Báo cáo khoa học: "Effective Parsing With Generalised Phrase Structure Grammar" docx

... Effective Parsing With Generalised Phrase Structure Grammar Allan Ramsay Cognitive Studies Program, University of Sussex Brighton, BN1 9QN, England Abstract Generalised phrase structure ... such guidance it becomes possible to deal even with text containing unknown or ambiguous words with very little search. I. Generalised Phrase Structure Grammar There has...

Ngày tải lên: 01/04/2014, 00:20

... a pattern with which to expand it and then filling out that pattern with words drawn from a unigram distribution. This kind of coupled generative process can be naturally formalized with tree ... the rich literature on tree automata. This paper makes the connection concrete with a tree transducer based semantic parsing model and suggests that other models can be interpreted in a simi...

Ngày tải lên: 19/02/2014, 19:20

Ngày tải lên: 20/02/2014, 18:20

... phrase which starts with “a” has no adjunct. The tree (d) represents that the noun phrase has an adjunct or is a conjunct of a coordinated noun phrase. The tree (e) represents that the noun phrase ... the noun phrase with an adjunct is a conjunct of a coordi- nated noun phrase. The partial parse trees (d) and (e) are the instances of partial parse trees which have left-recursive...

Ngày tải lên: 17/03/2014, 02:20

... semantic parsing, we describe here the method of structure representation, the feature mapping, the loss function, and the maximization algorithm. 3.1.1 Structure representation A tree structure ... framework on the domain of semantic parsing shows ad- vantages in comparison with the original large margin methods. 1 Introduction Natural language semantic parsing is an interest- i...

Ngày tải lên: 17/03/2014, 04:20

... Phonology LF-Movement D -structure D-st~'ucture S -structure S -structure not delayed S -structure Figure 6: The Control Strategy of PAD2. With this control strategy the parsing process proceeds ... utterance, D- structure, S -structure, PF and LF. To a first approximation, D -structure represents configurationally the thematic or predicate- argument structure of...

Ngày tải lên: 17/03/2014, 20:20

... dependency parsing. In Proceedings of the 8th International Workshop on Parsing Technolo- gies (IWPT), pages 149–160. Joakim Nivre. 2008. Algorithms for Deterministic Incremental Dependency Parsing. ... are less conclusive, with improvements over the di- rected versions in five out of the eight languages. The improvements in LAS obtained with label- based reconstruction over directed...

Ngày tải lên: 17/03/2014, 22:20

... and conclusions. 2 Fast dependency parsing and wide-coverage HPSG parsing 2.1 Data-driven dependency parsing Because we use dependency parsing as a step in deep parsing, it is important that we ... dependency and HPSG parsing approaches in section 2. In section 3, we present our framework for HPSG parsing with shallow dependency constraints, and in section 4 we 624 Figure 1: HP...

Ngày tải lên: 23/03/2014, 18:20

... pairs. During parsing with both the NN method and the MF method, we used beam search with a post-word beam of 10. Increasing the beam size beyond this value did not significantly effect parsing accuracy. For ... need- ing to have data labeled with those features in ad- vance. Instead, a labeling with these features can be induced as part of the training process. The difficulty with...

Ngày tải lên: 23/03/2014, 18:20

... algo- rithm with neither of the two refinements presented; with just early update; and with both. Early update makes 1 2 3 4 5 6 82 83 84 85 86 87 88 Number of passes over training data F−measure parsing ... Abstract Description of Incremental Parsing This section gives a description of the basic incremental parsing approach. The input to the parser is a sentence x with length n....

Ngày tải lên: 23/03/2014, 19:20