Tài liệu Báo cáo khoa học: "Using Cross-Entity Inference to Improve Event Extraction" docx

... automatic method to create a thesaurus that is sensitive to the sentiment of words expressed in different domains. • We describe a method to use the created the- saurus to expand feature vectors ... vector d ∈ R N , where the value of the j-th element d j is set to the total number of occurrences of the unigram or bigram w j in the review d. To find the suitable candidates to exp...

Ngày tải lên: 20/02/2014, 04:20

... never expands to itself); it is currently unknown whether there are tree distribu- tions that satisfy the adaptor grammar constraints for recursive adaptor grammars. Inference for an adaptor grammar ... tree under the adaptor grammar and the PCFG approximation. 3 Word segmentation with adaptor grammars We now turn to linguistic applications of adap- tor grammars, specifically, to model...

Ngày tải lên: 20/02/2014, 09:20

... iterate over nodes from top down 2 for each node X 3 try to insert NP* in X 4 try to insert 0 in X 5 try to insert WHNP 0 or WHADVP 0 in X 6 try to insert *U* in X 7 try to insert a VP ellipsis ... ellipsis site in X 8 try to insert S*T* or SBAR in X 9 try to insert trace of topicalized XP in X 10 try to insert trace of extraposition in X 11 for each node X 12 try...

Ngày tải lên: 20/02/2014, 16:20

... a more complex approach to evaluat- ing the performance of the system's ability to detect errors. Here, we need to look at both the 1. We use the term critique to represent an instance ... In order to coerce our system into accepting only the desired parse tree, we modified it to ac- cept only parses that satisfied bracketed forms. 6. The BSEC has the capability to...

Ngày tải lên: 20/02/2014, 21:20

... Corporation Midtown Tower, 9-7-1 Akasaka, Minato-ku, Tokyo 107-6211, Japan msassano@yahoo-corp.jp Sadao Kurohashi Graduate School of Informatics, Kyoto University Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501, ... Simon Tong and Daphne Koller. 2000. Support vec- tor machine active learning with applications to text classification. In Proc. of ICML-2000, pages 999– 1006. Kiyotaka Uchimoto, Satos...

Ngày tải lên: 20/02/2014, 04:20

... helpful for cross-entity inference to predict roles. 5 Cross-entity Approach In this section we present our approach to using blind cross-entity inference to improve sentence- level ACE event extraction. ... information for events. Liao and Grishman (2010) propose document level cross -event inference to improve event ex- traction. In contrast to Gupta’s w...

Ngày tải lên: 20/02/2014, 04:20

... The sentence “經理要我構買一部計算機” also con- † We use Arabic digits to denote the four tones in Mandarin. tains an error, and we need to replace “構買” with “購買”. “構買” is considered an incorrect word, ... in similar ways, e.g., “構” with “購”, in an efficient way. It is intriguing to resort to image processing methods to find such structurally similar words, but the c...

Ngày tải lên: 20/02/2014, 09:20

... Linguistics Using Automatically Transcribed Dialogs to Learn User Models in a Spoken Dialog System Umar Syed Department of Computer Science Princeton University Princeton, NJ 08540, USA usyed@cs.princeton.edu Jason ... A t and ˜ A t are all assumed to belong to finite sets, and so all the conditional distributions in our model are multinomials. Hence θ is a vec- tor that parameterizes th...

Ngày tải lên: 20/02/2014, 09:20

... skilled human translators is to provide the oral translation of a given source text and then to post-edit the recognized text. In the post-editing step, a prediction engine helps to decrease the amount ... are able to use FSA algorithms to integrate MT and ASR word graphs. The FSA implementation of the search allows us to use standard optimized algorithms, e.g. available from an o...

Ngày tải lên: 20/02/2014, 12:20

... the tonal and toneless STW improvements of the MSIME by using the WP identifier and the WSM are (18.9%, 10.1%) and (25.6%, 16.6%), respectively. From Table 3b, the tonal and toneless STW improvements ... to show the tonal and toneless STW accu- racies of a commercial input product (Microsoft Input Method Editor 2003, MSIME), and an optimized bigram model, BiGram (Tsai, 2005), can bot...

Ngày tải lên: 20/02/2014, 12:20