Báo cáo khoa học: "Graph-structured Stack and Natural Language Parsing" ppt

... to go and that there are innumerable unresolved issues that will continue to require research beyond the foreseeable future. Our understanding of NL has merely scratched the surface, and it ... PROSPECTS mOR PRACTICAL NATURAL LANGUAGE SYSTEMS Larry R. Harris Artificial Intelligence Corporation Newton Centre, ~ass. ... fitting of the NL component to the exact requirements of t...

Ngày tải lên: 21/02/2014, 20:20

... reasonable theory of natural language which unquestionably formalizes many actual properties of human language (reference 5, p. 78). Both theoretically and empirically the development and automatic ... into two and only two immediate constituents ( IC). 1 Although all phrase-structure grammars appear to be inadequate in some important respects to the task of handling natura...

Ngày tải lên: 07/03/2014, 18:20

... UNDERSTANDING REPETITION IN NATURAL LANGUAGE INSTRUCTIONS - THE SEMANTICS OF EXTENT Sheila Rock Department of Artificial ... Intelligence,Edinburgh University* 80 South Bridge, Edinburgh EH1 1HN, Scotland, United Kingdom sheilaraisb.ed.ac.uk Introduction Natural language instructions, though prevalent in many spheres of communication, ... of rhubarb (into a tart) and extent...

Ngày tải lên: 17/03/2014, 08:20

... point quantization 1 , N -gram language models are com- pressed into 10 GB, which is comparable to a lossy representation (Talbot and Brants, 2008). 2 N -gram Language Model We assume a back-off N-gram language model ... lossless representation of N -gram is a key issue even for lossy approaches. Raj and Whittaker (2003) showed a general N- gram language model structure and intr...

Ngày tải lên: 20/02/2014, 09:20

... words, their POS tags and also these features of the chil- dren of w 1 and w 2 . We also include the lexicon and POS tags of 2 words before w 1 and 4 words after w 2 (as in (Yamada and Matsumoto, 2003)). The ... of actions and that Step Back is the best choice. Note that, since the ac- tions are the gold-standard actions, the policy af- fects only the number of S actions used, an...

Ngày tải lên: 20/02/2014, 12:20

... precision, 86% recall, and 1.3 crossing brackets per sentence for sentences of 40 words or less, and 91% pre- cision, 90% recall, and 0.5 crossing brackets for sentences between 10 and 20 words in ... Parsing* David M. Magerman Bolt Beranek and Newman Inc. 70 Fawcett Street, Room 15/148 Cambridge, MA 02138, USA magerman@bbn, com Abstract Syntactic natural language par...

Ngày tải lên: 20/02/2014, 22:20

... algorithm of Jim ´ enez and Marzal (2000) and Huang and Chi- ang (2005), referred to hereafter as LAZY, oper- ates by first performing an exhaustive Viterbi in- side pass and then lazily extracting ... algorithm of Klein and Manning (2003), we first introduce notation and review those two algorithms before presenting our new algorithm. 2.1 Notation Assume we have a PCFG 2 G and an...

Ngày tải lên: 07/03/2014, 22:20

... long history of natural language understanding work, semantic and pragmatic constraints are known to be indispensable and are recommended to be represented in some formal way and to be referred ... 63 ambiguous sentences from magazine corpus and 21 ambiguous sentences from IBM correspondence were chosen at random from the sample sentences and their parse trees with probabi...

Ngày tải lên: 08/03/2014, 18:20

... of the 17 languages and the transfer method on 12 of the 17 languages. Most of the gains are ob- tained on non-Indo-European languages, that have little similarity with the source languages. ... language- universal, this distribution can be learned in a supervised fashion from all the training languages. On the other hand, 629 ordering of dependents varies greatly across lan- guages and...

Ngày tải lên: 16/03/2014, 19:20

... Combining Functionality and Ob]ec~Orientedness for Natural Language Processing Toyoakl Nishida I and Shuji Doshita Department of Information Science, Kyoto ... organizing linguistic knowledge in both systematic and flexible fashion. We introduce a purely applicative language (PAL) as an intermediate representation and an object-oriented computation mechanism ... eompositi...

Ngày tải lên: 21/02/2014, 20:20