Class AnomalyFactory

java.lang.Object

org.tribuo.anomaly.AnomalyFactory

All Implemented Interfaces:

com.oracle.labs.mlrg.olcut.config.Configurable, com.oracle.labs.mlrg.olcut.provenance.Provenancable<OutputFactoryProvenance>, Serializable, OutputFactory<Event>

public final class AnomalyFactory
extends Object
implements OutputFactory<Event>

A factory for generating events.

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	AnomalyFactory.AnomalyFactoryProvenance	Provenance for AnomalyFactory.

Field Summary

Fields

Modifier and Type	Field	Description
static final Event	ANOMALOUS_EVENT	The anomalous event.
static final Event	EXPECTED_EVENT	The expected event.
static final Event	UNKNOWN_EVENT	The unknown event.

Constructor Summary

Constructors

Constructor	Description
AnomalyFactory()

Method Summary

Modifier and Type	Method	Description
ImmutableOutputInfo<Event>	constructInfoForExternalModel(Map<Event,Integer> mapping)	Creates an ImmutableOutputInfo from the supplied mapping.
MutableOutputInfo<Event>	generateInfo()	Generates the appropriate MutableOutputInfo so the output values can be tracked by a Dataset or other aggregate.
<V> Event	generateOutput(V label)	Parses the V and generates the appropriate Output value.
Evaluator<Event, AnomalyEvaluation>	getEvaluator()	Gets an Evaluator suitable for measuring performance of predictions for the Output subclass.
OutputFactoryProvenance	getProvenance()
Event	getUnknownOutput()	Returns the singleton unknown output of type T which can be used for prediction time examples.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.oracle.labs.mlrg.olcut.config.Configurable

postConfig

Methods inherited from interface org.tribuo.OutputFactory

generateOutputs

Field Details

UNKNOWN_EVENT

public static final Event UNKNOWN_EVENT

The unknown event. Used at inference time.

EXPECTED_EVENT

public static final Event EXPECTED_EVENT

The expected event. Used for things which are not anomalous.

ANOMALOUS_EVENT

public static final Event ANOMALOUS_EVENT

The anomalous event. It's anomalous.

Constructor Details

AnomalyFactory

public AnomalyFactory()

Method Details

generateOutput

public <V> Event generateOutput(V label)

Description copied from interface: OutputFactory

Parses the V and generates the appropriate Output value.

Most implementations call toString on the label before parsing it, but this is not required.

Specified by:

generateOutput in interface OutputFactory<Event>

Type Parameters:

V - The type of the input value.

Parameters:

label - An input value.

Returns:

The parsed Output as an instance of T.

getUnknownOutput

public Event getUnknownOutput()

Description copied from interface: OutputFactory

Returns the singleton unknown output of type T which can be used for prediction time examples.

Specified by:

getUnknownOutput in interface OutputFactory<Event>

Returns:

An unknown output.

generateInfo

public MutableOutputInfo<Event> generateInfo()

Description copied from interface: OutputFactory

Generates the appropriate MutableOutputInfo so the output values can be tracked by a Dataset or other aggregate.

Specified by:

generateInfo in interface OutputFactory<Event>

Returns:

The appropriate subclass of MutableOutputInfo initialised to zero.

constructInfoForExternalModel

public ImmutableOutputInfo<Event> constructInfoForExternalModel(Map<Event,Integer> mapping)

Description copied from interface: OutputFactory

Creates an ImmutableOutputInfo from the supplied mapping. Requires that the mapping is dense in the integers [0,mapping.size()) and each mapping is unique.

This call is used to import external models, and should not be used for other purposes.

Specified by:

constructInfoForExternalModel in interface OutputFactory<Event>

Parameters:

mapping - The mapping to use.

Returns:

The appropriate subclass of ImmutableOutputInfo with a single observation of each element.

getEvaluator

public Evaluator<Event, AnomalyEvaluation> getEvaluator()

Description copied from interface: OutputFactory

Gets an Evaluator suitable for measuring performance of predictions for the Output subclass.

Evaluator instances are thread safe and immutable, and commonly this is a singleton stored in the OutputFactory implementation.

Specified by:

getEvaluator in interface OutputFactory<Event>

Returns:

An evaluator.

getProvenance

public OutputFactoryProvenance getProvenance()

Specified by:

getProvenance in interface com.oracle.labs.mlrg.olcut.provenance.Provenancable<OutputFactoryProvenance>