Uses of Interface
weka.core.WeightedInstancesHandler
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Uses of WeightedInstancesHandler in weka.classifiers.bayes
Classes in weka.classifiers.bayes that implement WeightedInstancesHandler Modifier and Type Class Description classBayesNetBayes Network learning using various search algorithms and quality measures.
Base class for a Bayes Network classifier.classNaiveBayesClass for a Naive Bayes classifier using estimator classes.classNaiveBayesMultinomialClass for building and using a multinomial Naive Bayes classifier.classNaiveBayesMultinomialTextMultinomial naive bayes for text data.classNaiveBayesMultinomialUpdateableClass for building and using an updateable multinomial Naive Bayes classifier.classNaiveBayesUpdateableClass for a Naive Bayes classifier using estimator classes. -
Uses of WeightedInstancesHandler in weka.classifiers.bayes.net
Classes in weka.classifiers.bayes.net that implement WeightedInstancesHandler Modifier and Type Class Description classBayesNetGeneratorBayes Network learning using various search algorithms and quality measures.
Base class for a Bayes Network classifier.classBIFReaderBuilds a description of a Bayes Net classifier stored in XML BIF 0.3 format.
For more details on XML BIF see:
Fabio Cozman, Marek Druzdzel, Daniel Garcia (1998).classEditableBayesNetBayes Network learning using various search algorithms and quality measures.
Base class for a Bayes Network classifier. -
Uses of WeightedInstancesHandler in weka.classifiers.functions
Classes in weka.classifiers.functions that implement WeightedInstancesHandler Modifier and Type Class Description classGaussianProcesses* Implements Gaussian processes for regression without hyperparameter-tuning.classLinearRegressionClass for using linear regression for prediction.classLogisticClass for building and using a multinomial logistic regression model with a ridge estimator.
There are some modifications, however, compared to the paper of leCessie and van Houwelingen(1992):
If there are k classes for n instances with m attributes, the parameter matrix B to be calculated will be an m*(k-1) matrix.
The probability for class j with the exception of the last class is
Pj(Xi) = exp(XiBj)/((sum[j=1..(k-1)]exp(Xi*Bj))+1)
The last class has probability
1-(sum[j=1..(k-1)]Pj(Xi))
= 1/((sum[j=1..(k-1)]exp(Xi*Bj))+1)
The (negative) multinomial log-likelihood is thus:
L = -sum[i=1..n]{
sum[j=1..(k-1)](Yij * ln(Pj(Xi)))
+(1 - (sum[j=1..(k-1)]Yij))
* ln(1 - sum[j=1..(k-1)]Pj(Xi))
} + ridge * (B^2)
In order to find the matrix B for which L is minimised, a Quasi-Newton Method is used to search for the optimized values of the m*(k-1) variables.classMultilayerPerceptronA classifier that uses backpropagation to learn a multi-layer perceptron to classify instances.classSGDTextImplements stochastic gradient descent for learning a linear binary class SVM or binary class logistic regression on text data.classSimpleLinearRegressionLearns a simple linear regression model.classSimpleLogisticClassifier for building linear logistic regression models.classSMOImplements John Platt's sequential minimal optimization algorithm for training a support vector classifier.
This implementation globally replaces all missing values and transforms nominal attributes into binary ones.classSMOregSMOreg implements the support vector machine for regression. -
Uses of WeightedInstancesHandler in weka.classifiers.lazy
Classes in weka.classifiers.lazy that implement WeightedInstancesHandler Modifier and Type Class Description classIBkK-nearest neighbours classifier.classLWLLocally weighted learning. -
Uses of WeightedInstancesHandler in weka.classifiers.meta
Classes in weka.classifiers.meta that implement WeightedInstancesHandler Modifier and Type Class Description classAdaBoostM1Class for boosting a nominal class classifier using the Adaboost M1 method.classAdditiveRegressionMeta classifier that enhances the performance of a regression base classifier.classAttributeSelectedClassifierDimensionality of training and test data is reduced by attribute selection before being passed on to a classifier.classBaggingClass for bagging a classifier to reduce variance.classClassificationViaRegressionClass for doing classification using regression methods.classCostSensitiveClassifierA metaclassifier that makes its base classifier cost sensitive.classFilteredClassifierClass for running an arbitrary classifier on data that has been passed through an arbitrary filter.classLogitBoostClass for performing additive logistic regression.classMultiClassClassifierA metaclassifier for handling multi-class datasets with 2-class classifiers.classMultiClassClassifierUpdateableA metaclassifier for handling multi-class datasets with 2-class classifiers.classRandomCommitteeClass for building an ensemble of randomizable base classifiers.classRandomizableFilteredClassifierClass for running an arbitrary classifier on data that has been passed through an arbitrary filter.classRandomSubSpaceThis method constructs a decision tree based classifier that maintains highest accuracy on training data and improves on generalization accuracy as it grows in complexity.classVoteClass for combining classifiers.classWeightedInstancesHandlerWrapperGeneric wrapper around any classifier to enable weighted instances support.
Uses resampling with weights if the base classifier is not implementing the weka.core.WeightedInstancesHandler interface and there are instance weights other 1.0 present. -
Uses of WeightedInstancesHandler in weka.classifiers.misc
Classes in weka.classifiers.misc that implement WeightedInstancesHandler Modifier and Type Class Description classInputMappedClassifierWrapper classifier that addresses incompatible training and test data by building a mapping between the training data that a classifier has been built with and the incoming test instances' structure. -
Uses of WeightedInstancesHandler in weka.classifiers.rules
Classes in weka.classifiers.rules that implement WeightedInstancesHandler Modifier and Type Class Description classDecisionTableClass for building and using a simple decision table majority classifier.
For more information see:
Ron Kohavi: The Power of Decision Tables.classJRipThis class implements a propositional rule learner, Repeated Incremental Pruning to Produce Error Reduction (RIPPER), which was proposed by William W.classJRip.AntdThe single antecedent in the rule, which is composed of an attribute and the corresponding value.classJRip.NominalAntdThe antecedent with nominal attributeclassJRip.NumericAntdThe antecedent with numeric attributeclassJRip.RipperRuleThis class implements a single rule that predicts specified class.classPARTClass for generating a PART decision list.classRuleAbstract class of generic ruleclassZeroRClass for building and using a 0-R classifier. -
Uses of WeightedInstancesHandler in weka.classifiers.trees
Classes in weka.classifiers.trees that implement WeightedInstancesHandler Modifier and Type Class Description classDecisionStumpClass for building and using a decision stump.classHoeffdingTreeA Hoeffding tree (VFDT) is an incremental, anytime decision tree induction algorithm that is capable of learning from massive data streams, assuming that the distribution generating examples does not change over time.classJ48Class for generating a pruned or unpruned C4.5 decision tree.classRandomForestClass for constructing a forest of random trees.
For more information see:
Leo Breiman (2001).classRandomTreeClass for constructing a tree that considers K randomly chosen attributes at each node.classREPTreeFast decision tree learner. -
Uses of WeightedInstancesHandler in weka.classifiers.trees.lmt
Classes in weka.classifiers.trees.lmt that implement WeightedInstancesHandler Modifier and Type Class Description classLMTNodeClass for logistic model tree structure.classLogisticBaseBase/helper class for building logistic regression models with the LogitBoost algorithm. -
Uses of WeightedInstancesHandler in weka.clusterers
Classes in weka.clusterers that implement WeightedInstancesHandler Modifier and Type Class Description classEMSimple EM (expectation maximisation) class.
EM assigns a probability distribution to each instance which indicates the probability of it belonging to each of the clusters.classMakeDensityBasedClustererClass for wrapping a Clusterer to make it return a distribution and density.classSimpleKMeansCluster data using the k means algorithm. -
Uses of WeightedInstancesHandler in weka.core.converters
Classes in weka.core.converters that implement WeightedInstancesHandler Modifier and Type Class Description classArffSaverWrites to a destination in arff text format.classJSONSaverWrites to a destination that is in JSON format.
The data can be compressed with gzip, in order to save space.
For more information, see JSON homepage:
http://www.json.org/classSerializedInstancesSaverSerializes the instances to a file with extension bsi.classXRFFSaverWrites to a destination that is in the XML version of the ARFF format. -
Uses of WeightedInstancesHandler in weka.filters
Classes in weka.filters that implement WeightedInstancesHandler Modifier and Type Class Description classAllFilterA simple instance filter that passes all instances directly through.classMultiFilterApplies several filters successively.classRenameRelationA simple filter that allows the relation name of a set of instances to be altered in various ways. -
Uses of WeightedInstancesHandler in weka.filters.supervised.attribute
Classes in weka.filters.supervised.attribute that implement WeightedInstancesHandler Modifier and Type Class Description classAddClassificationA filter for adding the classification, the class distribution and an error flag to a dataset with a classifier.classAttributeSelectionA supervised attribute filter that can be used to select attributes.classClassConditionalProbabilitiesConverts the values of nominal and/or numeric attributes into class conditional probabilities.classClassOrderChanges the order of the classes so that the class values are no longer of in the order specified in the header.classDiscretizeAn instance filter that discretizes a range of numeric attributes in the dataset into nominal attributes.classMergeNominalValuesMerges values of all nominal attributes among the specified attributes, excluding the class attribute, using the CHAID method, but without considering re-splitting of merged subsets.classNominalToBinaryConverts all nominal attributes into binary numeric attributes.classPartitionMembership* A filter that uses a PartitionGenerator to generate partition membership values; filtered instances are composed of these values plus the class attribute (if set in the input data) and rendered as sparse instances. -
Uses of WeightedInstancesHandler in weka.filters.supervised.instance
Classes in weka.filters.supervised.instance that implement WeightedInstancesHandler Modifier and Type Class Description classClassBalancerReweights the instances in the data so that each class has the same total weight. -
Uses of WeightedInstancesHandler in weka.filters.unsupervised.attribute
Classes in weka.filters.unsupervised.attribute that implement WeightedInstancesHandler Modifier and Type Class Description classAbstractTimeSeriesAn abstract instance filter that assumes instances form time-series data and performs some merging of attribute values in the current instance with attribute attribute values of some previous (or future) instance.classAddAn instance filter that adds a new attribute to the dataset.classAddClusterA filter that adds a new nominal attribute representing the cluster assigned to each instance by the specified clustering algorithm.
Either the clustering algorithm gets built with the first batch of data or one specifies are serialized clusterer model file to use instead.classAddExpressionAn instance filter that creates a new attribute by applying a mathematical expression to existing attributes.classAddIDAn instance filter that adds an ID attribute to the dataset.classAddUserFieldsA filter that adds new attributes with user specified type and constant value.classAddValuesAdds the labels from the given list to an attribute if they are missing.classCenterCenters all numeric attributes in the given dataset to have zero mean (apart from the class attribute, if set).classChangeDateFormatChanges the date format used by a date attribute.classClassAssignerFilter that can set and unset the class index.classClusterMembershipA filter that uses a density-based clusterer to generate cluster membership values; filtered instances are composed of these values plus the class attribute (if set in the input data).classCopyAn instance filter that copies a range of attributes in the dataset.classDateToNumericA filter for turning date attributes into numeric ones.classDiscretizeAn instance filter that discretizes a range of numeric attributes in the dataset into nominal attributes.classFirstOrderThis instance filter takes a range of N numeric attributes and replaces them with N-1 numeric attributes, the values of which are the difference between consecutive attribute values from the original instance.classFixedDictionaryStringToWordVectorConverts String attributes into a set of attributes representing word occurrence (depending on the tokenizer) information from the text contained in the strings.classMakeIndicatorA filter that creates a new dataset with a Boolean attribute replacing a nominal attribute.classMathExpressionModify numeric attributes according to a given mathematical expression.classMergeInfrequentNominalValuesMerges all values of the specified nominal attributes that are insufficiently frequent.classMergeManyValuesMerges many values of a nominal attribute into one value.classMergeTwoValuesMerges two values of a nominal attribute into one value.classNominalToBinaryConverts all nominal attributes into binary numeric attributes.classNominalToStringConverts a nominal attribute (i.e.classNormalizeNormalizes all numeric values in the given dataset (apart from the class attribute, if set).classNumericCleanerA filter that 'cleanses' the numeric data from values that are too small, too big or very close to a certain value, and sets these values to a pre-defined default.classNumericToBinaryConverts all numeric attributes into binary attributes (apart from the class attribute, if set): if the value of the numeric attribute is exactly zero, the value of the new attribute will be zero.classNumericToDateA filter for turning numeric attributes into date attributes.classNumericToNominalA filter for turning numeric attributes into nominal ones.classNumericTransformTransforms numeric attributes using a given transformation method.classObfuscateA simple instance filter that renames the relation, all attribute names and all nominal attribute values.classOrdinalToNumericAn attribute filter that converts ordinal nominal attributes into numeric ones
Valid options are:classPartitionedMultiFilterA filter that applies filters on subsets of attributes and assembles the output into a new dataset.classPKIDiscretizeDiscretizes numeric attributes using equal frequency binning and forces the number of bins to be equal to the square root of the number of values of the numeric attribute.
For more information, see:
Ying Yang, Geoffrey I.classRandomProjectionReduces the dimensionality of the data by projecting it onto a lower dimensional subspace using a random matrix with columns of unit length.classRandomSubsetChooses a random subset of non-class attributes, either an absolute number or a percentage.classRemoveAn filter that removes a range of attributes from the dataset.classRemoveByNameRemoves attributes based on a regular expression matched against their names.classRemoveTypeRemoves attributes of a given type.classRemoveUselessThis filter removes attributes that do not vary at all or that vary too much.classRenameAttributeThis filter is used for renaming attributes.
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.htmlclassRenameNominalValuesRenames the values of nominal attributes.classReorderA filter that generates output with a new order of the attributes.classReplaceMissingValuesReplaces all missing values for nominal and numeric attributes in a dataset with the modes and means from the training data.classReplaceMissingWithUserConstantReplaces all missing values for nominal, string, numeric and date attributes in the dataset with user-supplied constant values.classReplaceWithMissingValueA filter that can be used to introduce missing values in a dataset.classSortLabelsA simple filter for sorting the labels of nominal attributes.classStandardizeStandardizes all numeric attributes in the given dataset to have zero mean and unit variance (apart from the class attribute, if set).classStringToNominalConverts a range of string attributes (unspecified number of values) to nominal (set number of values).classStringToWordVectorConverts string attributes into a set of numeric attributes representing word occurrence information from the text contained in the strings.classSwapValuesSwaps two values of a nominal attribute.classTimeSeriesDeltaAn instance filter that assumes instances form time-series data and replaces attribute values in the current instance with the difference between the current value and the equivalent attribute attribute value of some previous (or future) instance.classTimeSeriesTranslateAn instance filter that assumes instances form time-series data and replaces attribute values in the current instance with the equivalent attribute values of some previous (or future) instance.classTransposeTransposes the data: instances become attributes and attributes become instances. -
Uses of WeightedInstancesHandler in weka.filters.unsupervised.instance
Classes in weka.filters.unsupervised.instance that implement WeightedInstancesHandler Modifier and Type Class Description classNonSparseToSparseAn instance filter that converts all incoming instances into sparse format.classRandomizeRandomly shuffles the order of instances passed through it.classRemoveDuplicatesRemoves all duplicate instances from the first batch of data it receives.classRemoveMisclassifiedA filter that removes instances which are incorrectly classified.classRemoveRangeA filter that removes a given range of instances of a dataset.classRemoveWithValuesFilters instances according to the value of an attribute.classSparseToNonSparseAn instance filter that converts all incoming sparse instances into non-sparse format.classSubsetByExpressionFilters 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)
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