2014, 07:20

... G 0 ). 3 Hierarchical Pitman-Yor Language Models We describe an n-gram language model based on a hierarchical extension of the Pitman-Yor process. An n-gram language model defines probabilities over ... the hierarchical Pitman- Yor language model with all G u ’s marginalized out. This gives us an alternative representation of the hierarchical Pitman-Yor language model that...

Ngày tải lên: 17/03/2014, 04:20

... that we finally need a language model p(ejle~-l), a translation model p(ej Id, Z) and a probability p(ejlEj). For p(ejle~ -1) we use a class-based polygram language model (Schukat-Talamazzini, ... combination of simpler models. The problem is to reduce parameters in a suffi- cient way but end up with a model still able to describe the linguistic facts of natural l...

Ngày tải lên: 08/03/2014, 05:21

... Our translation model is implemented as an N-gram model of operations using SRILM-Toolkit (Stolcke, 2002) with Kneser-Ney smoothing. We use a 9-gram model (m = 8). Integrating the language model the ... max E p LM (E)p(F, E) where p LM (E) is the monolingual language model and p(F, E) is the translation model. But our trans- lation model is a joint probability model, becau...

Ngày tải lên: 30/03/2014, 21:20

... recognition system. The language processor consists of a language model and a parser. The language model properly integrates the unification grammar and the Markov language model, while the parser ... summarized. The Laneua~e Model The goal of the language model is to participate in the selection of candidate constituents for a sentence to be identified. The propose...

Ngày tải lên: 08/03/2014, 07:20

... in our pa~ ser basically agrees with this position. In a rat~ er vague sense, the non-complete nodes of our tree correspond with the Active Node Stack, i.e. with the not yet completed constituents ... node REF2. The translation associated with CONN3 is (join %s tudent (select &sex ((~sex eq m))) ($student eq ~person)) The translation associated with REL2 is (select &am...

Ngày tải lên: 18/03/2014, 02:20

... antioxidant enzyme glutathione peroxidase (GPX). In this novel GPX model, b-cyclodextrin provided a hydrophobic environment for substrate binding within its cavity, and a cyclohexylamine group was incorporated ... selenium group should be critical in the construction of an effective GPX model. Previous studies by our group in prepar- ing GPX models using a mAb technique [15,16], bio- imprin...

Ngày tải lên: 19/02/2014, 02:20

... TREELET model, we also show results for the following baselines: 5-GRAM A 5-gram interpolated Kneser-Ney model. PCFG-LA The Berkeley Parser in language model mode. HEADLEX A head-lexicalized model ... that the n-gram language model used by the MT system was much smaller than the 5-GRAM model, as they were only trained on the English sides of their parallel data. fect language...

Ngày tải lên: 19/02/2014, 19:20

... instance with the minimal τ(c i k ), 2) the bracketable instance with the maximal τ(c i k ), 3) the unbracketable instance with the minimal τ(c i k ), and 4) the unbracketable instance with the maximal ... con- straints are sensitive to language pairs. In the fu- ture work, we will use other language pairs to test our models so that we could know whether our method is language- i...

Ngày tải lên: 20/02/2014, 07:20

... is still comparable with SVM. On the other hand, when we build separate models for copula and non-copula questions with different features, the performance of the overall model significantly in- creases ... tex- tual entailment analysis. Question- Type Classifier (QC): QC is the task of identifying the type of a given question among a predefined set of question types. The type of a q...

Ngày tải lên: 20/02/2014, 07:20