a distributional similarity baseline

... the head ‘rescue’, and lemma:failing arg:ARG1 var:bank which indicates that the argument of ‘failing’ is ‘bank’. Note that any tree can be transformed into a feature for a particular lexical item ... Contextual Correlates of Semantic Similarity. In Language and Cognitive Processes, 6(1), pp. 1–28, 1991. Shachar Mirkin, Ido Dagan and Maayan Geffet. 2004. Integrating Pattern-Based and Distributional ... Australia. Maayan Geffet and Ido Dagan. 2004. Feature Vector Quality and Distributional Similarity. Proceedings Of the 20th International Conference on Computa- tional Linguistics, 2004. Maayan Geffet and...

Ngày tải lên: 08/03/2014, 21:20

... other languages found in parallel cor- pora are seen as the (translational) context of that word. We assume that words that share transla- tional contexts are semantically related. Hence, relatedness ... syntax- based approaches and multilingual alignment- based approaches and compare their performance when using the same similarity measures and eval- uation set. 2 Related Work Monolingual syntax-based distributional ... other researchers (Kilgarriff and Yallop, 2000) we can state that this approach generates a type of semantic similarity that is of a looser kind, an associative kind,for example doctor and disease....

Ngày tải lên: 20/02/2014, 12:20

... empirical approach taken in this paper as complementary to Lin's. That is, we are working in the context of a particular appli- cation, and, while we have no mathematical cer- tainty ... work. Smadja et al. (1996) observe that for two potential mutual transla- tions X and Y, the fact that X occurs with translation Y indicates association; X's occur- ring with a translation ... several familiar functions. The cosine metric and Jaccard's coefficient are com- monly used in information retrieval as measures of association (Salton and McGill, 1983). Note that Jaccard's...

Ngày tải lên: 20/02/2014, 18:20

... Dagan, Shaul Marcus, and Shaul Markovitch. 1995. Contextual word similarity and estimation from sparse data. Computer Speech and Lan- guage, 9:123-152. Ido Dagan, Lillian Lee, and Fernando ... Given an unseen pair (n, v), we calcu- late an estimate 15(vln ) as an appropriate aver- age of p(vln I) where n I is distributionally sim- ilar to n. Many distributional similarity mea- sures ... computational rather than in modeling el- ing yields a far more compact representation of the data when k, the model size parameter, is smaller than INf. As noted above, various au- thors have...

Ngày tải lên: 20/02/2014, 18:20

... of the Aus- tralasian Language Technology Association Workshop, pages 97–105, Hobart, Australia. Edgar Meij and Sophia Katrenko. 2007. Bootstrapping lan- guage associated with biomedical entities. ... affects humans, animals and or plants asthma hepatitis tuberculosis HIV malaria (κ 1 :0.98, κ 2 :1.0) DRUG Drugs: A pharmaceutical preparation acetylcholine carbachol heparin penicillin tetracy- clin ... Meeting of the Association for Com- putational Linguistics, pages 809–816, Sydney, Australia. Patrick Pantel and Deepak Ravichandran. 2004. Automati- cally labelling semantic classes. In Proceedings...

Ngày tải lên: 08/03/2014, 00:20

... workshop, Kappa values measured for inter- and intra-annotator agreement for rank and constituent are substantially higher than those for adequacy and fluency, indicating that rank and con- stituent are ... Statistical Machine Translation, ACL07, pages 256–264. H. W. Kuhn. 1955. The hungarianmethod for the assign- ment problem. Naval Research Logistic Quarterly, 2(1):83–97. A. Lavie and A. Agarwal. ... chunking, named en- tity tagging, and finally semantic role tagging need to be performed. 2.3 ParaEval The ParaEval metric (Zhou et al., 2006) uses a large collection of paraphrases, automatically ex- tracted...

Ngày tải lên: 08/03/2014, 01:20

... them. What are the commonalities and differences be- tween the syntactic and semantic distributional patterns of the words of a language? This study is an initial attempt to answer this fundamental and intriguing ... syntactic class for a long time. There- fore, it is reasonable to advocate that characteriza- tion and processing of syntatic classes is far less confusing than that of the semantic classes – a ... basis of formation of the natu- ral classes or communities within these networks. These observations collectively point towards a well accepted fact that the semantic space of nat- ural languages...

Ngày tải lên: 17/03/2014, 02:20

... leverage all available features, which could include (but not limited to) tradi- tional character string-based typographical simi- larity, phonetic similarity and distributional simi- larity ... models that are able to take advantage of this property. Experimental results demon- strate that the distributional similarity based models can significantly outper- form their baseline systems ... distributional similarity to achieve better spelling correction accuracy. We present two methods that are able to take advan- tage of distributional similarity information. The first method extends a...

Ngày tải lên: 17/03/2014, 04:20

... Patrick and Deepak Ravichandran. 2004. Automatically Labeling Semantic Classes. In Proc. of HLT/NAACL-04. Boston, MA. Ravichandran, Deepak and Eduard Hovy. 2002. Learning Surface Text Patterns ... Lexical Distribu- tional Similarity. In Proc. of COLING-04. Geneva, Switzerland. Yangarber, Roman, Ralph Grishman, Pasi Tapanainen and Silja Huttunen. 2000. Automatic Acquisition of Domain ... IJCAI-03. Aca- pulco, Mexico. Pantel, Patrick, Deepak Ravichandran, and Eduard Hovy. 2004. Towards Terascale Semantic Acquisi- tion. In Proc. of COLING-04. Geneva, Switzer- land. Pantel, Patrick...

Ngày tải lên: 17/03/2014, 04:20

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Ngày tải lên: 07/12/2013, 11:41

... Herzegovina Estonia Greece Bulgaria Croatia Armenia Serbia and Montenegro Latvia Lithuania Russian Federation Portugal Ukraine Albania Uzbekistan Georgia Turkey Turkmenistan Kyrgyzstan Kazakhstan Tajikistan Belarus Azerbaijan Romania Republic ... Bakunts a Ministry of Health, Yerevan, Armenia Gerhard Fülöp a Austrian Health Institute, Vienna, Austria Charlotte Wirl a, b Austrian Health Institute, Vienna, Austria Tatiana Naumenko a Republican ... or last available year 13 Note. Data for Belgium, Greece and Portugal are for 1995; data for Armenia, Azerbaijan, Belarus, Cyprus, Georgia, Kazakhstan, Kyrgyzstan, Republic of Moldova, Russian...

Ngày tải lên: 12/02/2014, 12:20

... Botswana and the Botswana Harvard Partnership in Botswana as well as the National Institute of Health Research [formerly Blair Research Institute] and the Biomedical Research & Training ... sub-Saharan Africa The AIDS epidemic has created an estimated 15 million orphans worldwide. Eighty per cent of these orphans live in Sub-Saharan Africa (Kanabus & Fredriksson 2004). Tragically, ... caregivers are not always able to provide for the basic things that are needed for survival. A majority of the parents/guardians reported that they had heard about HIV/AIDS. Both parents and guardians...

Ngày tải lên: 15/02/2014, 19:20