hex

Class ModelMetrics

java.lang.Object

water.Iced<T>

water.Keyed

hex.ModelMetrics

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, java.lang.Cloneable, Freezable

public final class ModelMetrics
extends Keyed

Container to hold the metric for a model as scored on a specific frame. The MetricBuilder class is used in a hot inner-loop of a Big Data pass, and when given a class-distribution, can be used to compute CM's, and AUC's "on the fly" during ModelBuilding - or after-the-fact with a Model and a new Frame to be scored.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ModelMetrics.MetricBuilder Class used to compute AUCs, CMs & HRs "on the fly" during other passes over Big Data.

Field Summary

Fields

Modifier and Type	Field and Description
AUCData	_aucdata
ConfusionMatrix	_cm
HitRatio	_hr
double	_mse
double	_sigma

Fields inherited from class water.Keyed

_key

Constructor Summary

Constructors

Constructor and Description
ModelMetrics(Model model, Frame frame)

Method Summary

Methods

Modifier and Type	Method and Description
protected long	checksum_impl() High-quality 64-bit checksum of the content of the object.
Frame	frame()
static ModelMetrics	getFromDKV(Model model, Frame frame)
boolean	isForFrame(Frame f)
boolean	isForModel(Model m)
Model	model()
double	r2()
ModelMetricsBase	schema() Externally visible default schema TODO: this is in the wrong layer: the internals should not know anything about the schemas!!! This puts a reverse edge into the dependency graph.

Methods inherited from class water.Keyed

checksum, remove_impl, remove, remove, remove, remove

Methods inherited from class water.Iced

clone, frozenType, read_impl, read, readExternal, readJSON_impl, readJSON, toJsonString, write_impl, write, writeExternal, writeHTML_impl, writeHTML, writeJSON_impl, writeJSON

Methods inherited from class java.lang.Object

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

Field Detail

_sigma

public final double _sigma

_mse

public final double _mse

_aucdata

public final AUCData _aucdata

_cm

public final ConfusionMatrix _cm

_hr

public final HitRatio _hr

Constructor Detail

ModelMetrics

public ModelMetrics(Model model,
            Frame frame)

Method Detail

model

public Model model()

frame

public Frame frame()

r2

public double r2()

schema

public ModelMetricsBase schema()

Externally visible default schema TODO: this is in the wrong layer: the internals should not know anything about the schemas!!! This puts a reverse edge into the dependency graph.

isForModel

public boolean isForModel(Model m)

isForFrame

public boolean isForFrame(Frame f)

getFromDKV

public static ModelMetrics getFromDKV(Model model,
                      Frame frame)

checksum_impl

protected long checksum_impl()

Description copied from class: Keyed

High-quality 64-bit checksum of the content of the object. Similar to hashcode(), but a long to reduce the chance of hash clashes. For composite objects this should be defined using the subcomponents' checksums (or hashcodes if not available). If two Keyed objects have the same checksum() there should be a 1 - 1/2^64 chance that they are the same object by value.

Specified by:

checksum_impl in class Keyed