Tài liệu Báo cáo khoa học: "An Unsupervised Model for Joint Phrase Alignment and Extraction" ppt

... discrimi- native model that performs joint word alignment and phrase extraction, and found that joint estimation of word alignments and extraction sets improves both word alignment accuracy and translation ... Association for Computational Linguistics, pages 632–641, Portland, Oregon, June 19-24, 2011. c 2011 Association for Computational Linguistics An Unsupervised...

Ngày tải lên: 20/02/2014, 04:20

... boundaries, the “ ” stand for occurrences of any words and punctuation marks, the square brackets stand for text span boundaries, and the other words and punctuation marks stand for the cue phrases that ... of these relations and in pro- viding definitions for them (Mann and Thompson, 1988; Hobbs, 1990; Martin, 1992; Lascarides and Asher, 1993; Hovy and Maier, 1993; Knott...

Ngày tải lên: 20/02/2014, 21:20

... HTH functions could be performed by both isoforms, although for antenna development only full-length HTH was sufficient. It may therefore be that Meis2e- like proteins are functional for some activities, ... isoform are present in pig, cow, and zebrafish. Despite the overall conservation between Meis paralogs, there is no evidence for alternative splicing of Meis1 and Meis2 creating a...

Ngày tải lên: 16/02/2014, 15:20

... DNAzyme with dual RNA-cleaving and DNA-cleaving activities Dazhi Jiang*, Jiacui Xu*, Yongjie Sheng, Yanhong Sun and Jin Zhang Key Laboratory for Molecular Enzymology and Engineering of Ministry ... DNAymes; engineering DNA- zyme-based sensors for Mg 2+ [9,10], Cu 2+ [11], Hg 2+ [12,13], Pb 2+ [14], and UO 2 2+ [15]; and constructing molecular logic gates and nanomotors [16–20]...

Ngày tải lên: 16/02/2014, 15:20

... distribu- tion and require supervised/semi-supervised infor- mation for learning. We propose a flexible genera- tive model for transliteration mining usable for both unsupervised and semi-supervised ... present a novel model of transliteration min- ing defined as a mixture of a transliteration model and a non-transliteration model. The transliteration model is a joint s...

Ngày tải lên: 19/02/2014, 19:20

... word. Usually, a candidate monosemous word for a morpheme stands for part of the linguistic func- tion of the ambiguous word, thus we need to choose several morphemes to stand for one sense. The ... in semantic analysis and plays as a basis for much related research. For example, some researchers cluster the contexts of ambigu- ous words for WSD, which shows good perform-...

Ngày tải lên: 20/02/2014, 12:20

... generative model number 2 and the Charniak and Johnson (2005) reranking model. For the first we used a reimplementation (?). We performed experiments with each model in two scenarios, in-domain and parser ... higher. Figure 1 demonstrates these phenomena for two leading models, Collins (1999) model 2, a generative model, and Charniak and Johnson (2005), a reranking model...

Ngày tải lên: 20/02/2014, 12:20

... competitive and satisfactory performance in many classification tasks, such as part-of-speech (POS) tagging (Gimenez and Marquez, 2003), shallow parsing (Kudo and Matsumoto, 2001, 2004; Lee and Wu, ... Yue-Shi Lee Dept. of Computer Science and Information Engineering Graduate Institute of Net- work Learning Technology Dept. of Computer Science and Information Engineering...

Ngày tải lên: 20/02/2014, 12:20

... of expectation-maximization algorithms. The DOP model has also been tested as a model for human sentence processing (Bod 2000d). This paper presents ongoing work on DOP models for Lexical-Functional Grammar representations, ... We therefore removed all f-structure units from the fragments, thus yielding a Tree-DOP model, and compared the results against the full LFG-DOP model (us...

Ngày tải lên: 20/02/2014, 18:20

... task- driven, computational approaches and descriptive linguistic ones. On corpora validation becomes more and more important for theoretical models, and the accuracy of these models can be evalu- ated either ... analy- sis models and methodological concerns. Finally, when other platforms usually enforce the use of a dedicated document format, LinguaStream is able to process any XML...

Ngày tải lên: 22/02/2014, 02:20