<front xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://jats.nlm.nih.gov/publishing/1.0/xsd/JATS-journalpublishing1.xsd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">
        <journal-meta>
            <journal-id journal-id-type="publisher-id">JAM</journal-id>
            <journal-title-group>
                <journal-title>Journal of Applied Mathematics</journal-title>
            </journal-title-group>
            <issn pub-type="epub">1687-0042</issn>
            <issn pub-type="ppub">1110-757X</issn>
            <publisher>
                <publisher-name>Hindawi Publishing Corporation</publisher-name>
            </publisher>
        </journal-meta>
        <article-meta>
            <article-id pub-id-type="other">103591</article-id>
            <article-id pub-id-type="doi">10.1155/2013/103591</article-id>
            <article-id pub-id-type="publisher-id">103591</article-id>
            <article-categories>
                <subj-group subj-group-type="heading">
                    <subject>Research Article</subject>
                </subj-group>
            </article-categories>
            <title-group>
                <article-title>An Improved Hybrid Genetic Algorithm with a New Local Search Procedure</article-title>
            </title-group>
            <contrib-group>
                <contrib contrib-type="author" id="U53901672" corresp="yes">
                    <contrib-id contrib-id-type="orcid">http://orcid.org/0000-0002-2889-8460</contrib-id>
                    <name>
                        <surname>Wan</surname>
                        <given-names>Wen</given-names>
                    </name>
                    <email>wwan@vcu.edu</email>
                    <xref ref-type="aff" rid="I1">
                        <sup>1</sup>
                    </xref>
                </contrib>
                <contrib contrib-type="author" id="U65635904">
                    <name>
                        <surname>Birch</surname>
                        <given-names>Jeffrey B.</given-names>
                    </name>
                    <email>jbbirch@vt.edu</email>
                    <xref ref-type="aff" rid="I2">
                        <sup>2</sup>
                    </xref>
                </contrib>
                <contrib contrib-type="Academic Editor" id="U95679486">
                    <name>
                        <surname>Wang</surname>
                        <given-names>Bin</given-names>
                    </name>
                </contrib>
            </contrib-group>
            <aff id="I1">
                <sup>1</sup>
                <addr-line>Department of Biostatistics</addr-line>
                <addr-line>Virginia Commonwealth University</addr-line>
                <addr-line>Richmond</addr-line>
                <addr-line>VA 23298-0032</addr-line>
                <country>USA</country>
                <ext-link ext-link-type="domain-name">vcu.edu</ext-link>
            </aff>
            <aff id="I2">
                <sup>2</sup>
                <addr-line>Department of Statistics</addr-line>
                <addr-line>Virginia Polytechnic Institute and State University</addr-line>
                <addr-line>Blacksburg, VA 24061-0439</addr-line>
                <country>USA</country>
                <ext-link ext-link-type="domain-name">vt.edu</ext-link>
            </aff>
            <pub-date pub-type="publication-year">
                <year>2013</year>
            </pub-date>
            <pub-date pub-type="archival-date"><day>7</day><month>10</month><year>2013</year></pub-date>
            <volume>2013</volume>
            <history>
                <date date-type="received">
                    <day>09</day>
                    <month>01</month>
                    <year>2013</year>
                </date>
                <date date-type="accepted">
                    <day>26</day>
                    <month>08</month>
                    <year>2013</year>
                </date>
            </history>
            <permissions>
                <copyright-year>2013</copyright-year>
                <copyright-holder>Copyright &#xa9; 2013 Wen Wan and Jeffrey B. Birch.</copyright-holder>
                <license license-type="open-access">
                    <license-p>This is an open access article distributed under the <ext-link xlink:href="http://creativecommons.org/licenses/by/3.0/">Creative Commons Attribution License</ext-link>, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.</license-p>
                </license>
            </permissions>
            <abstract>
                <p>One important challenge of a hybrid genetic algorithm (HGA) (also called memetic algorithm) is the tradeoff between global and local searching (LS) as it is the case that the cost of an LS can be rather high. This paper proposes a novel, simplified, and efficient HGA with a new individual learning procedure that performs a LS only when the best offspring (solution) in the offspring population is also the best in the current parent population. Additionally, a new LS method is developed based on a three-directional search (TD), which is derivative-free and self-adaptive. The new HGA with two different LS methods (the TD and Neld-Mead simplex) is compared with a traditional HGA. Four benchmark functions are employed to illustrate the improvement of the proposed method with the new learning procedure. The results show that the new HGA greatly reduces the number of function evaluations and converges much faster to the global optimum than a traditional HGA. The TD local search method is a good choice in helping to locate a global &#x201c;mountain&#x201d; (or &#x201c;valley&#x201d;) but may not perform the Nelder-Mead method in the final fine tuning toward the optimal solution.</p>
            </abstract>
            <counts>
                <ref-count count="29"/>
                <page-count count="10"/>
            </counts>
        </article-meta>
    </front>
