stochastic context-free grammar
A Trellis Based Algorithm For Estimating The Parameters Of Hidden Stochastic Context Free Grammar
... A Trellis Based Algorithm For Estimating The Parameters Of Hidden Stochastic Context Free Grammar A A T r e l l i s B a s e d A l g o r i t h m For E s t i m a t i n g T h e P a r a m e t e r s O f H[.] ...
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Dialogue Act Prediction Using Stochastic Context Free Grammar Induction
... The hypothesis j is generated because of the similar context (which is underlined). The hypothesis i, the full span, is introduced by default, as it might be possible that the se- quence is in itself a part of a ...
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Book Reviews: Beyond Grammar: An Experience based Theory of Language
... The result is that counts of tree fragments of a wide range of sizes are considered: everything from counts of single-level rules as in a Stochastic Context-Free Grammar to counts of en-[r] ...
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Inside Outside Reestimation From Partially Bracketed Corpora
... We have introduced a modification of the wellknown inside-outside algorithm for inferring the parameters of a stochastic context-free grammar that can take advantage of constituent infor[r] ...
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Automatic Learning of Context-Free Grammar
... learning context- free grammar from sample text is a difficult ...a context-free grammar which derives exactly one string is reduced to a simpler grammar generating the ...
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An Efficient Probabilistic Context Free Parsing Algorithm that Computes Prefix Probabilities
... We describe an extension of Earley's parser for stochastic context-free grammars that computes the following quantities given a stochastic context-free grammar and an input string: a pro[r] ...
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Probabilistic Context Free Grammar Induction Based on Structural Zeros
... in stochastic context-free parsing, which can be ex- plained by the grammar factor in the running-time complexity of standard parsing algorithms such as the CYK algorithm (Kasami, 1965; ...
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Parsing the Wall Street Journal with the Inside Outside Algorithm
... We report grammar inference experiments on partially parsed sentences taken from the Wall Street Journal corpus using the inside-outside algorithm for stochastic context-free grammars.. [r] ...
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Generalized Multitext Grammars
... titext Grammar (MTG), a formalism for synchro- nizing context-free grammars recently proposed by Melamed ...generate context- free languages to component grammars whose gen- erative ...
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An Alternative Method of Training Probabilistic LR Parsers
... The theory of probabilistic pushdown automata (Santos, 1972) can be easily applied to LR parsing. A probability is then assigned to each transition, by a function that we will call the probability function p A , and the ...
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CRYPTOSCANF: CRYPTOSYSTEM USING CFG
... the grammar given only the strings generated by it, however it is easy to generate and validate strings from a given ...Keywords: Grammar, Cryptosystem, Symmetric, CFG, Encryption, Decryption ...
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PP 2008 24: The Data Oriented Parsing Approach: Theory and Application
... In particular in NLP, there has been considerable progress in unsupervised learning during the last few years. The performance of unsupervised parsers has gone up from around 40% unlabeled F -score on the ATIS corpus ...
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State machine of place-labelled Petri net controlled grammars
... controlled grammar is presented by the investigation of subclass of place-labelled Petri net controlled grammar, namely state ...controlled grammar is given, where each transition of place-labelled ...
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Using Contextual Representations to Efficiently Learn Context-Free Languages
... Despite their theoretical bases, these results are still too limited to form the basis for models for natural language. There are two significant limitations to this work: first it uses a very crude measure for ...
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A Context Free Process as a Pushdown Automaton
... a context-free process may have unbounded branching [8] that we need to mimic with our pushdown ...of context-free processes we have bounded branching, and thus we don’t need the forgetfulness ...
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Accurate Context Free Parsing with Combinatory Categorial Grammar
... According to the literature, combinatory cate- gorial grammar has been defined to have a vari- ety of rule systems. These rule systems vary from a small rule set, motivated theoretically (Vijay- Shanker and Weir, ...
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Alphabetic Flat Splicing Pure Context-free Grammar Systems
... of grammar system [3] consisting of several grammars that co-operate according to some well-defined protocol is an established area of study, motivated by the idea of modeling distributed complex ...a ...
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Manually constructed context free grammar for Myanmar syllable structure
... of grammar hierarchy is the pioneering work of Noam Chomsky (Noam Chomsky, ...Chomsky`s grammar is used to describe the grammatical rules of natural ...for grammar for Myanmar ...
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Robust German Noun Chunking With a Probabilistic Context Free Grammar
... probabilistic context- free grammar. A manually developed grammar was semi-automatically extended with robustness rules in order to allow parsing of unrestricted ...probabilistic ...
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Improving Semantic Parsing with Enriched Synchronous Context Free Grammar
... cally focus on the variable-free semantic represen- tations, as shown in Figure 1. On the target side, we convert these meaning representations to series of strings similar to NL. To do so, we simply take a ...
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