Tài liệu Báo cáo khoa học: "Robust Conversion of CCG Derivations to Phrase Structure Trees" pdf

... Linguistics Robust Conversion of CCG Derivations to Phrase Structure Trees Jonathan K. Kummerfeld † Dan Klein † James R. Curran ‡ † Computer Science Division ‡ e -lab, School of IT University of California, ... inconsistencies. Clark and Curran (2009) developed a CCG to PTB conversion that treats the CCG derivation as a phrase structure tree and applies hand-craf...

Ngày tải lên: 19/02/2014, 19:20

... effectiveness of the proposed method. 2 Extraction of Japanese Named Entity 2.1 Task of the IREX Workshop The task of NE extraction of the IREX workshop (Sekine and Eriguchi, 2000) is to recognize ... of NLP (Tjong Kim Sang, 1999). This representation uses the following three labels. B Current token is the beginning of a chunk. I Current token is a middle or the end of a chu...

Ngày tải lên: 20/02/2014, 09:20

... first crystal structure of TK1-type enzymes of human and myco- plasmic origin [14], the feedback inhibitor dTTP was bound in the substrate pocket, similar to the binding of dTTP to the D. melanogaster ... B (2004) Effect of valine 106 on structure function rela- tion of cytosolic human thymidine kinase. Kinetic prop- erties and oligomerization pattern of nine substitution mu...

Ngày tải lên: 18/02/2014, 12:20

... a-helix and 8% d istorted a-helix which a dds up to 13% of a-helical structures. Regular b-sheet structure was 23% and distorted b-sheet was 13%, yielding a total of 36% b-sheet. Of the remainder, ... secondary and tertiary structures of MCL. To obtain more quantitative information on the secon- dary structure of MCL and the effect of ligand binding on it, the far-UV CD sp...

Ngày tải lên: 19/02/2014, 16:20

... Proceedings of the 47th Annual Meeting of the ACL and the 4th IJCNLP of the AFNLP, pages 306–314, Suntec, Singapore, 2-7 August 2009. c 2009 ACL and AFNLP The Contribution of Linguistic Features to Automatic ... advantages of employing higher linguistic processing levels have not been clarified yet. The main goal of our work is to analyze to what extent deep linguistic featu...

Ngày tải lên: 20/02/2014, 07:20

... rules of inference of the system are Modus Ponens, Universal Generalization, Sub- stitution, and A -conversion. The rules of A -conversion that we assume here are a -conversion (change of bound ... between occurences of a variable within the scope of the quantifier from occurences outside of it. The mechanism of A-abstraction provides the tool needed to make such...

Ngày tải lên: 21/02/2014, 20:20

... our aim is to disambiguate w  according to the sense inven- tory of D, i.e. to assign it the right sense chosen from its set of senses Senses(w  ). To this end, we propose the use of a graph-based ... technique to our notion of cycles and quasi-cycles. Given a pair of words w and w  , this heuristic is based on the occurrence of 600 w in the gloss of a sense s  of...

Ngày tải lên: 22/02/2014, 02:20

... evaluation is vital to the progress of ma- chine translation (MT). Since human evaluation is costly and difficult to do reliably, a major focus of research has been on automatic measures of MT quality, ... types of evidence provided by MTR and RTER appear to be complementary and can be combined into a superior model. On the system level (bottom half of Table 1), there is high v...

Ngày tải lên: 20/02/2014, 07:20

... presence of a day of the week expression (“Monday” thru “Sunday”) in the same sentence FW: “today” is the first word of the sentence POS1: part -of- speech of the word before “today” POS2: part -of- speech ... words used to represent dates. The broadcast collection had a greater proportion of expressions referring to time of day, primarily due to repeated announcements of...

Ngày tải lên: 20/02/2014, 18:20

... noninhibitory conforma- tion. Glyphosate sensitivity is partly restored by muta- tion of Ala100 to glycine, allowing glyphosate to bind in its extended, inhibitory conformation. Detoxification of glyphosate Detoxification ... however, was devoid of substrate or inhibitor, and consequently did not reveal the nature of the active site or the mode of action of glyphosate. A dec- ad...

Ngày tải lên: 14/02/2014, 14:20