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Main method for testing this class.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../weka/core/Instance.html">Instance</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/core/SparseInstance.html#mergeInstance(weka.core.Instance)">mergeInstance</A></B>(<A HREF="../../weka/core/Instance.html">Instance</A> inst)</CODE><BR> Merges this instance with the given instance and returns the result.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/core/SparseInstance.html#numAttributes()">numAttributes</A></B>()</CODE><BR> Returns the number of attributes.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/core/SparseInstance.html#numValues()">numValues</A></B>()</CODE><BR> Returns the number of values in the sparse vector.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/core/SparseInstance.html#replaceMissingValues(double[])">replaceMissingValues</A></B>(double[] array)</CODE><BR> Replaces all missing values in the instance with the values contained in the given array.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/core/SparseInstance.html#setValue(int, double)">setValue</A></B>(int attIndex, double value)</CODE><BR> Sets a specific value in the instance to the given value (internal floating-point format).</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/core/SparseInstance.html#setValueSparse(int, double)">setValueSparse</A></B>(int indexOfIndex, double value)</CODE><BR> Sets a specific value in the instance to the given value (internal floating-point format).</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> double[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/core/SparseInstance.html#toDoubleArray()">toDoubleArray</A></B>()</CODE><BR> Returns the values of each attribute as an array of doubles.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/core/SparseInstance.html#toString()">toString</A></B>()</CODE><BR> Returns the description of one instance in sparse format.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> double</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/core/SparseInstance.html#value(int)">value</A></B>(int attIndex)</CODE><BR> Returns an instance's attribute value in internal format.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_weka.core.Instance"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class weka.core.<A HREF="../../weka/core/Instance.html">Instance</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../weka/core/Instance.html#attribute(int)">attribute</A>, <A HREF="../../weka/core/Instance.html#classAttribute()">classAttribute</A>, <A HREF="../../weka/core/Instance.html#classIndex()">classIndex</A>, <A HREF="../../weka/core/Instance.html#classIsMissing()">classIsMissing</A>, <A HREF="../../weka/core/Instance.html#classValue()">classValue</A>, <A HREF="../../weka/core/Instance.html#dataset()">dataset</A>, <A HREF="../../weka/core/Instance.html#deleteAttributeAt(int)">deleteAttributeAt</A>, <A HREF="../../weka/core/Instance.html#enumerateAttributes()">enumerateAttributes</A>, <A HREF="../../weka/core/Instance.html#equalHeaders(weka.core.Instance)">equalHeaders</A>, <A HREF="../../weka/core/Instance.html#insertAttributeAt(int)">insertAttributeAt</A>, <A HREF="../../weka/core/Instance.html#isMissing(weka.core.Attribute)">isMissing</A>, <A HREF="../../weka/core/Instance.html#isMissingSparse(int)">isMissingSparse</A>, <A HREF="../../weka/core/Instance.html#isMissingValue(double)">isMissingValue</A>, <A HREF="../../weka/core/Instance.html#missingValue()">missingValue</A>, <A HREF="../../weka/core/Instance.html#numClasses()">numClasses</A>, <A HREF="../../weka/core/Instance.html#setClassMissing()">setClassMissing</A>, <A HREF="../../weka/core/Instance.html#setClassValue(double)">setClassValue</A>, <A HREF="../../weka/core/Instance.html#setClassValue(java.lang.String)">setClassValue</A>, <A HREF="../../weka/core/Instance.html#setDataset(weka.core.Instances)">setDataset</A>, <A HREF="../../weka/core/Instance.html#setMissing(weka.core.Attribute)">setMissing</A>, <A HREF="../../weka/core/Instance.html#setMissing(int)">setMissing</A>, <A HREF="../../weka/core/Instance.html#setValue(weka.core.Attribute, double)">setValue</A>, <A HREF="../../weka/core/Instance.html#setValue(weka.core.Attribute, java.lang.String)">setValue</A>, <A HREF="../../weka/core/Instance.html#setValue(int, java.lang.String)">setValue</A>, <A HREF="../../weka/core/Instance.html#setWeight(double)">setWeight</A>, <A HREF="../../weka/core/Instance.html#stringValue(weka.core.Attribute)">stringValue</A>, <A HREF="../../weka/core/Instance.html#stringValue(int)">stringValue</A>, <A HREF="../../weka/core/Instance.html#toString(weka.core.Attribute)">toString</A>, <A HREF="../../weka/core/Instance.html#toString(int)">toString</A>, <A HREF="../../weka/core/Instance.html#value(weka.core.Attribute)">value</A>, <A HREF="../../weka/core/Instance.html#valueSparse(int)">valueSparse</A>, <A HREF="../../weka/core/Instance.html#weight()">weight</A></CODE></TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class java.lang.Object</B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><A NAME="field_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Field Detail</B></FONT></TD></TR></TABLE><A NAME="m_Indices"><!-- --></A><H3>m_Indices</H3><PRE>protected int[] <B>m_Indices</B></PRE><DL><DD>The index of the attribute associated with each stored value.</DL><HR><A NAME="m_NumAttributes"><!-- --></A><H3>m_NumAttributes</H3><PRE>protected int <B>m_NumAttributes</B></PRE><DL><DD>The maximum number of values that can be stored.</DL><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Constructor Detail</B></FONT></TD></TR></TABLE><A NAME="SparseInstance()"><!-- --></A><H3>SparseInstance</H3><PRE>protected <B>SparseInstance</B>()</PRE><DL></DL><HR><A NAME="SparseInstance(weka.core.Instance)"><!-- --></A><H3>SparseInstance</H3><PRE>public <B>SparseInstance</B>(<A HREF="../../weka/core/Instance.html">Instance</A> instance)</PRE><DL><DD>Constructor that generates a sparse instance from the given instance. Reference to the dataset is set to null. (ie. the instance doesn't have access to information about the attribute types)<DD><DL><DT><B>Parameters:</B><DD><CODE>instance</CODE> - the instance from which the attribute values and the weight are to be copied</DL></DD></DL><HR><A NAME="SparseInstance(weka.core.SparseInstance)"><!-- --></A><H3>SparseInstance</H3><PRE>public <B>SparseInstance</B>(<A HREF="../../weka/core/SparseInstance.html">SparseInstance</A> instance)</PRE><DL><DD>Constructor that copies the info from the given instance. Reference to the dataset is set to null. (ie. the instance doesn't have access to information about the attribute types)<DD><DL><DT><B>Parameters:</B><DD><CODE>instance</CODE> - the instance from which the attribute info is to be copied</DL></DD></DL><HR><A NAME="SparseInstance(double, double[])"><!-- --></A><H3>SparseInstance</H3><PRE>public <B>SparseInstance</B>(double weight, double[] attValues)</PRE><DL><DD>Constructor that generates a sparse instance from the given parameters. Reference to the dataset is set to null. (ie. the instance doesn't have access to information about the attribute types)<DD><DL><DT><B>Parameters:</B><DD><CODE>weight</CODE> - the instance's weight<DD><CODE>attValues</CODE> - a vector of attribute values</DL></DD></DL><HR><A NAME="SparseInstance(double, double[], int[], int)"><!-- --></A><H3>SparseInstance</H3><PRE>public <B>SparseInstance</B>(double weight, double[] attValues, int[] indices, int maxNumValues)</PRE><DL><DD>Constructor that inititalizes instance variable with given values. Reference to the dataset is set to null. (ie. the instance doesn't have access to information about the attribute types)<DD><DL><DT><B>Parameters:</B><DD><CODE>weight</CODE> - the instance's weight<DD><CODE>attValues</CODE> - a vector of attribute values (just the ones to be stored)<DD><CODE>indices</CODE> - the indices of the given values in the full vector<DD><CODE>maxNumValues</CODE> - the maximium number of values that can be stored</DL></DD></DL><HR><A NAME="SparseInstance(int)"><!-- --></A><H3>SparseInstance</H3><PRE>public <B>SparseInstance</B>(int numAttributes)</PRE><DL><DD>Constructor of an instance that sets weight to one, all values to be missing, and the reference to the dataset to null. (ie. the instance doesn't have access to information about the attribute types)<DD><DL><DT><B>Parameters:</B><DD><CODE>numAttributes</CODE> - the size of the instance</DL></DD></DL><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Method Detail</B></FONT></TD></TR></TABLE><A NAME="attributeSparse(int)"><!-- --></A><H3>attributeSparse</H3><PRE>public <A HREF="../../weka/core/Attribute.html">Attribute</A> <B>attributeSparse</B>(int indexOfIndex)</PRE><DL><DD>Returns the attribute associated with the internal index.<DD><DL><DT><B>Overrides:</B><DD><CODE><A HREF="../../weka/core/Instance.html#attributeSparse(int)">attributeSparse</A></CODE> in class <CODE><A HREF="../../weka/core/Instance.html">Instance</A></CODE></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>indexOfIndex</CODE> - the index of the attribute's index<DT><B>Returns:</B><DD>the attribute at the given position<DT><B>Throws:</B><DD><CODE><A HREF="../../weka/core/UnassignedDatasetException.html">UnassignedDatasetException</A></CODE> - if instance doesn't have access to a dataset</DL></DD></DL><HR><A NAME="copy()"><!-- --></A><H3>copy</H3><PRE>public java.lang.Object <B>copy</B>()</PRE><DL><DD>Produces a shallow copy of this instance. The copy has access to the same dataset. (if you want to make a copy⌨️ 快捷键说明
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