Báo cáo khoa học: "Semantic Role Labeling: Past, Present and Future" ppt

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Báo cáo khoa học: "Semantic Role Labeling via FrameNet, VerbNet and PropBank" potx

... (nouns, adjectives and verbs), we only con-centrated on the verb predicates and their roles.The results show that: (1) ILC can be derivedwith high accuracy for both FN and Probank and (2) ILC can ... Agent,Recipient, Theme and Topic theta roles.Second, we build a frequency distribution ofVN thematic roles on different syntactic positions.Based on our observation and previous studies(Merlo and Stevenson, ... par-ticipant roles. Thus, a ﬁrst test of compatibilitybetween a frame and a Levin class is that theyshare the same participant roles. As FN is anno-tated with frame-speciﬁc semantic roles, we...

Báo cáo khoa học: "Semantic Role Labeling Using Different Syntactic Views∗" pdf

... IS-9978025 and ITR/HCI 0086132mantic labels (Gildea and Jurafsky, 2000; Gildea and Jurafsky, 2002; Gildea and Palmer, 2002; Sur-deanu et al., 2003; Hacioglu and Ward, 2003; Chen and Rambow, ... on all tasksusing hand-corrected parses and automatic parses onPropBank data.Table 2 shows the performance of the system us-ing the hand corrected, TreeBank parses (HAND) and using parses produced ... fea-tures introduced by Gildea and Jurafsky (2002) and ones proposed in Pradhan et al., (2004), Surdeanu etal., (2003) and the syntactic-frame feature proposedin (Xue and Palmer, 2004). Table 1...

Báo cáo khoa học: "Semantic Role Labeling for Coreference Resolution" pot

... theMUC-6 and MUC-7 data sets (Chinchor & Sund-heim, 2003; Chinchor, 2001), using the standardpartitioning of 30 texts for training and 20-30 textsfor testing. Then, we developed and tested ... the speciﬁc lexical expres-sions used, and therefore represents a higher levelof abstraction than predicate argument statistics(Kehler et al., 2004) and Latent Semantic Analy-sis used as a ... coreferent expressions, stringmatching, and linguistic form. On the other hand,the literature emphasizes since the very begin-ning the relevance of world knowledge and infer-ence (Charniak, 1973)....

Báo cáo khoa học: "Semantic Role Labeling Systems for Arabic using Kernel Methods" pptx

... German and Chinese (Erk and Pado, 2006;Sun and Jurafsky, 2004). The systems for the otherlanguages follow the successful models devised forEnglish, e.g. (Gildea and Jurafsky, 2002; Gildea and Palmer, ... 3 presentsthe approach and system adopted for this work; Sec-tion 4 presents the experimental setup, results and discussion. Finally, Section 5 draws our conclu-sions.2 Arabic Language and ... marked and present) and syntaxcould help with the SRL task. The presence of ex-plicit Number and Gender agreement as well as Caseinformation aids with identiﬁcation of the syntacticsubject and...

Báo cáo khoa học: "Grammatical Role Labeling with Integer Linear Programming" pot

... frames(expressed in functional roles, e.g. subject), and given a sentence with verbs, (auxiliary, modal,finite, non-finite, ), and chunks, ( , ), labelall pairs ( ) with a grammatical role 2.In this paper, ... classifiers with onlylocal decisions are: a constituent is assigned to agrammatical role more than once and a grammat-ical role (e.g. of a verb) is instantiated more thanonce. The worst example in our ... pp) attachment ( ) and adjunct ( ). The set of grammatical relationsof a verb (verb complements) is denoted with , itcomprises , , , and .The objective function is:(1)represents the weighted...

Báo cáo khoa học: The role of helix 8 and of the cytosolic C-termini in the internalization and signal transduction of B1 and B2 bradykinin receptors potx

... 129–140 ª 2004 FEBSThe role of helix 8 and of the cytosolic C-termini inthe internalization and signal transduction of B1 and B2bradykinin receptorsAlexander Faussner1, Alexandra Bauer1, Irina ... yellow, and unpolar residues are colored in grey. The blacklines in B1KB2 and B1KB2⁄ SﬁV show the transition between B1wt and B2wt in the chimera.A. Faussner et al. Role of helix 8 and ... palmitoylated (chimera B1CB2) and atY7.53 within the NPXXY sequence (chimera B1YB2)Fig. 1. Schematic representation of theC-terminal B1wt and B2wt sequences and chimera thereof. The C-terminal...

Báo cáo khoa học: The role of residues R97 and Y331 in modulating the pH optimum of an insect b-glycosidase of family 1 pdf

... the pKaof E399 and E187 by 0.7 and 1.6 units, respectively, and displaced thepH optimum to 7.0. From the observed DpKait was calcu-lated that R97 and Y331 contribute 3.4 and 4.0 kJÆmol)1,respectively, ... R97K and R97MSfbgly50 mutants presented curves narrower and pHoptimum (6.5) slightly higher than wild-type Sfbgly50 (6.2)(Fig. 5A,B). The mutant Y331F presented an activity–pHproﬁle wider and ... conﬁgur-ation-retaining glycosidases and their catalytic activitydepends on two glutamic acid residues, one positionedafter bstrand 4 and the other after b strand 7 [1]. Theseglutamic acids are...

Báo cáo khoa học: "Semantic Representation of Negation Using Focus Detection" pptx

... madeis to choose the role that corresponds to the focus.586No. Feature Values Explanation1 role- present {y, n} is role present? 2 role- f-pos {DT, NNP, } First POS tag of role 3 role- f-word {This, ... predicate18 them -role- A0 {preparer, assigner, } thematic role for A019 them -role- A1 {effort, container, } thematic role for A120 them -role- A2 {audience, loaner, .} thematic role for A221 them -role- A3 ... meat, but not cows.Both scope and focus are primarily semantic,highly ambiguous and context-dependent. More ex-amples can be found in Tables 1 and 3 and (Huddle-ston and Pullum, 2002, Chap. 9).4...

Tài liệu Báo cáo khoa học: "Knowledge Base Population: Successful Approaches and Challenges" ppt

... both arguments are present in the same sentence – are not present, making the role of coreference and cross-sentence inference more critical. The role of coreference and inference as limiting ... Conference, aims to address and evaluate these capabilities, and bridge the IE and QA communi-ties to promote research in discovering facts about entities and expanding a knowledge base with ... Moder. Henry was born Monday in Los Angeles and weighed 8? lbs. Rob-erts, 39, and husband Danny Moder, 38, are al-ready parents to twins Hazel and Phinnaeus who were born in November 2006.”...

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