Báo cáo khoa học: "A Discriminative Language Model with Pseudo-Negative Samples" pptx

... training. 3 Discriminative Language Model with Pseudo-Negative samples We propose a novel discriminative language model; a Discriminative Language Model with Pseudo- Negative samples (DLM-PN). In this model, pseudo-negative ... propose a novel discrim- inative language model, which can be ap- plied quite generally. Compared to the well known N-gram language mod...

Ngày tải lên: 08/03/2014, 02:21

... statistical language modeling, and language identification. A typical LID system is illustrated in Figure 1 (Zissman, 1996), where language dependent voice tokenizers (VT) and lan- guage models ... Tokenization at different resolutions 2.2 n-gram Language Model With the sequence of tokens, we are able to es- timate an n-gram language model (LM) from the statistics. It is g...

Ngày tải lên: 20/02/2014, 15:20

... Structured Language Model Ciprian Chelba The Johns Hopkins University CLSP, Barton Hall 320 3400 N. Charles Street, Baltimore, MD-21218 chelba@j hu. edu Abstract The paper presents a language model ... of long distance dependencies. The model as- signs probability to every joint sequence of words-binary-parse-structure with head- word annotation. The model, its proba-...

Ngày tải lên: 22/02/2014, 03:20

... induction, and finite-state modeling. 1 Introduction Computational linguistics has become a more experi- mental science. One often uses real-world data to test one’s formal models (grammatical, statistical, ... intensive work, given complex models or a large search space (as in modern statistical parsing and machine translation). It is a major effort to break into the field with a new system,...

Ngày tải lên: 20/02/2014, 16:20

... constituents. 3 A Noisy-Channel Model For a given document , we want to find the summary text that maximizes . Using Bayes rule, we flip this so we end up maximizing . Thus, we are left with modelling two probability ... rule, reffered to as the noisy-channel model, is that we start with a summary and add “noise” to it, yielding a longer document . The noise added in our model consists...

Ngày tải lên: 08/03/2014, 07:20

... compare 14 First-pass models Model BLEU 1 best 30 best Lang Model (Permutations) 58.8 71.2 Lang Model (TargetProjective) 83.9 95.0 Local Tree Order Model 75.8 87.3 Local Tree Order Model + Lang Model 92.6 ... and target treelets. The baseline SMT model combines this treelet translation model with other feature functions — a target language model, a tree order model, lexi...

Ngày tải lên: 20/02/2014, 12:20

... problem based on a two-step hybrid model: a generative model for hierarchical topic discovery and a regression model for inference. We investigate if a hierarchi- cal model can be adopted to discover ... hierarchical model and re- gression model to score sentences in new docu- ments, eliminating the need for building a genera- tive model for new document clusters. 3 Summary-Focus...

Ngày tải lên: 20/02/2014, 04:20

... opinion re- trieval model in the framework of generative language modeling (Eguchi and Lavrenko, 2006). They modeled a collection of natural language documents or statements, each of which con- sisted ... the degree of each word pair through a graph-based model in the following section. 3.2 HITS Model We propose an opinion retrieval model based on HITS, a popular graph r...

Ngày tải lên: 20/02/2014, 04:20

... dependent with respect to the par- ent 3 , and its adjacent left sister (null if not present) specified with the same level of details of B. The model applies only to dependent blocks 4 . The second model ... to the three models (BGM, BEM, WFM) specified in equations (2-4) and explained in the main text. 3 A probabilistic Model for TDS This section describes the probabilistic generati...

Ngày tải lên: 20/02/2014, 04:20

... sentence processing model is lim- ited to the DO/SC ambiguity, and the description of their model is not clear. In addition, their model is far beyond a simple statistical model: the in- teraction ... This is a limitation of our model, and does not match any previous empirical finding. 5 Discussion The current study explores Corley and Crocker’s model( 2000) further on the model s ac...

Ngày tải lên: 20/02/2014, 11:21