Báo cáo khoa học: "A MARKOV LANGUAGE LEARNING MODEL FOR FINITE PARAMETER SPACES" pptx

... Abstract This paper shows how to formally characterize lan- guage learning in a finite parameter space as a Markov structure, hnportant new language learning results fol- low directly: ... Lightfoot (1990). In conclusion, by introducing a formal mathematical model for language acquisition, we can provide rigor- ous results on parameter learning, algorithmic var...

Ngày tải lên: 23/03/2014, 20:21

... and AFNLP A Syntax-Driven Bracketing Model for Phrase-Based Translation Deyi Xiong, Min Zhang, Aiti Aw and Haizhou Li Human Language Technology Institute for Infocomm Research 1 Fusionopolis ... then 8: Update bracketing instances for index j 9: end if 10: end if 11: end for 12: for each j ∈ c do 13:  :=  ∪ {bracketing instances from j} 14: end for 15: Output: bracketing ins...

Ngày tải lên: 20/02/2014, 07:20

... sys- tem. For all three systems we trained the transla- tion model on the FBIS corpus (7.2M+9.2M words); for the language model, we used the SRI Language Modeling Toolkit to train a trigram model ... standing for X spanning f j i . We choose b and β to balance speed and performance on our development set. For our experiments, we set b = 40, β = 10 −1 for X cells, and b = 15...

Ngày tải lên: 17/03/2014, 05:20

... Right-corner transform Binarized trees 2 are then transformed into right- corner trees using transform rules similar to those described by Johnson(1998a). This right-corner transform is simply the ... Minnesota schuler@cs.umn.edu Abstract This paper describes a syntactic representation for modeling speech repairs. This representa- tion makes use of a right corner transform of syntax trees t...

Ngày tải lên: 20/02/2014, 09:20

... normalization model consists of two sub-models: a word-based language model (LM), characterized by 1 (| ) nn P ee − ) k and a phrase- based lexical mapping model (channel model) , characterized ... di- versity in different user groups and domains can be modeled separately without accessing and adapting the language model of the MT system for each SMS application. Another...

Ngày tải lên: 20/02/2014, 12:20

... more kernels for restricted syntaxes or specific do- mains, such as string kernel for text categoriza- tion (Lodhi et al., 2002), tree kernel for syntactic parsing (Collins and Duffy, 2001), kernel for ... set. The final performance is shown in Table 4. 6 Conclusions and Future Work In this paper we proposed the hybrid convolu- tion kernel to model syntactic structure informa- tion f...

Ngày tải lên: 20/02/2014, 12:20

... the DOM tree alignment model, sen- tence alignment model, and candidate web page pair verification model are introduced. 4 DOM Tree Alignment Model The Document Object Model (DOM) is an appli- cation ... alignment model for machine translation. For example, (Wu 1997; Alshawi, Bangalore, and Douglas, 2000; Yamada and Knight, 2001) have studied syn- chronous context free gram...

Ngày tải lên: 08/03/2014, 02:21

... retrieval per- formance when the retrieval model was based on WSD information. On the contrary, the construc- tion of a sense-based retrieval model by Stokoe et al. (2003) improved performance, while ... Space Models (GVSM) extend the standard Vector Space Model (VSM) by embedding addi- tional types of information, besides terms, in the representation of documents. An interesting type o...

Ngày tải lên: 08/03/2014, 21:20

... in- duced using a hidden Markov model based alignment model (Vogel et al., 1996) initialized with bilexical parameters from IBM Model 1 (Brown et al., 1993). Both alignment models were trained using ... to model these constraints is with a unification-based gram- mar (UBG). Johnson (2003) presented algorithms for learning and parsing with stochastic UBGs. However, training data...

Ngày tải lên: 16/03/2014, 19:20

... often provides important clues for POS tagging, and the POS tags contain much syntactic information, which need context information within a large window for disambiguation. For example, Huang et al. ... discriminative joint model with a first order semi -Markov structure, and the other seg- menter is based on a first order Markov model. Ex- act Viterbi-style search algorithms are u...

Ngày tải lên: 17/03/2014, 00:20