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TeamProject.toc
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TeamProject.toc
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\contentsline {section}{\numberline {1}background knowledge}{2}%
\contentsline {subsection}{\numberline {1.1}Decision Tree}{2}%
\contentsline {subsection}{\numberline {1.2}Entropy}{2}%
\contentsline {subsection}{\numberline {1.3}Conditional Entropy}{3}%
\contentsline {subsection}{\numberline {1.4}Information Gain}{3}%
\contentsline {subsection}{\numberline {1.5}Information Gain Ratio}{3}%
\contentsline {subsection}{\numberline {1.6}Gini Index}{3}%
\contentsline {section}{\numberline {2}Get Access to Data}{4}%
\contentsline {section}{\numberline {3}Build a Decition Tree}{4}%
\contentsline {subsection}{\numberline {3.1}Feature Choice}{4}%
\contentsline {section}{\numberline {4}Prune the Tree}{4}%
\contentsline {subsection}{\numberline {4.1}Pre-pruning}{4}%
\contentsline {subsection}{\numberline {4.2}Post-pruning}{4}%
\contentsline {subsubsection}{\numberline {4.2.1}REP(Reduced-Error Pruning)}{4}%
\contentsline {subsubsection}{\numberline {4.2.2}PEP(Pessimistic-Error Pruning)}{5}%
\contentsline {subsubsection}{\numberline {4.2.3}CCP(Cost-Complexity Pruning)}{5}%
\contentsline {section}{\numberline {5}Code structure}{5}%
\contentsline {section}{\numberline {6}Result}{5}%
\contentsline {subsection}{\numberline {6.1}The Confusion Matrix}{5}%