Tài liệu Báo cáo khoa học: "A Gibbs Sampler for Phrasal Synchronous Grammar Induction" docx

... AFNLP, pages 782–790, Suntec, Singapore, 2-7 August 2009. c 2009 ACL and AFNLP A Gibbs Sampler for Phrasal Synchronous Grammar Induction Phil Blunsom ∗ pblunsom@inf.ed.ac.uk Chris Dyer † redpony@umd.edu Trevor ... Koehn et al. (2003). We develop a novel Gibbs sampler to perform inference over the latent synchronous derivation trees for our training instances. The sampler...

Ngày tải lên: 20/02/2014, 07:20

... GRAMMARS The grammars which are supported by the parser are a subset of those for Structure Unification Grammar. These grammars are for the most part lexicalized. Each lexicalized grammar entry ... Adjoin- ing Grammar, Description Theory (Marcus et al., 1983), Combinatory Categorial Grammar, Lexi- cal Functional Grammar, and Head-driven Phrase Structure Grammar. An SUG gr...

Ngày tải lên: 20/02/2014, 21:20

... incu- bated for 4 days with each of the peptides (10 lm), and cells were fixed and used for immunocytochemical analyses. Immunocytochemistry Neurons were fixed in 4% paraformaldehyde for 20 min at ... to transformed Ca 2+ -competent E. coli cells (ER2566) by heat shock. The transformed cells were spread on LB agar plates containing ampicillin (50 mgÆL )1 ), single colonies were picked fo...

Ngày tải lên: 18/02/2014, 13:20

... labelled information for training. Our sys- tem extracts transliteration pairs in an unsupervised fashion. It is also able to utilize labelled information if available, obtaining improved performance. We ... of the Association for Computational Linguistics, pages 469–477, Jeju, Republic of Korea, 8-14 July 2012. c 2012 Association for Computational Linguistics A Statistical Model for...

Ngày tải lên: 19/02/2014, 19:20

... a considerable engineer- ing effort, yet there is very limited avail- ability of off-the shelf tools for researchers whose interests are not in coreference, or for researchers who want to concentrate ... standoff format of the MMAX2 annotation tool (M ¨ uller and Strube, 2006) with MiniDiscourse, a library that efficiently imple- ments a subset of MMAX2’s functions. Using a generic format...

Ngày tải lên: 20/02/2014, 09:20

... same form as the experimentalists so we in- herit their careful design. In this study, a total of 76 sentences were tested: 10 for lexical category ambiguity, 12 for RR am- biguity, 20 for PP ... different sources of information is not transparent. Nevertheless, Kim et al. (2002) pro- vides a future direction for the current study and a starting point for considering what informatio...

Ngày tải lên: 20/02/2014, 11:21

... allows that use of future information in ad- dition to past information. The pipeline model nat- urally allows access to all the past information. Algorithm 3 Pseudo code for the look ahead algo- rithm. ... rightmost S action taken before a non-S action happens. Note that it is possible that there is a relation between a and b, but we can- not perform R or L now. Therefore, we should consid...

Ngày tải lên: 20/02/2014, 12:20

... general information about the system’s components, a description and time- stamp for each system event and user event, names and timestamps for the system-recorded sound files, and timestamps for ... Figure 5 System architecture The underlying database of movie information is stored in XML format. When a new database is available, a Grammar Compiler component ex- tracts and nor...

Ngày tải lên: 20/02/2014, 12:20

... only for N’s small enough to yield non-zero P(n) scores. For test corpora of reasonable size, the metrics are usually well-defined for N≤4. The BLEU proposed by Papineni et al. (2002) for ... recall scores for increasingly longer n-grams. For test corpora of reasonable size, the metrics are usually well- defined for N≤4. The ROUGE metric proposed by Lin and Hovy (2003)...

Ngày tải lên: 20/02/2014, 16:20

... in- tend for it to generalize and encapsulate best practices, and serve as a testbed for new practices. Dyna is now be- ing used for parsing, machine translation, morphological analysis, grammar ... used for parsing, syntax-based machine translation, morphological analysis, grammar induction, and finite-state operations. It is well known that various parsing algorithms for CFG an...

Ngày tải lên: 20/02/2014, 16:20