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Kernel methods for relation extraction
Dmitry Zelenko (SRA International (United States)), Chinatsu Aone (SRA International (United States)), Anthony Raymond Richardella (SRA International (United States))
Abstract: We present an application of kernel methods to extracting relations from unstructured natural language sources. We introduce kernels defined over shallow parse representations of text, and design efficient algorithms for computing the kernels. We use the devised kernels in conjunction with Support Vector Machine and Voted Perceptron learning algorithms for the task of extracting person-affiliation and organization-location relations from text. We experimentally evaluate the proposed methods and compare them with feature-based learning algorithms, with promising results.