Báo cáo khoa học: "Finite-state Approximation of Constraint-based Grammars using Left-corner Grammar Transforms" doc

... Over the set of 5 semantic rela- tions defined by Nastase and Szpakowicz (2003), they achieve an accuracy of 45.7% for the task of assigning one of 5 semantic relations to each of the 600 modifier-noun ... conditions, and again using all of the joining terms produced the best results. The SVM algorithm produced the best accuracy of all, achieving 50.1% accuracy using...

Ngày tải lên: 20/02/2014, 12:20

... performance of each single ad (its persuasiveness, from our point of view): • CTR, Click Through Rate: measures the num- ber of clicks divided by the number of impres- sions (i.e. the number of times ... experimentally exploring other aspects of the wide field of pragmatics. The paper is structured as follows: Section 2 dis- cusses the main advantages of ecological approaches...

Ngày tải lên: 07/03/2014, 18:20

... we explore correlation of dependency relation paths to rank candi- date answers in answer extraction. Using the correlation measure, we compare de- pendency relations of a candidate answer and ... paths of each pair is calculated by employing Dynamic Time Warping algorithm. The input of the cal- culation is correlations between dependency re- lations, which are estimated from a set...

Ngày tải lên: 08/03/2014, 02:21

... a set of Arabic documents and an Arabic query, find a list of documents relevant to the query, and rank them by probability of relevance. We used the TREC 2002 documents (several years of AFP ... phase was adapted to use the sum of the weights of a word in a sentence instead of the count. 2.3 Candidate Stem Scoring As previously mentioned, each word has a list of substrings tha...

Ngày tải lên: 08/03/2014, 04:22

... order of prenominal adjectives in English. 2 Word bigram model The problem of generating ordered sequences of adjectives is an instance of the more general prob- lem of selecting among a number of ... entropy of a feature f which takes values V as the weighted sum of the entropy of each of the values V: H(D f ) = ∑ v i ∈V H(D f=v i ) |D f=v i | |D| Here H(D f=v i ) is the...

Ngày tải lên: 08/03/2014, 05:20

... Semiquantitative assessment of the incorporation level of DOPA was made by com- parison of the sum of the peak heights of the 3-DOPA species (peaks E, G, H and I) vs. the sum of the peak heights of the 2-DOPA ... substi- tution of this residue [22,24,25], it was of interest to examine fluorescence spectra of in vitro synthesized GFP. The excitation and emission spectra of...

Ngày tải lên: 16/03/2014, 22:20

... generation capabil- ities of the grammars. We use two of the DELPH- IN wide-coverage grammars: the English Resource Grammar (ERG: Copestake and Flickinger (2000)) and a German grammar, GG (M ¨ uller ... Flickinger. 2001. An algebra for semantic construction in constraint-based grammars. In Proceedings of the 39th Annual Meeting of the ACL and 10th Conference of the EACL (ACL...

Ngày tải lên: 17/03/2014, 02:20

... relation. Using this technique on a subpart of the category space, we obtain 90% accuracy overall. In some sense, this is a very old idea, dating back to the early days of semantic nets and semantic grammars. The ... characteristics of the lexical ontology MeSH, the use of a corpus to examine the problem space, the method of determining the rela- tions, the accuracy of the res...

Ngày tải lên: 17/03/2014, 08:20

... that a level of "logical form" is a necessary step toward the goal of rep- resenting the meaning of a sentence, few people agree on the content and form of this level of representation. ... fight goes off, push the handle. In the following sections, I discuss the issues that arise in defining the logical form of these three types of sen- tences. The Davidsonian t...

Ngày tải lên: 17/03/2014, 08:20

... School of Chemistry and Chemical Engineering, Queen’s University Belfast, UK 3 School of Medicine and Dentistry, Queen’s University Belfast, UK 4 School of Biosciences, The University of Birmingham, ... the permeablization of the bacterial inner membrane, resulting in uncoupling of respiratory electron transport and consequent collapse of the proton motive force. Thus, we conclu...

Ngày tải lên: 23/03/2014, 07:20