Báo cáo khoa học: "An Ensemble Model that Combines Syntactic and Semantic Clustering for Discriminative Dependency Parsing" pptx

... many algorithms that have such a framework, which include (Yamada and Mat- sumoto, 2003) for English and (Kudo and Mat- sumoto, 2002; Iwatate et al., 2008) for Japanese. Therefore, effective ... and have to use a parsing algorithm that can be trained from incompletely annotated sentences. Therefore, it is difficult to use some of probabilistic models for parsing. 4 5 Active L...

Ngày tải lên: 20/02/2014, 04:20

... 5-gram model. For GIZA ++, we use the standard training reg- imen up to Model 4, and combine alignments with grow-diag-final -and. For the proposed models, we train for 100 iterations, and use the ... noted that forcing align- ments smaller than the model suggests is only used for generating alignments for use in heuristic extrac- tion, and does not affect the training...

Ngày tải lên: 20/02/2014, 04:20

... higher. Figure 1 demonstrates these phenomena for two leading models, Collins (1999) model 2, a generative model, and Charniak and Johnson (2005), a reranking model. The parser adaptation scenario is ... parsing models only. Ngai and Yarowsky (2000) used an ensemble based on bagging and partitioning for active learning for base NP chunking. They select top items with- out...

Ngày tải lên: 20/02/2014, 12:20

... iterations of model 1, 5 of Hmm, 3 of model 3, 3 of model 4) and also tried with increased number of iterations for each model (up to 10 per model) . We are aware that the score we obtained for model ... data and with no possibilities for fine-tuning; therefore the comparison should be fair. The comparison show that performance-wise, the monolink algorithm is between t...

Ngày tải lên: 22/02/2014, 02:20

... we showed that cells had a greater need for pyruvate during hypoxia. Pyruvate decreased the number of DNA breaks, and might favor DNA repair. We demonstrated that pyruvate was a precursor for the ... during and after hypoxia. In the present study, we showed that cells had a greater need for pyruvate during hypoxia. Pyruvate decreased DNA breaks and might favor DNA repair. We...

Ngày tải lên: 18/02/2014, 16:20

... preference ranking among com- petitors for the same syntactic slot. For ex- ample, we have shown in (Dahan-Netzer and Elhadad, 1998b) that the semantic relations that can be realized by a construct ... and existing analyses about possessives and partitives in Hebrew and English. We then present the input fea- tures we have designed to cover possessives and partitive...

Ngày tải lên: 08/03/2014, 06:20

... suggesting that LeTx could potentially be used as a cancer therapeutic [21]. We performed random mutagenesis on the catalytic domain of LF, and screened the resulting mutants for ones that were ... 10 )8 M PA and the indicated concentrations of either wild-type (WT) LF or LF-K518E ⁄ E682G for 1 h, and then treated with lipopolysaccharide for 15 min. Cellu- lar lysates were mad...

Ngày tải lên: 16/02/2014, 09:20

... Note that kappa statistics adjust for the accuracy that would be expected by majority-baseline chance; a kappa statistic of zero indicates that the classifier performed equal to chance, and ... mod- el for tutorial dialogue, and the results demonstrate that facial expressions hold great promise for dis- tinguishing the pedagogically relevant dialogue act REQUEST FOR FE...

Ngày tải lên: 20/02/2014, 04:20

... mention-pair model for coref- erence resolution cannot capture information beyond mention pairs for both learning and testing. To deal with this problem, we present an expressive entity-mention model that ... (entity- mention model) a good classifier learner for the mention-pair model. The fifth line of Table 4 is for the ILP based entity- mention model (described in Secti...

Ngày tải lên: 20/02/2014, 09:20

... word form were subjected to several restric- tions: • For nouns, generated forms had to match the original form for number. • For verbs, generated forms had to match the original form for tense and ... negation. • For adjectives, generated forms had to match the original form for degree of comparison and negation. • For pronouns, excepting relative and interrog- ative pron...

Ngày tải lên: 07/03/2014, 22:20