| Package | Description |
|---|---|
| weka.filters | |
| weka.filters.supervised.attribute | |
| weka.filters.supervised.instance | |
| weka.filters.unsupervised.attribute | |
| weka.filters.unsupervised.instance |
| Modifier and Type | Class and Description |
|---|---|
class |
MultiFilter
Applies several filters successively.
|
class |
SimpleBatchFilter
This filter is a superclass for simple batch filters.
|
class |
SimpleStreamFilter
This filter is a superclass for simple stream filters.
|
| Modifier and Type | Class and Description |
|---|---|
class |
AddClassification
A filter for adding the classification, the class
distribution and an error flag to a dataset with a classifier.
|
class |
ClassConditionalProbabilities
Converts the values of nominal and/or numeric attributes into class conditional probabilities.
|
class |
MergeNominalValues
Merges values of all nominal attributes among the
specified attributes, excluding the class attribute, using the CHAID method,
but without considering to re-split merged subsets.
|
| Modifier and Type | Class and Description |
|---|---|
class |
ClassBalancer
Reweights the instances in the data so that each class has the same total weight.
|
| Modifier and Type | Class and Description |
|---|---|
class |
CartesianProduct
A filter for performing the Cartesian product of a set of nominal attributes.
|
class |
ClassAssigner
Filter that can set and unset the class index.
|
class |
FixedDictionaryStringToWordVector
Converts String attributes into a set of attributes
representing word occurrence (depending on the tokenizer) information from
the text contained in the strings.
|
class |
InterquartileRange
A filter for detecting outliers and extreme values
based on interquartile ranges.
|
class |
KernelFilter
Converts the given set of predictor variables into
a kernel matrix.
|
class |
MergeInfrequentNominalValues
Merges all values of the specified nominal attribute that are sufficiently infrequent.
|
class |
NumericCleaner
A filter that 'cleanses' the numeric data from
values that are too small, too big or very close to a certain value (e.g., 0)
and sets these values to a pre-defined default.
|
class |
NumericToNominal
A filter for turning numeric attributes into
nominal ones.
|
class |
PartitionedMultiFilter
A filter that applies filters on subsets of
attributes and assembles the output into a new dataset.
|
class |
RandomSubset
Chooses a random subset of attributes, either an absolute number or a percentage.
|
class |
RemoveByName
Removes attributes based on a regular expression
matched against their names.
|
class |
RenameAttribute
This filter is used for renaming attribute names.
Regular expressions can be used in the matching and replacing. See Javadoc of java.util.regex.Pattern class for more information: http://java.sun.com/javase/6/docs/api/java/util/regex/Pattern.html Valid options are: |
class |
ReplaceWithMissingValue
A filter that can be used to introduce missing values in a dataset.
|
class |
SortLabels
A simple filter for sorting the labels of nominal
attributes.
|
class |
Transpose
Transposes the data: instances become attributes and attributes become instances.
|
| Modifier and Type | Class and Description |
|---|---|
class |
RemoveDuplicates
Removes all duplicate instances from the first batch of data it receives.
|
class |
SubsetByExpression
Filters instances according to a user-specified expression.
Examples: - extracting only mammals and birds from the 'zoo' UCI dataset: (CLASS is 'mammal') or (CLASS is 'bird') - extracting only animals with at least 2 legs from the 'zoo' UCI dataset: (ATT14 >= 2) - extracting only instances with non-missing 'wage-increase-second-year' from the 'labor' UCI dataset: not ismissing(ATT3) Valid options are: |
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