Journal
BMC BIOINFORMATICS
Volume 6, Issue -, Pages -Publisher
BMC
DOI: 10.1186/1471-2105-6-S1-S5
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Background: Good automatic information extraction tools offer hope for automatic processing of the exploding biomedical literature, and successful named entity recognition is a key component for such tools. Methods: We present a maximum-entropy based system incorporating a diverse set of features for identifying gene and protein names in biomedical abstracts. Results: This system was entered in the BioCreative comparative evaluation and achieved a precision of 0.83 and recall of 0.84 in the open evaluation and a precision of 0.78 and recall of 0.85 in the closed evaluation. Conclusion: Central contributions are rich use of features derived from the training data at multiple levels of granularity, a focus on correctly identifying entity boundaries, and the innovative use of several external knowledge sources including full MEDLINE abstracts and web searches.
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