Báo cáo khoa học: "Unary Constraints for Efficient Context-Free Parsing" docx

... Association for Computational Linguistics:shortpapers, pages 676–681, Portland, Oregon, June 19-24, 2011. c 2011 Association for Computational Linguistics Unary Constraints for Efficient Context-Free ... applying unary constraints (UC) and cell-closing (CC) constraints (Roark and Hollingshead, 2008) to various parsers. with the additional application of unary constraints. Fu...

Ngày tải lên: 17/03/2014, 00:20

... protein complex formation is crucial for siRNA channelling into RISC and mediating the transition between the initiation and execution phases of RNAi. Ago proteins are key components of RISC responsible for ... effect. Silencing of viral RNA was observed to be most efficient in cases of long dsRNA (89%), long dsDNA (84%), and siRNA (89%), and less efficient for siDNA (70%), whereas lo...

Ngày tải lên: 16/03/2014, 02:20

... only limited and local context information for learning and prediction, they often fail to en- force simple yet important global linguistic con- straints that exist for most languages, e. g. that there ... case syn- cretism for the function labeller. Section 3 de- 2 Table 6 shows that for our data a model with merged category and function labels (but without hard constraints! ) perfo...

Ngày tải lên: 17/03/2014, 00:20

... of the Association for Computational Linguistics, pages 497–505, Jeju, Republic of Korea, 8-14 July 2012. c 2012 Association for Computational Linguistics Dependency Hashing for n-best CCG Parsing Dominick ... Introduction Reranking techniques are commonly used for im- proving the accuracy of parsing (Charniak and John- son, 2005). Efficient decoding of a parse forest is infeasible...

Ngày tải lên: 19/02/2014, 19:20

... prepositions and if there are how the process of their word formation should be accounted for as their characteristics are not as straight forward as it is expected from other compound categories. ... completely behaving as compounds, it is doubtful that the process of word formation is a morphological one. The analysis put forward by this paper proposes “incorporation” by which an...

Ngày tải lên: 08/03/2014, 02:21

... and Giorgio Satta. 1999. Efficient pars- ing for bilexical context-free grammars and head- automaton grammars. In Proceedings of the 37th Annual Meeting of the Association for Computa- tional Linguistics ... learning methods for non-deterministic split head- automata grammars, a powerful hidden- state formalism for dependency parsing. We present a learning algorithm that, like othe...

Ngày tải lên: 08/03/2014, 21:20

... 02-21 for training, 22 for development, and 23 for testing. Both DP and non-DP parsers use the same feature templates in Table 1. For Secs. 4.1-4.2, we use a baseline model trained with non-DP for ... bits of information from only the last (d + 1) trees on stack instead of the whole stack, because they provide all the relevant information for the features, and thus determine the c...

Ngày tải lên: 17/03/2014, 00:20

... avoid the unwanted bias toward small clusters. For cluster , the weight for sample is proportional to . Weight by Performance: The idea of weight by performance is to focus the model on its weakness when ... result shows that for about the same pars- ing accuracy, we only need to annotate a third of the samples as compared to the usual random selection method. 1 Introduction A prerequis...

Ngày tải lên: 17/03/2014, 08:20

... strategy for subdialogues repairing depart-city be RA and Agent B's repair strat- egy for depart-city be RB. Then using the performance equation above, predicted performance for RA is: Performance(Ra) ... be compared? Given values for and wi, performance can be calculated for both agents 276 using the equation above. The mean performance of A is 44 and the mean performa...

Ngày tải lên: 17/03/2014, 23:20

... important model for eukaryotic signal-responsive transcription factors for several decades, there is presently little mechanistic or structural information available regarding how Ste12 forms multimers ... [35]. URA + transformants were allowed to grow nonselectively on yeast extract peptone dextrose for 3 days to allow rear- rangement of the disintegrator, prior to streaking for sing...

Ngày tải lên: 06/03/2014, 22:21