formula.html

本体推理工具 共八个例子:从如何建立本体到做一些简单的的本体推理

<A NAME="getFreeVariables()"><!-- --></A><H3>
getFreeVariables</H3>
<PRE>
java.util.Set&lt;<A HREF="../../../../../org/semanticweb/kaon2/api/logic/Variable.html" title="interface in org.semanticweb.kaon2.api.logic">Variable</A>&gt; <B>getFreeVariables</B>()</PRE>
<DL>
<DD>Returns the set of free variables of this formula.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the set of free variables of this formula</DL>
</DD>
</DL>
<HR>

<A NAME="getFreeVariables(java.util.Set)"><!-- --></A><H3>
getFreeVariables</H3>
<PRE>
void <B>getFreeVariables</B>(java.util.Set&lt;<A HREF="../../../../../org/semanticweb/kaon2/api/logic/Variable.html" title="interface in org.semanticweb.kaon2.api.logic">Variable</A>&gt;&nbsp;freeVariables)</PRE>
<DL>
<DD>Adds the free variables of this formula to the supplied set.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>freeVariables</CODE> - the set receiving the free variables</DL>
</DD>
</DL>
<HR>

<A NAME="isClosed()"><!-- --></A><H3>
isClosed</H3>
<PRE>
boolean <B>isClosed</B>()</PRE>
<DL>
<DD>Returns <code>true</code> if this formula is closed---that is, if it does not have free variables.
 Hence, this method returns <code>true</code> if and only if getFreeVariables().isEmpty() returns <code>true</code>;
 however, this method may be faster.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD><code>true</code> if this formula is closed</DL>
</DD>
</DL>
<HR>

<A NAME="isGround()"><!-- --></A><H3>
isGround</H3>
<PRE>
boolean <B>isGround</B>()</PRE>
<DL>
<DD>Returns <code>true</code> if this formula is ground---that it, if it does not contain a variable.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD><code>true</code> if this formula is ground</DL>
</DD>
</DL>
<HR>

<A NAME="apply(java.util.Map)"><!-- --></A><H3>
apply</H3>
<PRE>
<A HREF="../../../../../org/semanticweb/kaon2/api/logic/Formula.html" title="interface in org.semanticweb.kaon2.api.logic">Formula</A> <B>apply</B>(java.util.Map&lt;<A HREF="../../../../../org/semanticweb/kaon2/api/logic/Variable.html" title="interface in org.semanticweb.kaon2.api.logic">Variable</A>,<A HREF="../../../../../org/semanticweb/kaon2/api/logic/Term.html" title="interface in org.semanticweb.kaon2.api.logic">Term</A>&gt;&nbsp;substitution)</PRE>
<DL>
<DD>Returns the formula obtained by replacing free variables according to the specified substitution.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>substitution</CODE> - the substitution
<DT><B>Returns:</B><DD>the result of applying the substitution to the formula</DL>
</DD>
</DL>
<HR>

<A NAME="isInNNF()"><!-- --></A><H3>
isInNNF</H3>
<PRE>
boolean <B>isInNNF</B>()</PRE>
<DL>
<DD>Retutns <code>true</code> if this formula is in negation-normal form.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD><code>true</code> if this formula is in negation-normal form.</DL>
</DD>
</DL>
<HR>

<A NAME="getNNF()"><!-- --></A><H3>
getNNF</H3>
<PRE>
<A HREF="../../../../../org/semanticweb/kaon2/api/logic/Formula.html" title="interface in org.semanticweb.kaon2.api.logic">Formula</A> <B>getNNF</B>()</PRE>
<DL>
<DD>Returns the negation-normal form of this formula.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the negation-normal form of this formula</DL>
</DD>
</DL>
<HR>

<A NAME="getClassicalComplementNNF()"><!-- --></A><H3>
getClassicalComplementNNF</H3>
<PRE>
<A HREF="../../../../../org/semanticweb/kaon2/api/logic/Formula.html" title="interface in org.semanticweb.kaon2.api.logic">Formula</A> <B>getClassicalComplementNNF</B>()</PRE>
<DL>
<DD>Returns the negation-normal form of this formula complemented under classical negation.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the negation-normal form of this formula complemented under classical negation</DL>
</DD>
</DL>
<HR>

<A NAME="getDefaultComplementNNF()"><!-- --></A><H3>
getDefaultComplementNNF</H3>
<PRE>
<A HREF="../../../../../org/semanticweb/kaon2/api/logic/Formula.html" title="interface in org.semanticweb.kaon2.api.logic">Formula</A> <B>getDefaultComplementNNF</B>()</PRE>
<DL>
<DD>Returns the negation-normal form of this formula complemented under default negation.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the negation-normal form of this formula complemented under default negation</DL>
</DD>
</DL>
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