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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Database+(Oxford)
2016 ; 2016
(ä): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Disease named entity recognition by combining conditional random fields and
bidirectional recurrent neural networks
#MMPMID27777244
Wei Q
; Chen T
; Xu R
; He Y
; Gui L
Database (Oxford)
2016[]; 2016
(ä): ä PMID27777244
show ga
The recognition of disease and chemical named entities in scientific articles is
a very important subtask in information extraction in the biomedical domain. Due
to the diversity and complexity of disease names, the recognition of named
entities of diseases is rather tougher than those of chemical names. Although
there are some remarkable chemical named entity recognition systems available
online such as ChemSpot and tmChem, the publicly available recognition systems of
disease named entities are rare. This article presents a system for disease named
entity recognition (DNER) and normalization. First, two separate DNER models are
developed. One is based on conditional random fields model with a rule-based
post-processing module. The other one is based on the bidirectional recurrent
neural networks. Then the named entities recognized by each of the DNER model are
fed into a support vector machine classifier for combining results. Finally, each
recognized disease named entity is normalized to a medical subject heading
disease name by using a vector space model based method. Experimental results
show that using 1000 PubMed abstracts for training, our proposed system achieves
an F1-measure of 0.8428 at the mention level and 0.7804 at the concept level,
respectively, on the testing data of the chemical-disease relation task in
BioCreative V.Database URL: http://219.223.252.210:8080/SS/cdr.html.