Báo cáo khoa học: "A Suite of Shallow Processing Tools for Portuguese: LX-Suite" doc

... structure and implements a new TE module for information extraction phase of the QA task. TE is a task of determining if the truth of a text entails the truth of another text (hypothesis). Harabagui ... characterizes features for our TE model based on analysis of q/a pairs. Here we give brief descriptions of only the major modules of our QA due to space limitations. 2.1 Pre...

Ngày tải lên: 20/02/2014, 07:20

... description of the participants, (2) a characterization of the common ground at the outset of the dialogue in terms of Discourse Representation Theory (Kamp and Reyle, 1993) and (3) a set of dialogue ... speaker can be specified. The amount of information which the dialogue planner actually provides for each of these attributes varies, however, per dialogue act: for some dia...

Ngày tải lên: 22/02/2014, 02:20

... question into one of predefined patterns, such as ”When did Jack Welch retire from GE?” to the pattern ”When+did+NP+Verb+NPorPP”. For each ques- tion pattern, there is a set of syntactic structures for potential ... otherwise. α is a factor to discount the co-occurrence value for long paths. It is set to the inverse proportion of the sum of path lengths of the path pair. 892 3....

Ngày tải lên: 08/03/2014, 02:21

... provides natural entry points for differ- ent tools focused on reducing the effort required for performing common tasks during IE development. Underlying our WizIE are a state -of- the-art IE rule language ... WizIE is a step forward towards enabling extractor develop- ment for novice IE developers. 1 Introduction Information Extraction (IE) refers to the problem of extracting struc...

Ngày tải lên: 16/03/2014, 20:20

... 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

... number of times term i occurs in D, idf i is the inverse document frequency of term i, N is the total number of documents and df i is the number of documents that contain term i. The utilization 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 train...

Ngày tải lên: 20/02/2014, 04:20

... policy, an agreement of 92.8% was achieved among annotators for the set of start and stop locations for arguments. Examples of semantic role annotations in our corpus for each of the four predicates ... harmonic mean of precision and recall. Our calculation of recall scores represents the best-possible performance of systems using only these types of parse-tree p...

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 K...

Ngày tải lên: 21/02/2014, 20:20

... 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 number of possible parse trees of given depth ... algorithm for this problem. Let C a be the set of pairs [A,B] such that A B by a tree of depth n. Clearly C t is the set of pairs [A,B] such that (A ) B) is a rule...

Ngày tải lên: 21/02/2014, 20:20

... Computing Sciences, University of Sussex Falmer, Brighton BN1 9QH, UK *Center for the Study of Language and Information, Stanford University Ventura Hall, Stanford, CA 94305-4115, USA {kiefer, ... unification. Therefore, any improvements in the efficiency of unification would have direct conse- quences for the overall performance of the sys- tem. One key to reducing the c...

Ngày tải lên: 08/03/2014, 06:20