Báo cáo khoa học: "A Transition-Based Parser for 2-Planar Dependency Structures" pot

... competence and performance phenomena. The remaining constraints imposed at the level of the parser are traditionally treated as performance constraints. For example, the parser& apos;s bounded ... also a simple abstraction operation for SUG descriptions which allows unneeded informa- tion to be forgotten, as will be discussed in the section on the parser design. In an SUG deriv...

Ngày tải lên: 20/02/2014, 21:20

... matter only for unknown words, as the parser is designed to do its own tag- ging, for words that it has seen in training at least 5 times, ignoring any tag supplied with the input. For "unknown" ... allowing all dictionary tags for un- known test words somewhat outperformed the alter- native of using the POS tagger's predictions both for training and for unk...

Ngày tải lên: 08/03/2014, 06:20

... into discussion of the under- lying complexity, for which we unfortunately do not have space here, we give an exter- nal form of a lexical entry for some of the senses of the German verb traeumen. ... PATR-style languages is their lack of facilities for defining new abstractions and expressing linguistic generalisations not foreseen (or even foreseeable) by the language desi...

Ngày tải lên: 22/02/2014, 10:20

... compo- nent describing their functional structure. For the rule for S, for instance, we add an ele- ment describing what the SUBJECT and PRED are for. We could say that the SUBJECT is the theme ... complete formal paraphrase of (1) must include at least as much information as we have given above. In particular, the logical structure of our para- phrases contains essential inform...

Ngày tải lên: 22/02/2014, 10:20

... (1975), have been put forward, all of which have Zipf's law as some special or limiting form. Unrelated to Zipf's law is the lognormal hypothesis, advanced for word fre- quency ... matrix 7 ) defines a uniform distribu- tion (all pi# equal), we immediately have that the expected neighborhood density for length rnl is identical for all targets Yt, while for length m~...

Ngày tải lên: 08/03/2014, 07:20

... computed. However the link weights that perform this computation are the same for all the positions in the sequence. Therefore the infor- mation that was learned for an input and context in one sequence ... pattern for the gestalt inputs is straightforward, since these inputs per- tain to information about the sentence as a whole. Whenever a tag is input to the network, the activ...

Ngày tải lên: 23/03/2014, 19:20

... and target dependency language model (LM) training. 2.2 Dependency parsing Graph-based and transition-based are two predom- inant paradigms for data-driven dependency pars- ing. The MST parser (McDonald ... constructed a string-to -dependency trans- lation platform for comparing non-isomorphic tar- get dependency structures. Specially, we proposed an algorithm for generatin...

Ngày tải lên: 30/03/2014, 17:20

... structure for any nondisjunctive FDL formula, we can represent the parts of a formula which do not contain any disjunction by DGs. DGs are a more compact way of representing the same information ... of the formula is formed by using the commutative law to bring all unconditional conjuncts of the formula together at the front. Of course, there may be no unconditional conjuncts in a for...

Ngày tải lên: 31/03/2014, 17:20

... Dutch results for MaltParser, since MaltParser’s feature model has access to all the information in the CoNLL data format, whereas MSTParser in this experiment only could handle word forms and part-of-speech ... transforma- tion of Nilsson et al. (2006) is not applicable. 4 Parsers The parsers used in the experiments are Malt- Parser (Nivre et al., 2004) and MSTParser (Mc- Donald et al.,...

Ngày tải lên: 17/03/2014, 04:20

... 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