Báo cáo khoa học: "A Knowledge-Based Nature Language Understender " ppt

... 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 ... proposed models. The details of this new language processor will be presented in the following sections. 2. The Proposed Language Processor The language processor proposed in this...

Ngày tải lên: 08/03/2014, 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 ... n-gram language models. Experiments verify that our model gives cross entropy results superior to interpo- lated Kneser-Ney and comparable to mod- ified Kneser-Ney. 1 Introduction Probab...

Ngày tải lên: 17/03/2014, 04:20

... A FLEXIBLE NATURAL LANGUAGE PARSER BASED ON A TWO-LEVEL REPRESENTATION OF SYNTAX Leonardo Lesmo and Pietro Torasso ... garden path. INTRODUCTION The problem of performing an accurate synta~ tic analysis of Natural Language sentences is still challenging for A.I. people working in the field of N.L. interpretation ... ordering. ATNs are po E erful formal tools able to analyze type-O...

Ngày tải lên: 18/03/2014, 02:20

... natural language interfaces has been going on for the past 15 years. The primary direction that this re- search has taken is to improve and extend the capabilities and coverage of natural language ... natural language interfaces the ability to understand larger and larger classes of input sentences. Tennant (1980) is one of the few attempts to consider the problem of evaluating na...

Ngày tải lên: 21/02/2014, 20:20

... familiar and, for the most part, uncontroversial c|~Lm~ s about the nature of grammatical description and of human parsing of natural language. These claims and assumptions can be briefly summarised ... centre recursion cannot, is consistent with this, for any (CF) language with bounded centre embedding is also a finite state language. However, when we turn to full parsing, as opp...

Ngày tải lên: 22/02/2014, 09:20

... Foundation under Grant No. (#IIS-9732388), and was carded out at the 1998 Workshop on Language Engineering, Center for Language and Speech Processing, Johns Hopkins University. Any opinions, findings, ... text. 1 Introduction Much of the recent research on statistical parsing has focused on English; languages other than En- glish are likely to pose new problems for statisti- cal m...

Ngày tải lên: 08/03/2014, 06:20

... translator is imagined to use in converting a sentence from one language (the input language) into a new language (the output language) . This process is assumed to consist of (1) transferring ... translation in the output language. Teletype- writers, operated by typists with no knowledge of either language, could be used to supply COMPUTING MACHINES FOR LANGUAGE TRANSLATION...

Ngày tải lên: 16/03/2014, 19:20

... are universal. This implies in principle that when we parse comparable sen- tences in different languages, we always build the same tree. Word order differences are distinguished by the choice

Ngày tải lên: 17/03/2014, 09:20

... words in the source language or in the target language. In our method, we automati- cally detect the collocated words in sentences and 1042 their translation orders in the target languages, which ... Chinese-to-English phrase-based translation model. And the SRI language modeling toolkit (Stolcke, 2002) is used to train a 5-gram language model on the English sentences of FBIS co...

Ngày tải lên: 30/03/2014, 21:20

... proposed model theory of natural language, one that appears to be more compatible with the needs of AI than previous theories EI]t is of interest to work in natural -language processing for the ... reinforced by philosophical considerations which point toward the use of language to convey information as the central use of language - hence, to assertlng as the central kind of ut...

Ngày tải lên: 31/03/2014, 17:20