Báo cáo khoa học: "Learning Better Rule Extraction with Translation Span Alignment" pptx

... best derivation to produce translation span align- ments that are used to improve the extraction of translation rules. Translation span alignments are optimized by the translation model. Secondly, ... alignment) link can pre- vent some desirable syntactic translation rules from extraction, which can in turn affect the quality of translation rules and translation perform...

Ngày tải lên: 23/03/2014, 14:20

... the results tables refers to orig- inal space with features occurring more than 20 times. We also ran experiments with original set of features (without any thresholding) and the results were ... be- tween metric learning and label inference; with output of label inference used during next round of metric learning, and so on. IDML starts out with the assumption that ex- isting supervi...

Ngày tải lên: 30/03/2014, 21:20

... separate rule sets (with or without intona- tion features as predictors) are learned as before and stored in rulebasel and rulebase2 respec- tively. A rule interpreter is designed to parse the rules ... Break Index Pitch Accent Phrase Accent Boundary tone Accuracy rule condl- Accuracy rule condi- Accuracy rule condi- Accuracy rule condl- tlon~ ~ tlon~ ~ tion~ # tion~ 1 8...

Ngày tải lên: 08/03/2014, 05:21

... clas- sification if they fall outside the beam. For com- parison purposes, we run our novel extraction al- gorithm with and without the document-level pre- filtering step. The results in Section 4 show that the ... in- dicates that S and T are translations of each other. w ∈ R n is a weight vector obtained during train- ing. f(c, S, T ) is a feature vector where the fea- tures are co-indexe...

Ngày tải lên: 17/03/2014, 02:20

... further improved with a bootstrapping process that learns extraction patterns. In our experiments, however, we apply only the rule- based classification step, since the extraction step cannot be implemented without tools ... bilingual dictionary and the translation of the entire phrase is difficult to reconstruct from the translations of the individual words. To address this problem, w...

Ngày tải lên: 17/03/2014, 04:20

... Introduction Relation extraction is an important information extraction task in natural language processing (NLP), with many practical applications. The goal of relation extraction is to detect ... different lexical features. 3 Background 3.1 Relation Extraction One of the well defined relation extraction tasks is the Automatic Content Extraction 1 (ACE) program sponsor...

Ngày tải lên: 30/03/2014, 21:20

... entries of the rule table for statistical machine translation. The rule ta- ble is filtered by monolingual key phrases, which are extracted from source text us- ing a technique based on term extraction. Experiments ... hierarchical translation systems often suffer from a large rule table (the collection of rules), which makes decoding slow and memory-consuming. In the training proce...

Ngày tải lên: 31/03/2014, 00:20

... context-free. Proof. We construct a context-free grammar with exactly those rules in the finite set of instantiations of the CCG rule schemata along with context- free rules corresponding to the lexicon. This CFG ... classes: (A) Rule Restriction to a Finite Set The rule schemata in the schema classes of a CCG are limited to a finite number of instan- tiations. (B) Rule Restrictions...

Ngày tải lên: 20/02/2014, 04:20

... 2, the algorithm uses heuris- tic rules to search the parse tree for the antecedent, and will act as a good baseline to compare with the learned-based approach with the structured fea- ture. As ... rates for the pronouns with the clos- est antecedent occurring in the same sentence, one-sentence apart, and two-sentence apart. Ta- ble 3 compares the learning systems with/ without the str...

Ngày tải lên: 20/02/2014, 11:21

... with multiple transcriptions of the same content, we are again presented with new op- portunities. In this paper we compare some well known techniques for combination of retrieval re- sults with ... content by substantially differ- ent recognition systems. Topic-averaged re- trieval effectiveness better than any previously reported for the same collection was obtained, and even larger...

Ngày tải lên: 08/03/2014, 01:20