Package weka.core

Interface Summary

Interface	Description
AdditionalMeasureProducer	Interface to something that can produce measures other than those calculated by evaluation modules.
Aggregateable<E>	Interface to something that can aggregate an object of the same type with itself.
BatchPredictor	Interface to something that can produce predictions in a batch manner when presented with a set of Instances.
CapabilitiesHandler	Classes implementing this interface return their capabilities in regards to datasets.
CapabilitiesIgnorer	Classes implementing this interface make it possible to turn off capabilities checking.
CommandlineRunnable	Interface to something that can be run from the command line.
Copyable	Interface implemented by classes that can produce "shallow" copies of their objects.
CustomDisplayStringProvider	For classes that do not implement the OptionHandler interface and want to provide a custom display string in the GenericObjectEditor, which is more descriptive than the class name.
DistanceFunction	Interface for any class that can compute and return distances between two instances.
Drawable	Interface to something that can be drawn as a graph.
EnvironmentHandler	Interface for something that can utilize environment variables.
Instance	Interface representing an instance.
LogHandler	Interface to something that can output messages to a log
Matchable	Interface to something that can be matched with tree matching algorithms.
MultiInstanceCapabilitiesHandler	Multi-Instance classifiers can specify an additional Capabilities object for the data in the relational attribute, since the format of multi-instance data is fixed to "bag/NOMINAL,data/RELATIONAL,class".
OptionHandler	Interface to something that understands options.
PartitionGenerator	This interface can be implemented by algorithms that generate a partition of the instance space (e.g., decision trees).
Randomizable	Interface to something that has random behaviour that is able to be seeded with an integer.
RevisionHandler	For classes that should return their source control revision.
Summarizable	Interface to something that provides a short textual summary (as opposed to toString() which is usually a fairly complete description) of itself.
TechnicalInformationHandler	For classes that are based on some kind of publications.
ThreadSafe	Interface to something that is thread safe
Undoable	Interface implemented by classes that support undo.
WeightedAttributesHandler	Interface to something that makes use of the information provided by attribute weights.
WeightedInstancesHandler	Interface to something that makes use of the information provided by instance weights.

Class Summary

Class	Description
AbstractInstance	Abstract class providing common functionality for the original instance implementations.
AlgVector	Class for performing operations on an algebraic vector of floating-point values.
AllJavadoc	Applies all known Javadoc-derived classes to a source file.
Attribute	Class for handling an attribute.
AttributeLocator	This class locates and records the indices of a certain type of attributes, recursively in case of Relational attributes.
AttributeMetaInfo
AttributeStats	A Utility class that contains summary information on an the values that appear in a dataset for a particular attribute.
BinarySparseInstance	Class for storing a binary-data-only instance as a sparse vector.
Capabilities	A class that describes the capabilites (e.g., handling certain types of attributes, missing values, types of classes, etc.) of a specific classifier.
CapabilitiesUtils	Helper class for Capabilities.
ChebyshevDistance	Implements the Chebyshev distance.
Check	Abstract general class for testing in Weka.
CheckGOE	Simple command line checking of classes that are editable in the GOE.
CheckOptionHandler	Simple command line checking of classes that implement OptionHandler.
CheckScheme	Abstract general class for testing schemes in Weka.
CheckScheme.PostProcessor	a class for postprocessing the test-data
ClassCache	A singleton that stores all classes on the classpath.
ClassCache.ClassFileFilter	For filtering classes.
ClassCache.DirectoryFilter	For filtering classes.
ClassDiscovery	This class is used for discovering classes that implement a certain interface or a derived from a certain class.
ClassDiscovery.StringCompare	compares two strings.
ClassloaderUtil	Utility class that can add jar files to the classpath dynamically.
ConjugateGradientOptimization	This subclass of Optimization.java implements conjugate gradient descent rather than BFGS updates, by overriding findArgmin(), with the same tests for convergence, and applies the same line search code.
ContingencyTables	Class implementing some statistical routines for contingency tables.
Copyright	A class for providing centralized Copyright information.
DateAttributeInfo	Stores information for date attributes.
Debug	A helper class for debug output, logging, clocking, etc.
Debug.Clock	A little helper class for clocking and outputting times.
Debug.DBO	contains debug methods
Debug.Log	A helper class for logging stuff.
Debug.Random	This extended Random class enables one to print the generated random numbers etc., before they are returned.
Debug.SimpleLog	A little, simple helper class for logging stuff.
Debug.Timestamp	A class that can be used for timestamps in files, The toString() method simply returns the associated Date object in a timestamp format.
Defaults	Base class for providing a set of default settings for an application.
DenseInstance	Class for handling an instance.
DictionaryBuilder	Class for building and maintaining a dictionary of terms.
EnumHelper	Helper/wrapper class for obtaining an arbitrary enum value from an arbitrary enum type.
Environment	This class encapsulates a map of all environment and java system properties.
EnvironmentProperties	Extends Properties to allow the value of a system property (if set) to override that which has been loaded/set.
EuclideanDistance	Implementing Euclidean distance (or similarity) function. One object defines not one distance but the data model in which the distances between objects of that data model can be computed. Attention: For efficiency reasons the use of consistency checks (like are the data models of the two instances exactly the same), is low. For more information, see: Wikipedia.
FastVector<E>	Deprecated
FileHelper	Wrapper class for File objects.
FilteredDistance	Applies the given filter before calling the given distance function.
FindWithCapabilities	Locates all classes with certain capabilities.
FontHelper	Wrapper class for Font objects.
GlobalInfoJavadoc	Generates Javadoc comments from the class's globalInfo method.
InheritanceUtils	Helper class for inheritance related operations.
InstanceComparator	A comparator for the Instance class.
Instances	Class for handling an ordered set of weighted instances.
Javadoc	Abstract superclass for classes that generate Javadoc comments and replace the content between certain comment tags.
ListOptions	Lists the options of an OptionHandler
ManhattanDistance	Implements the Manhattan distance (or Taxicab geometry).
Matrix	Deprecated Use weka.core.matrix.Matrix instead - only for backwards compatibility.
Memory	A little helper class for Memory management.
MinkowskiDistance	Implementing Minkowski distance (or similarity) function. One object defines not one distance but the data model in which the distances between objects of that data model can be computed. Attention: For efficiency reasons the use of consistency checks (like are the data models of the two instances exactly the same), is low. For more information, see: Wikipedia.
NominalAttributeInfo	Stores information for nominal and string attributes.
NormalizableDistance	Represents the abstract ancestor for normalizable distance functions, like Euclidean or Manhattan distance.
Optimization	Implementation of Active-sets method with BFGS update to solve optimization problem with only bounds constraints in multi-dimensions.
Option	Class to store information about an option.
OptionHandlerJavadoc	Generates Javadoc comments from the OptionHandler's options.
PluginManager	Class that manages a global map of plugins.
PropertyPath	A helper class for accessing properties in nested objects, e.g., accessing the "getRidge" method of a LinearRegression classifier part of MultipleClassifierCombiner, e.g., Vote.
PropertyPath.Path	Contains a (property) path structure
PropertyPath.PathElement	Represents a single element of a property path
ProtectedProperties	Simple class that extends the Properties class so that the properties are unable to be modified.
Queue	Class representing a FIFO queue.
RandomSample	Class holding static utility methods for drawing random samples.
RandomVariates	Class implementing some simple random variates generator.
Range	Class representing a range of cardinal numbers.
RelationalAttributeInfo	Stores information for relational attributes.
RelationalLocator	This class locates and records the indices of relational attributes,
RepositoryIndexGenerator	Class for generating html index files and supporting text files for a Weka package meta data repository.
ResampleUtils	Helper class for resampling.
ResourceUtils	Helper for resources.
RevisionUtils	Contains utility functions for handling revisions.
SelectedTag	Represents a selected value from a finite set of values, where each value is a Tag (i.e.
SerializationHelper	A helper class for determining serialVersionUIDs and checking whether classes contain one and/or need one.
SerializedObject	Class for storing an object in serialized form in memory.
Settings	Maintains a collection of settings.
Settings.SettingKey	Class implementing a key for a setting.
SingleIndex	Class representing a single cardinal number.
SparseInstance	Class for storing an instance as a sparse vector.
SpecialFunctions	Class implementing some mathematical functions.
Statistics	Class implementing some distributions, tests, etc.
Stopwords	Class that can test whether a given string is a stop word.
StringLocator	This class locates and records the indices of String attributes, recursively in case of Relational attributes.
SystemInfo	This class prints some information about the system setup, like Java version, JVM settings etc.
Tag	A Tag simply associates a numeric ID with a String description.
TechnicalInformation	Used for paper references in the Javadoc and for BibTex generation.
TechnicalInformationHandlerJavadoc	Generates Javadoc comments from the TechnicalInformationHandler's data.
Tee	This class pipelines print/println's to several PrintStreams.
TestInstances	Generates artificial datasets for testing.
Trie	A class representing a Trie data structure for strings.
Trie.TrieIterator	Represents an iterator over a trie
Trie.TrieNode	Represents a node in the trie.
Utils	Class implementing some simple utility methods.
Version	This class contains the version number of the current WEKA release and some methods for comparing another version string.
WekaEnumeration<E>	Class for enumerating an array list's elements.
WekaPackageClassLoaderManager	Class that manages classloaders from individual Weka plugin packages.
WekaPackageLibIsolatingClassLoader	A ClassLoader that loads/finds classes from one Weka plugin package.
WekaPackageManager	Class providing package management and manipulation routines.

Enum Summary

Enum	Description
Capabilities.Capability	enumeration of all capabilities
RevisionUtils.Type	Enumeration of source control types.
TechnicalInformation.Field	the possible fields
TechnicalInformation.Type	the different types of information

Exception Summary

Exception	Description
NoSupportForMissingValuesException	Exception that is raised by an object that is unable to process data with missing values.
UnassignedClassException	Exception that is raised when trying to use some data that has no class assigned to it, but a class is needed to perform the operation.
UnassignedDatasetException	Exception that is raised when trying to use something that has no reference to a dataset, when one is required.
UnsupportedAttributeTypeException	Exception that is raised by an object that is unable to process some of the attribute types it has been passed.
UnsupportedClassTypeException	Exception that is raised by an object that is unable to process the class type of the data it has been passed.
WekaException	Class for Weka-specific exceptions.

Annotation Types Summary

Annotation Type	Description
OptionMetadata	Method annotation that can be used with scheme parameters to provide a nice display-ready name for the parameter, help information and command-line option details.