Báo cáo khoa học: "Phylogenetic Grammar Induction" pptx

... Experiments in parallel-text based grammar induction. In Association for Computa- tional Linguistics. G. Kuzman, J. Gillenwater, and B. Taskar. 2009. De- pendency grammar induction via bitext projection constraints. ... A. Smith. 2009. Shared logistic normal distributions for soft parameter tying in un- supervised grammar induction. In North American Chapter of the Association for Compu...

Ngày tải lên: 30/03/2014, 21:20

... for learning a grammar to automatically parse text. The method can be used to obtain high parsing accuracy with a very small training set. Instead of learning a traditional grammar, an or- ... corpus. Unlike other recent attempts at automatic grammar induction that rely heav- ily on statistics both in training and in the re- sulting grammar, our learner is only very weakly stati...

Ngày tải lên: 31/03/2014, 06:20

... has opened up the pos- sibility of grammar induction through par- tial transfer across bitext. We consider generative and discriminative models for dependency grammar induction that use word-level ... Hwa et al. (2005) explore transfer of deeper syntactic structure: dependency grammars. Dependency and con- stituency grammar formalisms have long coex- isted and competed in linguistics, e...

Ngày tải lên: 20/02/2014, 07:20

... ducing grammars from sparsely labeled training data (e.g., only higher-level constituent labels), we propose an adaptation strategy, which pro- duces grammars that parse almost as well as grammars ... a directly in- duced grammar parses test sentences with 66% accuracy, whereas an adapted grammar parses with 91% accuracy, which is only 2% lower than the score of a grammar ind...

Ngày tải lên: 20/02/2014, 19:20

Ngày tải lên: 19/02/2014, 16:20

Ngày tải lên: 17/03/2014, 04:20

... (called NIGEL). The grammar used in NIGEL is a Systemic Grammar of English of the type develol:~d by Michael Halliday • - see below for references. For present DurOoses the grammar, the lexic,n ... implementing a grammar written in the systemic notation. Before turning to the lexico, part of lexicogrammar, I will give an example of the toplevel structure of a sentence generated b...

Ngày tải lên: 17/03/2014, 19:20

... has been achieved. 4 Grammar development with XCDG The development of a parsing grammar based on declarative constraints differs fundamentally from that of a derivational grammar, because its ... alternative analyses and their sta- tus under the current grammar. 1 Introduction For parsing real-life natural language reliably, a grammar is required that covers most syntactic structures...

Ngày tải lên: 23/03/2014, 19:20

Ngày tải lên: 19/02/2014, 19:20

Ngày tải lên: 20/02/2014, 09:20