| java.lang.Object
 weka.estimators.EstimatorUtils
| EstimatorUtils | | public class EstimatorUtils (Code) | | Contains static utility functions for Estimators.
author:
Gabi Schmidberger (gabi@cs.waikato.ac.nz)
version:
$Revision: 1.3 $ |
| Method Summary | |
| public static String | cutpointsToString(double[] cutPoints, boolean[] cutAndLeft)
| | public static double | findMinDistance(Instances inst, int attrIndex)
| | public static Vector | getInstancesFromClass(Instances data, int attrIndex, int classIndex, double classValue, Instances workData)
Returns a dataset that contains all instances of a certain class value. | | public static Instances | getInstancesFromClass(Instances data, int classIndex, double classValue)
Returns a dataset that contains of all instances of a certain class value. | | public static Instances | getInstancesFromValue(Instances data, int index, double v)
Returns a dataset that contains of all instances of a certain value
for the given attribute. | | public static int | getMinMax(Instances inst, int attrIndex, double[] minMax)
Find the minimum and the maximum of the attribute and return it in
the last parameter.. | | public static void | writeCurve(String f, Estimator est, double min, double max, int numPoints)
Output of an n points of a density curve. | | public static void | writeCurve(String f, Estimator est, Estimator classEst, double classIndex, double min, double max, int numPoints)
Output of an n points of a density curve. |
| cutpointsToString | | public static String cutpointsToString(double[] cutPoints, boolean[] cutAndLeft)(Code) | | Returns a string representing the cutpoints
|
| findMinDistance | | public static double findMinDistance(Instances inst, int attrIndex)(Code) | | Find the minimum distance between values
Parameters:
inst - sorted instances, sorted
Parameters:
attrIndex - index of the attribute, they are sorted after the minimal distance |
| getInstancesFromClass | | public static Vector getInstancesFromClass(Instances data, int attrIndex, int classIndex, double classValue, Instances workData)(Code) | | Returns a dataset that contains all instances of a certain class value.
Parameters:
data - dataset to select the instances from
Parameters:
attrIndex - index of the relevant attribute
Parameters:
classIndex - index of the class attribute
Parameters:
classValue - the relevant class value a dataset with only |
| getInstancesFromClass | | public static Instances getInstancesFromClass(Instances data, int classIndex, double classValue)(Code) | | Returns a dataset that contains of all instances of a certain class value.
Parameters:
data - dataset to select the instances from
Parameters:
classIndex - index of the class attribute
Parameters:
classValue - the class value a dataset with only instances of one class value |
| getInstancesFromValue | | public static Instances getInstancesFromValue(Instances data, int index, double v)(Code) | | Returns a dataset that contains of all instances of a certain value
for the given attribute.
Parameters:
data - dataset to select the instances from
Parameters:
index - the index of the attribute
Parameters:
v - the value a subdataset with only instances of one value for the attribute |
| getMinMax | | public static int getMinMax(Instances inst, int attrIndex, double[] minMax) throws Exception(Code) | | Find the minimum and the maximum of the attribute and return it in
the last parameter..
Parameters:
inst - instances used to build the estimator
Parameters:
attrIndex - index of the attribute
Parameters:
minMax - the array to return minimum and maximum in number of not missing values
exception:
Exception - if parameter minMax wasn't initialized properly |
| writeCurve | | public static void writeCurve(String f, Estimator est, double min, double max, int numPoints) throws Exception(Code) | | Output of an n points of a density curve.
Filename is parameter f + ".curv".
Parameters:
f - string to build filename
Parameters:
est -
Parameters:
min -
Parameters:
max -
Parameters:
numPoints -
throws:
Exception - if something goes wrong |
| writeCurve | | public static void writeCurve(String f, Estimator est, Estimator classEst, double classIndex, double min, double max, int numPoints) throws Exception(Code) | | Output of an n points of a density curve.
Filename is parameter f + ".curv".
Parameters:
f - string to build filename
Parameters:
est -
Parameters:
classEst -
Parameters:
classIndex -
Parameters:
min -
Parameters:
max -
Parameters:
numPoints -
throws:
Exception - if something goes wrong |
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