Tài liệu Báo cáo khoa học: "A Comparison of Alternative Parse Tree Paths for Labeling Semantic Roles" ppt

... subsequent sections of this paper, fol- lowed by a discussion of the implications of our findings and directions for future work. 2 Alternative Parse Tree Paths Parse tree paths were introduced ... characteristics of the parse tree of a sentence, for which competing approaches could be taken. The research effort described in this paper fur- ther explores t...

Ngày tải lên: 20/02/2014, 12:20

... per- formance of the former tend to be superior to that of the latter (Mullen and Collier, 2004; Lin and He, 2009). One of the main issues for supervised approaches has been the representation of ... reason for this choice of cross-validation setting, instead of the most standard ten-fold, is that all of the proposed approaches that use some form of idf utilize the trainin...

Ngày tải lên: 20/02/2014, 04:20

... adipocyte formation, without affecting myogenic differentiation. We also found that expression of miR-27 resulted in blockade of expression of PPARc and C ⁄ EBPa, the two master regulators of adipogenesis. ... 6 of differentiation (A). The amount of Oil Red O was quantified after extraction with isopropanol. The data shown in (B) are mean value ± standard errors of the mean of...

Ngày tải lên: 18/02/2014, 08:20

... studies were performed before the existence of the minor splice vari- ants [81–83] was known, and therefore refer to AMA- CR 1A, the major form of the enzyme in ‘normal’ cells. Examination of the minor ... consists of formation of the phytanoyl-CoA ester followed by 2-hydroxyl- ation, an unusual lyase reaction giving pristanal, and finally oxidation of pristanal to pristanic acid (...

Ngày tải lên: 18/02/2014, 17:20

... permuting children of every tree nodes in T e . We use children to denote direct de- scendants of tree nodes for constituent trees; while for dependency trees, children of a node include not only ... this line of work and address the problem of word reordering based on source syntactic parse trees for SMT. Similar to most previous work, our approach tries to rearrange th...

Ngày tải lên: 19/02/2014, 19:20

... value of n varied by condition: we chose the top 20% of zh-en small, top 20% of en- de, top 50% of fr-en and top 40% of zh-en large. We then randomly picked 450 of these examples to form the ... Proceedings of COLING. 939 Proceedings of the 50th Annual Meeting of the Association for Computational Linguistics, pages 930–939, Jeju, Republic of Korea, 8-14 July 2012. c...

Ngày tải lên: 19/02/2014, 19:20

... other. For the two argumentation dimensions, the most natural application of sequential learning tech- niques is by defining the history of a span of text in terms of the sequence of spans of text ... mini- mum of all cosine distance measures between the vector representation of the span of text and that of each of the spans of text in all parent messages, 74 wh...

Ngày tải lên: 20/02/2014, 12:20

... state of the reader. 3. To achieve the desired state of the reader requires more than a single sentence. R ESULTS This is not the forum for a extensive analysis of our results; for details, ... constraints: 1. The source of information Is a semantic net, having no a priori structuring to facilitate the outputtlng task. This represents the most elaborate performance of...

Ngày tải lên: 21/02/2014, 20:20

... depth-bounded if for every L > 0 there is a D > 0 such that every parse tree for a string of length L has a depth < D. In other words, the depth of a p.arse tree is bounded by the length of the ... f'mite set of symbols, so there is only a finite number of strings of given length L, and it has a finite number of rules, so there is only a finite numb...

Ngày tải lên: 21/02/2014, 20:20

... versions of these two isoforms, as well as of the Mxi1-WR isoform that lacks the SID, and shown to give rise to proteins of the expected size expressed at similar levels (Fig. 1A). Each of these ... apopto- sis, differentiation, and so on. Isoforms of numerous proteins have been studied and compared in this man- ner, including alternative isoforms of members of the p53 ⁄ p63 ⁄...

Ngày tải lên: 18/02/2014, 16:20