Báo cáo khoa học: "Accurate Unlexicalized Parsing" pot

... American Mathematical Monthly, 65(3):154–170. S. Petrov and D. Klein. 2007. Improved inference for unlexicalized parsing. In Proceedings of NAACL HLT 2007, page 404–411. M. Steedman. 2000. The syntactic ... CCGbank and the grammar used in the Clark and Curran parser. Due to this insight, we investigate the potential of using tools from the probabilistic CFG com- munity to improve CCG parsin...

Ngày tải lên: 20/02/2014, 04:20

... applications of statistical potentials to pre- diction of relative binding energies. The effect of training set composition on potential function performance All knowledge-based potentials face the possibility ... complexes. The statistical potential performs as well as highly optimized physical potential functions in tests of docking decoy discrimination. We anticipate that the performance o...

Ngày tải lên: 18/02/2014, 16:20

Ngày tải lên: 20/02/2014, 04:20

... While our reranking model using generation probability is quite simple, we can easily verify our hypothesis that the two proposed probabilities have an effect on improving the parsing accuracy. We ... rerank the results obtained with the posterior context model. McNemar testing showed that the null hy- pothesis that there is no difference between the ac- curacy of the results obtained with th...

Ngày tải lên: 20/02/2014, 12:20

... of incorrect words in hypothesis ˆ W per word in the true string W. For measurement, we must as- sume prior knowledge of W and the best alignment of the reference and hypothesis strings. 2 Errors ... trigram probabilities. Hall and John- 7 The WER of the hypothesis which best matches the true utterance, i.e., the lowest WER possible given the hypotheses set. Training Size Lattice/List OP WER...

Ngày tải lên: 20/02/2014, 15:21

... lhe potential advanta.qes of an entily-oriented approach from tile point of view of robLmtne.~3 in the face of ungr:¢mmatical input were outlined in the inlrodu(.tion. To exploit this potential ... definition for ros;r!ctc:l d'm;cJn I~ng~.~Ua:~. EnLity.arie,~ted parsh;g I',.~.s the potential to provide better parsing robustness Lhan more traditional semantic gramn~;]r techniqu...

Ngày tải lên: 21/02/2014, 20:20

... expectation-based spelling correcter must be invoked from within the morphological decomposition routines on potentially misspelt roots or inflexions. 2.4. Incorrect segmentation Input typed to a natural ... ATNs [27], the syntactic and semantic parts of the grammar are kept separate, thus giving the potential for a higher d~gree of interpretivem:ss in using the semantic information. H...

Ngày tải lên: 21/02/2014, 20:20

Ngày tải lên: 21/02/2014, 20:20

... reduction in our accu- racy indicating that the unlexicalized models are quite effective, but this also m ay hint that a larger treebank with unlexicalized modeling may not be useful for improving ... sparseness problem which is especially acute for Turkish. We have also been encouraged by the success of the unlexicalized parsers reported recently (Klein and Manning, 2003; Chung and Rim...

Ngày tải lên: 22/02/2014, 02:20

... be partitioned into two classes: paratactic and hypotactic. Paratactic relations are those that hold be- tween spans of equal importance. Hypotactic relations are those that hold between a ... 1993; Knott, 1995; Fraser, 1996) to create an initial set of more than 450 potential dis- course markers. For each potential discourse marker, we then used an automatic procedure that extracted .....

Ngày tải lên: 22/02/2014, 03:20