Báo cáo khoa học: "Grammatical Error Correction with Alternating Structure Optimization" pot

... learner text. 5 Alternating Structure Optimization This section describes the ASO algorithm and shows how it can be used for grammatical error correction. 5.1 The ASO algorithm Alternating Structure ... June 19-24, 2011. c 2011 Association for Computational Linguistics Grammatical Error Correction with Alternating Structure Optimization Daniel Dahlmeier 1 and Hwee Tou N...

Ngày tải lên: 17/03/2014, 00:20

... functional roles, e.g. subject), and given a sentence with verbs, (auxiliary, modal, finite, non-finite, ), and chunks, ( , ), label all pairs ( ) with a grammatical role 2 . In this paper, we are ... as a filter operat- ing upon the output of a statistical classifier. The typical errors being made by classifiers with only local decisions are: a constituent is assigned to a grammatical role...

Ngày tải lên: 17/03/2014, 22:20

... that re- gards the pseudo-errors and the real-errors as the source and the target domain, respectively, so that the pseudo-errors better match the real-errors. 2 Error Correction by Discriminative Sequence ... preposition/article error correction in English. For English error correction, many stud- ies employ classifiers, which select the appropriate prepositions/articles, by restri...

Ngày tải lên: 19/02/2014, 19:20

... word sets that do not agree with the thesaurus as word sets with a thematic relation. 3. Experiment In our experiment, we used domain-specific Japa- nese documents within the medical domain ... terms from them, and removed word sets with a taxonomical relation from them with the MeSH thesaurus in order to obtain the rest 847 word sets as word sets with a thematic relation. 4...

Ngày tải lên: 17/03/2014, 04:20

... systems. Hypothesis mixture decoding (Duan et al., 2011) performs a second decoding process where the search space is enriched with new hypotheses composed out of existing hypotheses from ... develop a novel structured label propagation method for structured learning problems, such as machine translation. Note that, the structured label propagation can be applied to other structured...

Ngày tải lên: 23/03/2014, 14:20

... recognizer. We compose this with each of the templates. Some num- ber of analyses result from each composition. That is, a single template may not compose with the word, may compose with it in a unique ... com- pose with the word in several ways. Each of the suc- cessful compositions produces a finite state recog- nizer with brackets surrounding the stem. We use a script to collapse...

Ngày tải lên: 31/03/2014, 00:20

... semi-supervised or even unsupervised approaches, when given enough knowledge about the structure of the problem, will be competitive with the supervised models trained on large training sets. However, in the ... a way to label, along with the current learned model, unlabeled examples. Given a small amount of la- beled data and a large unlabeled pool, our frame- work initializes the mode...

Ngày tải lên: 31/03/2014, 01:20

... with each other. ∑ = ∈ i cd i i d c C 1 (1) ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ ⋅ = 2 2 maxarg i i i Cd Cd c c (2) For example, the single-topic documents involved with “sport” or “education” can meet with ... assumption that the documents in one category should share some similarities with each other. However, this hypothesis is often violated by ECOC on the grounds that it ignores the similar...

Ngày tải lên: 20/02/2014, 12:20

... concentration of Cu 2+ , with optimum activity A C B 5′ 5′ Fig. 1. Sequence and predicted secondary structures of original DNAzymes and the reconstructed DNAzyme. (A) Sequence and secondary structure of ... allosteric DNAzyme with dual RNA-cleaving and DNA-cleaving activities is very challenging. We used an in vitro-selected pistol-like (PL) DNAzyme as a DNA scaffold for designing a DNA...

Ngày tải lên: 16/02/2014, 15:20

... protein with cer- tain response elements can be controlled by changes in DNA topology inducing formation of non-B DNA structures within the binding sites [11,12]. Interactions of p53 with DNA ... cisplatin DNA treatment correlated with the occurrence of sequence motifs forming stable bifunc- tional adducts with the drug (namely, GG and AG doublets) within the target sites. Binding of...

Ngày tải lên: 19/02/2014, 05:20