org.grouplens.lenskit.transform.quantize

Class PreferenceDomainQuantizer

java.lang.Object

org.grouplens.lenskit.transform.quantize.ValueArrayQuantizer

org.grouplens.lenskit.transform.quantize.PreferenceDomainQuantizer

All Implemented Interfaces:

java.io.Serializable, Quantizer

@Shareable
public class PreferenceDomainQuantizer
extends ValueArrayQuantizer

Quantizer that uses a range and precision to determine discrete values. Values are rounded to the closest discrete value.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PreferenceDomainQuantizer.AutoProvider

Field Summary

Fields inherited from class org.grouplens.lenskit.transform.quantize.ValueArrayQuantizer

values

Constructor Summary

Constructors

Constructor and Description
PreferenceDomainQuantizer(double min, double max, double prec) Create a new preference domain quantizer.
PreferenceDomainQuantizer(PreferenceDomain dom) Create a new quantizer from a discrete preference domain.

Method Summary

Methods

Modifier and Type	Method and Description
PreferenceDomain	getPreferenceDomain()

Methods inherited from class org.grouplens.lenskit.transform.quantize.ValueArrayQuantizer

getCount, getIndexValue, getValues, index, quantize

Methods inherited from class java.lang.Object

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

Constructor Detail

PreferenceDomainQuantizer

@Inject
public PreferenceDomainQuantizer(PreferenceDomain dom)

Create a new quantizer from a discrete preference domain.

Parameters:

dom - The preference domain.

Throws:

java.lang.IllegalArgumentException - if the domain is not discrete.

PreferenceDomainQuantizer

public PreferenceDomainQuantizer(double min,
                         double max,
                         double prec)

Create a new preference domain quantizer.

See Also:

PreferenceDomain.PreferenceDomain(double, double, double)

Method Detail

getPreferenceDomain

public PreferenceDomain getPreferenceDomain()