recognizing named entities in tweets acl 2011

... 2009. Annotating and recognising named entities in clinical notes. In ACL- IJCNLP, pages 18– 26. Dan Wu, Wee Sun Lee, Nan Ye, and Hai Leong Chieu. 2009. Domain adaptive bootstrapping for named en- tity ... pages 141–150. Jenny Rose Finkel, Trond Grenager, and Christopher Manning. 2005. Incorporating non-local information into information extraction systems by gibbs sampling. In ACL, pages 363–370. Honglei ... transcripts. In EMNLP, pages 320–327. Jing Jiang and ChengXiang Zhai. 2007. Instance weight- ing for domain adaptation in nlp. In ACL, pages 264– 271. Dan Klein and Christopher D. Manning. 2003....

Ngày tải lên: 17/03/2014, 00:20

... Symp,763–767. 26 Proceedings of the ACL- IJCNLP 2009 Student Research Workshop, pages 18–26, Suntec, Singapore, 4 August 2009. c 2009 ACL and AFNLP Annotating and Recognising Named Entities in Clinical Notes Yefeng ... are only used once. The clinical information extraction problem is addressed in this work by applying machine learn- ing methods to a corpus annotated for clinical named entities. The data selection ... substances and findings have special affixes, which are very distinguishable from ordinary words. Lexical Features: Every token in the training data was used as a feature. Alphabetic words in the training data...

Ngày tải lên: 08/03/2014, 01:20

... use cen- tering theory (Kameyama, 1986) to determine how easily a noun phrase can be referred to in the follow- ing context. 2.2 Centering Theory Centering theory is an empirical sorting rule used ... Association of Com- putational Linguistics, pages 178–181. M. Kameyama. 1986. A property-sharing constraint in center- ing. Annual Meeting of Association of Computational Lin- guistics, pages 200–206. T. ... 2004) 3. STR-CT : STR with the centering top feature explained in Section 2.3. 4. STR-CS : STR with the centering structure fea- ture explained in Section 2.4. 3.1 Setting We used 1451 texts from Japanese...

Ngày tải lên: 17/03/2014, 04:20

... with self-training on unlabeled target-domain data; enforc- ing the same recall-oriented bias in the self- training stage yields marginal gains. 1 1 Introduction This paper considers named entity ... remainder is used in training. 4 Models Our starting point for statistical NER is a feature- based linear model over sequences, trained using the structured perceptron (Collins, 2002). 8 In addition ... domain, sacri- ficing performance in the original domain. The recall-oriented bias is not merely encour- aging the learner to identify entities already seen in training. As recall increases, so does...

Ngày tải lên: 24/03/2014, 03:20

... its inputs (including internal component mapping, initial and final NE type, NE bigram-based string, and left/right distance), without involving any related probability factors derived within ... Program) of China under Grant No. 2006AA010108-4. References Al-Onaizan, Yaser, and Kevin Knight. 2002. Translat- ing Named Entities Using Monolingual and Bilin- gual resources. In Proceedings of ... Processing. Com- putational Linguistics , 22(1):39-72, March. Chen, Hsin-His, Changhua Yang and Ying Lin. 2003. Learning Formulation and Transformation Rules for Multilingual Named Entities. In...

Ngày tải lên: 23/03/2014, 16:20

... entities. Fillers of named entities should be, in principle, distin- guished from any other filler, since they may be informative to discriminate entities. Following this intuition, we designed ... corre- sponding named entity is shown in figure 4. As decided in the annotation guidelines, fillers can be part of a named entity. This can happen for com- plex named entities involving several ... 1998) and (Collins, 1997), integrate more information than what is used in equations 4 and 5. Consider- ing a particular node in the entity tree, not includ- ing terminals, the information used...

Ngày tải lên: 24/03/2014, 03:20

Ngày tải lên: 20/11/2013, 20:59

... Joshi, Aravind K., Weinstein, Scott. (1983). Providing a Unified Account of Definite Noun Phrases in Discourse, Proceedings of the 21st Annual Meeting of the ACL. Cambridge, MA: ACL. Hinrichs, ... for generating DEs for dependent quantifiers stemming from indefinite and definite NPs which over- comes some difficulties in capturing dependencies be- tween discourse entities. In our multi-modal ... from non-linguistic sources, such as pointing actions, were taken into account. The discourse entities are used in intra- and extra-sentential pronoun resolution in BBN Janus. 1 Introduction...

Ngày tải lên: 21/02/2014, 20:20

... part of the FBIS 2001 Multilingual corpus. Translating Named Entities Using Monolingual and Bilingual Resources Yaser Al-Onaizan and Kevin Knight Information Sciences Institute University of Southern ... becausemany are domain specific, not to be found in bilingual dictionaries. We present a novel algorithm for translating named entity phrases using easily obtain- able monolingual and bilingual resources. We ... to iden- tify all named entities in the top retrieved docu- ments for each sub-phrase. All named entities of the type of the named entity in question (e.g., PER- SON) foundin the retrieved documents...

Ngày tải lên: 08/03/2014, 07:20

... of named entities and their context 3. measuring context similarities among pairs of named entities 4. making clusters of pairs of named entities 5. labeling each cluster of pairs of named entities We ... little higher in the PER-GPE domain than in the COM-COM do- main, perhaps because there were more NE pairs with high cosine similarity in the PER-GPE do- main than in the COM-COM domain. However, ... corpora. The key idea is clustering pairs of named entities according to the similarity of con- text words intervening between the named entities. Our experiments using one year of newspapers re- veals...

Ngày tải lên: 17/03/2014, 06:20

... Although changes in pitch maxima and minima were not significant in themselves, the increases in rise slopes for CME's in contrast to flattening of rise slopes in CRE's combined to form ... J.R. Quinlan. 1992. C4.5: Programs for Ma- chine Learning. Morgan Kaufmann. B. G. Secrest and G. R. Doddington. 1993. An integrated pitch tracking algorithm for speech systems. In ICASSP ... greater. This increase in error likelihood sug- gests a change in speaking style which diverges from the recognizer's model. The remainder The field trial involved a group of nineteen subjects....

Ngày tải lên: 17/03/2014, 07:20

... Table of Contents Introduction 1 Part I: Beginning C++ HOUR 1: Writing Your First Program 5 Using C++ . 5 Finding a Compiler. 6 Compiling and Linking the Source Code . 9 Creating Your First Program ... Making Use of Advanced Polymorphism 269 Problems with Single Inheritance. 269 Abstract Data Types . 273 HOUR 19: Storing Information in Linked Lists 289 Linked Lists and Other Structures. 289 Linked ... later. Functions The main() function is unusual among C++ functions because it’s called automati- cally when a program begins. A program is executed line by line in source code, beginning with the start of main(). When...

Ngày tải lên: 19/03/2014, 14:09

... funds launched in 2011 were absolute return funds, indicating an on-going interest in the sector. In the context of a low interest rate environment and concerns about volatility in the markets, investor demand ... funds (1992 2011) As Chart 39 shows, unfettered funds of funds (ie. those investing in external, rather than internal funds) took the majority of net retail investment in 2011, continuing the pattern ... European investors returned to net investment in equity funds in 2009 and 2010, with UK investors showing greater confidence by adding to their holdings of equity funds at a higher rate. In 2011 there was...

Ngày tải lên: 30/03/2014, 12:20

... the clustering: for the monolingual clustering they use only named entities, for the multilingual clustering they extract verbs besides named entities. The strategies that use language-independent representation ... sum- marizer which includes monolingual and multilin- gual clustering; the multilingual clustering takes input from the monolingual clusters. The authors select different type of features depending on the clustering: ... “Sampling and Feature Selection in a Genetic Algorithm for Document Clustering”. Computational Linguistics and Intel- ligent Text Processing, CICLing’04. Lecture Notes in Computer Science, Springer-Verlag,...

Ngày tải lên: 31/03/2014, 01:20

... cally errors in subject-verb agreement • ED: extra determiner • MD: missing determiner for an NP that re- quires a determiner • ID: incorrect determiner In addition to testing sentences ... as in the following: (8) VP(missing ?a) ~ V NP NP(missing ?a) (9) VP(missing ?a) ~ V NP(missing ?a) NP (I0) VP(missing ?a) > V(missing ?a) NP NP This would cause an unwarranted increase ... Wisconsin, July. L. Selinker. 1972. Interlanguage. International Review of Applied Linguistics, 10:209-231. D. Sleeman. 1982. Inferring (mal) rules from pupil's protocols. In Proceedings...

Ngày tải lên: 31/03/2014, 04:20

... Gulf Publishing, Houston, TX, 1985, 364. Comofining [Cobalt Molybdenum Refining] A hydrorefining process for making lubri- cating oils. Developed by Lurgi and Wintershall and operated in Salzbergen, ... Dowa Mining Company, Japan, in the early 1980s. In 1986 it was in use in nine plants in Japan and the United States. Kohl, A. L. and Riesenfeld, F. C., Gas Purification, 4th ed., Gulf Publishing, ... aluminium] A process for extracting alumina from anorthosite ore (a calcium aluminosilicate) by leaching with hydrochloric acid, precipitating aluminum trichloride hexahydrate, and calcining...

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