Báo cáo khoa học: "Clique-Based Clustering for improving Named Entity Recognition systems" pot

... 51–59, Athens, Greece, 30 March – 3 April 2009. c 2009 Association for Computational Linguistics Clique-Based Clustering for improving Named Entity Recognition systems Julien Ah-Pine Xerox Research Centre ... Introduction In Information Extraction domain, named entities (NEs) are one of the most important textual units as they express an important part of the meaning of a doc...

Ngày tải lên: 31/03/2014, 20:20

... Association for Computational Linguistics, pages 73–76, Avignon, France, April 23 - 27 2012. c 2012 Association for Computational Linguistics NERD: A Framework for Unifying Named Entity Recognition and ... schemas of the Named Entity categories. Concepts included in the NERD ontology are collected from different schema types: ontology (for DBpedia Spotlight and Zemanta), lig...

Ngày tải lên: 08/03/2014, 21:20

... structures, therefore using only word forms is not enough for many computational tasks. In this paper we an- alyze the effect of morphology in a Named Entity Recognition system for Turkish. We start ... information extraction is the Named Entity Recognition (NER) which aims to locate and classify the named entities of an unstruc- tured text. State-of-the-art NER systems have...

Ngày tải lên: 30/03/2014, 21:20

... Proceedings of EACL '99 New Models for Improving Supertag Disambiguation John Chen* Department of Computer and Information Sciences University of Delaware Newark, DE ... applications. Grishman (1995) and Hobbs et al. (1995) use phrasal information in information extraction. Alshawi (1996) uses dependency information in a machine translation system. The need to impose ... su...

Ngày tải lên: 08/03/2014, 21:20

... number of iterations to be 50. 3 Named Entity Recognition Named entity recognition (NER) is one of the first steps in many applications of information extraction, information retrieval, question ... experimental results from two distinct application domains: named entity recognition and query classification. Our named entity recognition system achieves an F1-scor...

Ngày tải lên: 23/03/2014, 16:21

... inherited forms of CJD are the result of a point mutation in PrP C that increases the propensity for it to assume an abnormal conformation. Virtually all genetic defects implicated in familial forms ... depending on class and isoform) and the potential for inducing serum sick- ness with resultant complications such as renal failure or lymphomas. Nevertheless, clinical trials for passive...

Ngày tải lên: 07/03/2014, 10:20

... parses for the same substring, before it would generate even one parse for another area. The reason for that is that the figures of independent merit are frequently good as relative measures for ... of merit for ordering the agenda, and ultimately rec- ommends one that reduces the number of edges required for a full parse into the thou- sands. (Goldwater et al., 1998) (henc...

Ngày tải lên: 08/03/2014, 06:20

... part-of-speech-specific layer, which con- tains aspectual information for verbs; and copulas, support expressions, and slot filling information for nouns and adjectives. • The “Other” layer, containing ... (Baker et al., 1998) or PropBank for- malisms, have proven useful in a number of NLP projects, such as information extraction and ques- tion answering. The main reason for their popul...

Ngày tải lên: 08/03/2014, 21:20

... AFNLP Minimized Models for Unsupervised Part-of-Speech Tagging Sujith Ravi and Kevin Knight University of Southern California Information Sciences Institute Marina del Rey, California 90292 {sravi,knight}@isi.edu Abstract We ... new possibilities for future research. For direct comparison to previous works, we also pre- sented results for the case when the dictionaries are incomplete...

Ngày tải lên: 17/03/2014, 01:20

... packages such as GATE (http://gate.ac.uk) and NLTK (http://nltk.sourceforge.net/ index.html). Detailed information about vi- sual tools for NLP, in particular about GATE, is to be found in (Gaizauskas ... computational lexicons module - for linguists, • the question modeling module - for computer scientists, • the Hidden-Markov-Models (HMM) module and Topic-Focus module - for both com...

Ngày tải lên: 17/03/2014, 02:20