Báo cáo khoa học: "Arabic Named Entity Recognition: Using Features Extracted from Noisy Data" doc

... July 2010. c 2010 Association for Computational Linguistics Arabic Named Entity Recognition: Using Features Extracted from Noisy Data Yassine Benajiba 1 Imed Zitouni 2 Mona Diab 1 Paolo Rosso 3 1 Center ... system by using lexical, syntactic and morphological fea- tures and augmenting the model with deeper lexi- cal features and more syntagmatic features. These extra fe...

Ngày tải lên: 23/03/2014, 16:20

... that the same information might be ex- pressed using a named entity in one language, and using a non -entity phrase in the other language (e.g. “He is from Bulgaria” versus “He is Bulgarian”). Both ... the projection model using all features. The line above, PM-WF represents the projection model without the Wiki-tagger derived features, and is included to show that the gain fr...

Ngày tải lên: 23/03/2014, 14:20

... Kyoto 619-0237, Japan isozaki@cslab.kecl.ntt.co.jp Abstract Named entity (NE) recognition is a task in which proper nouns and nu- merical information in a document are detected and classified into categories such ... and that it improves readability. 1 Introduction Named entity (NE) recognition is a task in which proper nouns and numerical informa- tion in a document are detected and c...

Ngày tải lên: 08/03/2014, 05:20

... evaluation for the Named Entity detection and classification tasks with and without labeled data are in Sections 4 and 5. We conclude in Section 6. 2 The NER how to A Named Entity Recognition ... classifier performance. This section describes the features used for our Named Entity Recognition task. Feature vectors φ i ={f 1 , ,f n } are constructed. The total number of features...

Ngày tải lên: 24/03/2014, 03:20

... determining boundaries of named entities, we called this process Named Entity Delimitation (NED). Once we have determined which words belong to named entities, we then get to the task of classifying the named en- tities ... what we called Named Entity Classification (NEC). We explain the two procedures in the following subsections. 4.1 Named Entity Delimitation We used the BI...

Ngày tải lên: 17/03/2014, 06:20

... an unusual PDE from this protozoal organism. This enzyme, TcrPDEC, is a member of the class I PDEs, as determined from the presence of a characteristic signature sequence and from the conservation ... LmPDEC, phosphodiesterase from Leishmania major; PtdIns(3)P, phosphatidyl inositol-3-phosphate; TbPDEC, phosphodiesterase from Trypanosoma brucei; TcrPDEC, phosphodiesterase from Try...

Ngày tải lên: 19/02/2014, 07:20

... wisdom data to see the most rel- evant speaker features when predicting responses from each individual listener. (The complete list of speaker features are described in Section 4.1.) We used ... Multimodal Speaker Features The speaker videos were transcribed and annotated to extract the following features: Lexical: Some studies have suggested an asso- ciation between lexical featur...

Ngày tải lên: 20/02/2014, 05:20

... 2 gives the total log-probability (using log 2 ) for the split and unsplit datasets using n-gram models of different order. We compute the perplexity of the two datasets using a common denomina- tor: ... suffix forms by using a highly accurate supervised morphological an- alyzer (Yuret and T ¨ ure, 2006): Kasparov b ¨ uk +yAmA+dHk+sH el +sH ¨ op +yAcAk 5. The split+0 version is derived...

Ngày tải lên: 20/02/2014, 09:20

... this model using decision trees. The history-based grammar model provides a mechanism for taking advantage of contextual information from anywhere in the discourse his- tory. Using decision ... vocabulary. We then extracted a few mil- lion words of sentences that are completely cov- ered by this vocabulary from 40,000,000 words of computer manuals. A randomly chosen sentence...

Ngày tải lên: 20/02/2014, 21:20

... approxima- tion features from Section 2.5.3. The “Context-free” system uses the SPADE-inspired features detailed in Section 2.5.2, but none of the features from Sections 2.5.1 or 2.5.3. Finally, the “All features ... and 0 for the other posi- tion features. 2.5.1 Basic finite-state features Our baseline finite-state feature set includes simple tagger derived features, as well as...

Ngày tải lên: 08/03/2014, 02:21