Báo cáo khoa học: "Sentence Compression with Semantic Role Constraints" doc

... is how a model with SR constraints is superior to a model without them. MLN with SRL outperforms MLN without SRL with a 7.6 points margin (F1-Dep). The compression rate of MLN with SRL goes up ... 3.1.1 and 3.1.2, respectively. 3.1.1 Semantic Role Constraints Semantic role labeling generally includes the three subtasks: predicate identification; argument role la- beling; se...

Ngày tải lên: 30/03/2014, 17:20

... parsing with a POS tagger or with gold standard POS tags. Figure 4 shows the accuracy of HPSG predicate-argument relations obtained with depen- dency constraints determined by dependency pars- ing with ... sentences were automatically tagged with parts- of-speech with about 97% accuracy, using a max- imum entropy POS tagger. We also report results on parsing text with gold stand...

Ngày tải lên: 23/03/2014, 18:20

... bank: A corpus annotated with semantic roles. Computational Linguistics, 31(1), March. Sameer S. Pradhan, Wayne Ward, and James H. Mar- tin. 2008. Towards robust semantic role labeling. Comput. ... 1985. Frames and the semantics of understanding. Quaderni di Semantica, 4(2):222– 254. Hagen F ¨ urstenau and Mirella Lapata. 2009. Graph alignment for semi-supervised semantic role lab...

Ngày tải lên: 30/03/2014, 21:20

... the complete task. 1 Introduction Semantic role labeling (SRL), the process of auto- matically identifying arguments of a predicate in a sentence and assigning them semantic roles, has received much attention ... a FE bracketer and a classifier that assigns semantic roles to FEs. Both parts are implemented as SVM classifiers trained using LIBSVM. The semantic role classifier is rathe...

Ngày tải lên: 20/02/2014, 12:20

... arguments in t and must label each one with its appropriate semantic role. Formally, let L denote a mapping of the nodes in t to a label set of semantic roles (including NONE) and let Id(L) be ... task then is to label each node in the parse tree with the semantic role of the phrase it dominates, or NONE, if the phrase does not fill any role. We do stress however that the joint f...

Ngày tải lên: 08/03/2014, 04:22

... Ellipsis Resolution with Underspecified Scope Michael Schiehlen Institute of Natural Language Processing Azenbergstr. ... underspecified representa- tion. Furthermore it is shown that the ap- proach presented can cope with the exam- ples discussed by Dalrymple et al. (1991) as well as a problem noted recently by Erk ... ellipsis resolution or anaphora res- olution, are arguably best perform...

Ngày tải lên: 08/03/2014, 07:20

... rules within one derivation. • As multiple derivations are used for finding optimal translations, we extend the minimum error rate training (MERT) algorithm (Och, 2003) to tune feature weights with ... into an English sentence “give a talk”. ing with multiple models achieves an absolute im- provement of 1.5 BLEU points over individual de- coding with single models (Section 5). 2 Backgrou...

Ngày tải lên: 23/03/2014, 16:21

... model: (1) select a document with probability (2) pick a latent class with probability and (3) generate a word with probability , where (6) The joint probability between a word and docu- ment, , is ... personal document collec- tion. We used the following four standard doc- ument collections: (i) MED (1033 document ab- stracts from the National Library of Medicine), (ii) CRAN (1400 do...

Ngày tải lên: 22/02/2014, 02:20

... = PV NP1} Role = ARG0, Head Word = John Role = ARG1, Head Word = sandwich Role = ARG2, Head Word = I Role = ARG0, Category = NP Role = ARG1, Category = NP Role = ARG2, Category = NP Role = ARG0, ... particular roles in particular places in the simple sentence, but also how those roles co-occur with other roles. For a particular simple sentence t sv i , we apply all extracted...

Ngày tải lên: 31/03/2014, 00:20

... PR with the V32I mutation; PR I50V , PR with the I50V mutation; PR I54M , PR with the I54M mutation; PR I54V , PR with the I54V mutation; PR I84V , PR with the I84V mutation; PR L90M , PR with ... compared with PR WT –SQV. (B) PR I50V –APV compared with PR I50V –SQV. (C) PR I54M –APV compared with PR I54M –SQV. (D) PR I54V –APV compared with PR I54V –SQV. (E) PR I84V –APV...

Ngày tải lên: 18/02/2014, 04:20