Package org.tribuo.anomaly.libsvm

Class LibSVMAnomalyModel

java.lang.Object

org.tribuo.Model<T>

org.tribuo.common.libsvm.LibSVMModel<Event>

org.tribuo.anomaly.libsvm.LibSVMAnomalyModel

All Implemented Interfaces:

com.oracle.labs.mlrg.olcut.provenance.Provenancable<ModelProvenance>, Serializable, ProtoSerializable<org.tribuo.protos.core.ModelProto>

public class LibSVMAnomalyModel
extends LibSVMModel<Event>

An anomaly detection model that uses an underlying libSVM model to make the predictions.

See:

 Chang CC, Lin CJ.
 "LIBSVM: a library for Support Vector Machines"
 ACM transactions on intelligent systems and technology (TIST), 2011.
 

and for the anomaly detection algorithm:

 Schölkopf B, Platt J, Shawe-Taylor J, Smola A J, Williamson R C.
 "Estimating the support of a high-dimensional distribution"
 Neural Computation, 2001, 1443-1471.
 

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final int	CURRENT_VERSION	Protobuf serialization version.

Fields inherited from class org.tribuo.common.libsvm.LibSVMModel

models

Fields inherited from class org.tribuo.Model

ALL_OUTPUTS, BIAS_FEATURE, featureIDMap, generatesProbabilities, name, outputIDInfo, provenance, provenanceOutput

Fields inherited from interface org.tribuo.protos.ProtoSerializable

DESERIALIZATION_METHOD_NAME, PROVENANCE_SERIALIZER

Method Summary

Modifier and Type	Method	Description
protected LibSVMAnomalyModel	copy(String newName, ModelProvenance newProvenance)	Copies a model, replacing its provenance and name with the supplied values.
static LibSVMAnomalyModel	deserializeFromProto(int version, String className, com.google.protobuf.Any message)	Deserialization factory.
int	getNumberOfSupportVectors()	Returns the number of support vectors.
Prediction<Event>	predict(Example<Event> example)	Uses the model to predict the output for a single example.
org.tribuo.protos.core.ModelProto	serialize()	Serializes this object to a protobuf.

Methods inherited from class org.tribuo.common.libsvm.LibSVMModel

copyModel, deserializeModel, deserializeParameters, getExcuse, getInnerModels, getModel, getTopFeatures, modelEquals, serializeModel, serializeParameters

Methods inherited from class org.tribuo.Model

castModel, copy, createDataCarrier, deserialize, deserializeFromFile, deserializeFromStream, generatesProbabilities, getExcuses, getFeatureIDMap, getName, getOutputIDInfo, getProvenance, innerPredict, predict, predict, serializeToFile, serializeToStream, setName, toString, validate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

CURRENT_VERSION

public static final int CURRENT_VERSION

Protobuf serialization version.

See Also:

• Constant Field Values

Method Details

deserializeFromProto

public static LibSVMAnomalyModel deserializeFromProto(int version,
 String className,
 com.google.protobuf.Any message)
                                               throws com.google.protobuf.InvalidProtocolBufferException

Deserialization factory.

Parameters:

version - The serialized object version.

className - The class name.

message - The serialized data.

Returns:

The deserialized object.

Throws:

com.google.protobuf.InvalidProtocolBufferException - If the protobuf could not be parsed from the message.

getNumberOfSupportVectors

public int getNumberOfSupportVectors()

Returns the number of support vectors.

Returns:

The number of support vectors.

predict

public Prediction<Event> predict(Example<Event> example)

Description copied from class: Model

Uses the model to predict the output for a single example.

predict does not mutate the example.

Throws IllegalArgumentException if the example has no features or no feature overlap with the model.

Specified by:

predict in class Model<Event>

Parameters:

example - the example to predict.

Returns:

the result of the prediction.

copy

protected LibSVMAnomalyModel copy(String newName,
 ModelProvenance newProvenance)

Description copied from class: Model

Copies a model, replacing its provenance and name with the supplied values.

Used to provide the provenance removal functionality.

Specified by:

copy in class Model<Event>

Parameters:

newName - The new name.

newProvenance - The new provenance.

Returns:

A copy of the model.

serialize

public org.tribuo.protos.core.ModelProto serialize()

Description copied from interface: ProtoSerializable

Serializes this object to a protobuf.

Specified by:

serialize in interface ProtoSerializable<org.tribuo.protos.core.ModelProto>

Overrides:

serialize in class Model<Event>

Returns:

The protobuf.