Biomedical Relation Extraction: From Binary to Complex

<table class="table-group" id="tab8"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td align="left"> Subtask </td><td align="left"> Sentence </td><td align="center"> Events </td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td align="left"> Core event extraction </td><td align="left">Expression of IkappaBalpha in the nucleus of human peripheral blood T lymphocytes. </td><td align="center">E1 Gene_expression: Expression Theme: IkappaBalpha</td></tr><tr><td align="center" colspan="3"><hr/></td></tr><tr><td align="left"> Event enrichment </td><td align="left"> We demonstrate the nuclear localization of I(kappa)B(alpha) in PBL by different techniques: Western blot, indirect immunofluorescence, and electron microscopy. </td><td align="center">E1 Localization: localization Theme: I(kappa)B(alpha) ToLoc: nuclear </td></tr><tr><td align="center" colspan="3"><hr/></td></tr><tr><td align="left"> Negation and speculation recognition </td><td align="left">This failure to degrade IkappaBalpha may underlie both the observed decrease in NFkappaB induction and the IL-2 receptor expression in TNF-treated T cells during aging. </td><td align="center">E1 Protein_catabolism: degrade Theme: IkappaBalpha M1 Negation E1</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Examples of the three subtasks of the BioNLP'09 shared task.

Computational and Mathematical Methods in Medicine

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Table 8

Table 8: Biomedical Relation Extraction: From Binary to Complex 