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Issue No. 03 - July-September (2010 vol. 7)
ISSN: 1545-5963
pp: 385-399
Florian Leitner , Spanish National Cancer Research Centre (CNIO), Madrid
Scott A. Mardis , MITRE Corporation, Bedford
Martin Krallinger , Spanish National Cancer Research Centre (CNIO), Madrid
Gianni Cesareni , University of Rome Tor Vergata, Rome
Lynette A. Hirschman , MITRE Corporation, Bedford
Alfonso Valencia , Spanish National Cancer Research Centre (CNIO), Madrid
We present the results of the BioCreative II.5 evaluation in association with the FEBS Letters experiment, where authors created Structured Digital Abstracts to capture information about protein-protein interactions. The BioCreative II.5 challenge evaluated automatic annotations from 15 text mining teams based on a gold standard created by reconciling annotations from curators, authors, and automated systems. The tasks were to rank articles for curation based on curatable protein-protein interactions; to identify the interacting proteins (using UniProt identifiers) in the positive articles (61); and to identify interacting protein pairs. There were 595 full-text articles in the evaluation test set, including those both with and without curatable protein interactions. The principal evaluation metrics were the interpolated area under the precision/recall curve (AUC iP/R), and (balanced) F-measure. For article classification, the best AUC iP/R was 0.70; for interacting proteins, the best system achieved good macroaveraged recall (0.73) and interpolated area under the precision/recall curve (0.58), after filtering incorrect species and mapping homonymous orthologs; for interacting protein pairs, the top (filtered, mapped) recall was 0.42 and AUC iP/R was 0.29. Ensemble systems improved performance for the interacting protein task.
Text mining, text analysis, natural language processing, molecular biology, biological curation.

G. Cesareni, L. A. Hirschman, S. A. Mardis, A. Valencia, F. Leitner and M. Krallinger, "An Overview of BioCreative II.5," in IEEE/ACM Transactions on Computational Biology and Bioinformatics, vol. 7, no. , pp. 385-399, 2010.
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