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  <pub:InProceedings rdf:about="http://ebiquity.umbc.edu/paper/html/id/425/Discovering-Domain-Specific-Composite-Kernels">
    <rdfs:label><![CDATA[Discovering Domain-Specific Composite Kernels]]></rdfs:label>
    <pub:title><![CDATA[Discovering Domain-Specific Composite Kernels]]></pub:title>
    <pub:publishedOn rdf:datatype="&xsd;dateTime">2005-07-09T00:00:00-05:00</pub:publishedOn>
    <pub:abstract><![CDATA[Kernel-based data mining algorithms, such as Support Vector
Machines, project data into high-dimensional feature spaces,
wherein linear decision surfaces correspond to non-linear decision
surfaces in the original feature space. Choosing a kernel
amounts to choosing a high-dimensional feature space,
and is thus a crucial step in the data mining process. Despite
this fact, and as a result of the difficulty of establishing that a
function is a positive definite kernel, only a few standard kernels
(e.g. polynomial and Gaussian) are typically used. We
propose a method for searching over a space of kernels for
composite kernels that are guaranteed to be positive definite,
and that are tuned to produce a feature space appropriate for
a given dataset. Composite kernel functions are easily interpreted
by humans, in contrast to the output of other work on
kernel tuning. Empirical results demonstrate that our method
often finds composite kernels that yield higher classification
accuracy than the standard kernels.]]></pub:abstract>
    <pub:pages><![CDATA[732-739]]></pub:pages>
    <pub:counter>212</pub:counter>
    <pub:booktitle><![CDATA[Proceedings of the Twentieth National Conference on Artificial Intelligence and the Seventeenth Annual Conference on Innovative Applications of Artificial intelligence]]></pub:booktitle>
    <pub:publisher><![CDATA[AAAI Press]]></pub:publisher>
    <pub:author>
       <rdf:List>
         <rdf:first><person:Alumnus rdf:about="http://ebiquity.umbc.edu/person/html/Tom/Briggs/"><person:name><![CDATA[Tom  Briggs]]></person:name><rdfs:label><![CDATA[Tom  Briggs]]></rdfs:label></person:Alumnus></rdf:first>
         <rdf:rest>
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             <rdf:first><person:Collaborator rdf:about="http://ebiquity.umbc.edu/person/html/Tim/Oates/"><person:name><![CDATA[Tim  Oates]]></person:name><rdfs:label><![CDATA[Tim  Oates]]></rdfs:label></person:Collaborator></rdf:first>
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    <pub:firstAuthor><person:Alumnus rdf:about="http://ebiquity.umbc.edu/person/html/Tom/Briggs/"><person:name><![CDATA[Tom  Briggs]]></person:name><rdfs:label><![CDATA[Tom  Briggs]]></rdfs:label></person:Alumnus></pub:firstAuthor>
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      <pub:softCopyFormat><![CDATA[PDF Document]]></pub:softCopyFormat>
      <pub:softCopyURI><![CDATA[http://ebiquity.umbc.edu/get/a/publication/432.pdf]]></pub:softCopyURI>
      <pub:softCopySize>190900</pub:softCopySize>
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  </pub:InProceedings>

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