Tài liệu Báo cáo khoa học: "A LOGICAL SEMANTICS FOR FEATURE STRUCTURES" pdf

... Domain of Descriptions: Logical Formulas We now define the domain FML of logical for- mulas which describe feature structures. Figure 3 defines the syntax of well formed formulas. In the following ... operators. Note that no information is added or subtracted by rewriting the feature matrix of Figure 1 as a logical formula. These two forms may be regarded as notational vari...

Ngày tải lên: 21/02/2014, 20:20

... al.’s features, outperforming JAVARAP on pronoun resolution, as well as the Soon et al. reimplementation of Uryupina (2006). Using a specialized tagger for ACE mentions and an extended feature ... allowing for their independent develop- 10 Figure 2: Example system configuration ment. The set of feature extractors that the system uses is set in an XML description file, which allows for...

Ngày tải lên: 20/02/2014, 09:20

... 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 ... peptides should lead to aggregation and formation of inclusion bodies, and that Ab would be less susceptible to degradation in this form. More- over, the formation of inclusion bodies enable...

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

... p null = 10 −10 for this value in the experiments we report below. 784 either φ P z i for phrase pairs or φ null for single lan- guage phrases. We choose Dirichlet process (DP) priors for these parameters: φ P z i ∼ ... proce- dure for each sentence pair is non-trivial, prov- ing NP-complete for learning phrase based models (DeNero and Klein, 2008) or a high order poly- nomial (O(...

Ngày tải lên: 20/02/2014, 07:20

... children for each word). Note that State changes when a pre- diction is made and that the features extracted for the action classifier also depend on State. The search algorithm will perform a search ... 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 ah...

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 ... Open-ended tasks prompted users to search for any type of information with any input modality. The tasks in the two sets paralleled each other. For example, if one set of tasks as...

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

... time: we 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, ... 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 and o...

Ngày tải lên: 20/02/2014, 16:20

... is a series of sentences to be analyzed. An interpretation for a text would be a se- ries of parse trees and logical forms, one for each sentence. An analogous view is often taken of dialog; ... take the ban- um the oranges, three constituents would be produced, one for urn, another for take the ban-, and a third for take the oranges. Another complicating factor of dialog...

Ngày tải lên: 20/02/2014, 19:20