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Shuttle.dxi
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Shuttle.dxi
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<?xml version="1.0" encoding="UTF-8"?>
<DEXi>
<NAME>Shuttle Autolanding Problem</NAME>
<DESCRIPTION>
<LINE>The decision problem is to determine the conditions under which an autolanding owould be preferable to manual control of the Shuttle spacecraft. The problem is a well-known in machine learning, as it was put forward by Professor Donald Michie to illustrate the purpose and benefits of decision-tree learning algorithms:</LINE>
<LINE/>
<LINE>Michie,D. (1988). The Fifth Generation's Unbridged Gap. In Rolf Herken (Ed.) The Universal Turing Machine: A Half-Century Survey, 466-489, Oxford University Press. </LINE>
<LINE/>
<LINE>Also see the UCI Machine Learning Repository: http://archive.ics.uci.edu/ml/datasets/Shuttle+Landing+Control</LINE>
<LINE/>
<LINE>Usually, the solution of the problem is formulated in terma of a decision tree. This particular file represents the solution in terms of a DEXi model, that is, in terms of a hierarchy of qualitative attributes and corresponding decision rules.</LINE>
</DESCRIPTION>
<SETTINGS>
<REPORTS>0;1;2;4;5;6;7;8</REPORTS>
</SETTINGS>
<ATTRIBUTE>
<NAME>SHUTTLE</NAME>
<DESCRIPTION>Shuttle Autolanding Problem</DESCRIPTION>
<SCALE>
<SCALEVALUE>
<NAME>auto</NAME>
<GROUP>BAD</GROUP>
</SCALEVALUE>
<SCALEVALUE>
<NAME>noauto</NAME>
<GROUP>GOOD</GROUP>
</SCALEVALUE>
</SCALE>
<FUNCTION>
<LOW>0100</LOW>
</FUNCTION>
<ATTRIBUTE>
<NAME>VISIBILITY</NAME>
<SCALE>
<SCALEVALUE>
<NAME>yes</NAME>
<GROUP>BAD</GROUP>
</SCALEVALUE>
<SCALEVALUE>
<NAME>no</NAME>
<GROUP>GOOD</GROUP>
</SCALEVALUE>
</SCALE>
</ATTRIBUTE>
<ATTRIBUTE>
<NAME>DANGER</NAME>
<DESCRIPTION>xstab or (X2=1)</DESCRIPTION>
<SCALE>
<SCALEVALUE>
<NAME>no</NAME>
<GROUP>BAD</GROUP>
</SCALEVALUE>
<SCALEVALUE>
<NAME>yes</NAME>
<GROUP>GOOD</GROUP>
</SCALEVALUE>
</SCALE>
<FUNCTION>
<LOW>0111</LOW>
</FUNCTION>
<ATTRIBUTE>
<NAME>STABILITY</NAME>
<SCALE>
<SCALEVALUE>
<NAME>stab</NAME>
<GROUP>BAD</GROUP>
</SCALEVALUE>
<SCALEVALUE>
<NAME>xstab</NAME>
<GROUP>GOOD</GROUP>
</SCALEVALUE>
</SCALE>
</ATTRIBUTE>
<ATTRIBUTE>
<NAME>DISTURB</NAME>
<DESCRIPTION>(nn and X1>=med) or (X1=high)</DESCRIPTION>
<SCALE>
<SCALEVALUE>
<NAME>no</NAME>
<GROUP>BAD</GROUP>
</SCALEVALUE>
<SCALEVALUE>
<NAME>yes</NAME>
<GROUP>GOOD</GROUP>
</SCALEVALUE>
</SCALE>
<FUNCTION>
<LOW>001011</LOW>
</FUNCTION>
<ATTRIBUTE>
<NAME>SIGN</NAME>
<SCALE>
<SCALEVALUE>
<NAME>pp</NAME>
<GROUP>BAD</GROUP>
</SCALEVALUE>
<SCALEVALUE>
<NAME>nn</NAME>
<GROUP>GOOD</GROUP>
</SCALEVALUE>
</SCALE>
</ATTRIBUTE>
<ATTRIBUTE>
<NAME>SITUATION</NAME>
<DESCRIPTION>Difficulty of situation</DESCRIPTION>
<SCALE>
<SCALEVALUE>
<NAME>low</NAME>
<GROUP>BAD</GROUP>
</SCALEVALUE>
<SCALEVALUE>
<NAME>med</NAME>
</SCALEVALUE>
<SCALEVALUE>
<NAME>high</NAME>
<GROUP>GOOD</GROUP>
</SCALEVALUE>
</SCALE>
<FUNCTION>
<LOW>222122002</LOW>
</FUNCTION>
<ATTRIBUTE>
<NAME>ERROR</NAME>
<SCALE>
<SCALEVALUE>
<NAME>xl, lx</NAME>
<GROUP>BAD</GROUP>
</SCALEVALUE>
<SCALEVALUE>
<NAME>mm</NAME>
</SCALEVALUE>
<SCALEVALUE>
<NAME>ss</NAME>
<GROUP>GOOD</GROUP>
</SCALEVALUE>
</SCALE>
</ATTRIBUTE>
<ATTRIBUTE>
<NAME>EXTERNAL</NAME>
<DESCRIPTION>External conditions</DESCRIPTION>
<SCALE>
<SCALEVALUE>
<NAME>low</NAME>
<GROUP>BAD</GROUP>
</SCALEVALUE>
<SCALEVALUE>
<NAME>med</NAME>
</SCALEVALUE>
<SCALEVALUE>
<NAME>high</NAME>
<GROUP>GOOD</GROUP>
</SCALEVALUE>
</SCALE>
<FUNCTION>
<LOW>012002</LOW>
</FUNCTION>
<ATTRIBUTE>
<NAME>WIND</NAME>
<SCALE>
<SCALEVALUE>
<NAME>head</NAME>
<GROUP>BAD</GROUP>
</SCALEVALUE>
<SCALEVALUE>
<NAME>tail</NAME>
<GROUP>GOOD</GROUP>
</SCALEVALUE>
</SCALE>
</ATTRIBUTE>
<ATTRIBUTE>
<NAME>MAGNITUDE</NAME>
<SCALE>
<SCALEVALUE>
<NAME>low_med</NAME>
<GROUP>BAD</GROUP>
</SCALEVALUE>
<SCALEVALUE>
<NAME>strong</NAME>
</SCALEVALUE>
<SCALEVALUE>
<NAME>out</NAME>
<GROUP>GOOD</GROUP>
</SCALEVALUE>
</SCALE>
</ATTRIBUTE>
</ATTRIBUTE>
</ATTRIBUTE>
</ATTRIBUTE>
</ATTRIBUTE>
</ATTRIBUTE>
</DEXi>