com.cloudera.oryx.app.als

Class MultiRescorerProvider

java.lang.Object

com.cloudera.oryx.app.als.AbstractRescorerProvider

com.cloudera.oryx.app.als.MultiRescorerProvider

All Implemented Interfaces:

RescorerProvider

public final class MultiRescorerProvider
extends AbstractRescorerProvider

Convenience implementation that will aggregate the behavior of RescorerProviders. It will filter an item if any of the given instances filter it, and will rescore by applying the rescorings in the given order.

Since:

2.0.0

See Also:

MultiRescorer

Method Summary

Modifier and Type	Method and Description
Rescorer	getMostActiveUsersRescorer(List<String> args)
Rescorer	getMostPopularItemsRescorer(List<String> args)
Rescorer	getMostSimilarItemsRescorer(List<String> args)
Rescorer	getRecommendRescorer(List<String> userIDs, List<String> args)
Rescorer	getRecommendToAnonymousRescorer(List<String> itemIDs, List<String> args)
static RescorerProvider	of(RescorerProvider... providers)

Methods inherited from class java.lang.Object

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

Method Detail

of

public static RescorerProvider of(RescorerProvider... providers)

Parameters:

providers - RescorerProviders to aggregate

Returns:

a RescorerProvider which combines the rescoring of the given implementations

Throws:

IllegalArgumentException - if providers is empty or null

Since:

2.0.0

getRecommendRescorer

public Rescorer getRecommendRescorer(List<String> userIDs,
                                     List<String> args)

Specified by:

getRecommendRescorer in interface RescorerProvider

Overrides:

getRecommendRescorer in class AbstractRescorerProvider

Parameters:

userIDs - user(s) for which recommendations are being made, which may be needed in the rescoring logic.

args - arguments, if any, that should be used when making the Rescorer. This is additional information from the request that may be necessary to its logic, like current location. What it means is up to the implementation.

Returns:

null

getRecommendToAnonymousRescorer

public Rescorer getRecommendToAnonymousRescorer(List<String> itemIDs,
                                                List<String> args)

Specified by:

getRecommendToAnonymousRescorer in interface RescorerProvider

Overrides:

getRecommendToAnonymousRescorer in class AbstractRescorerProvider

Parameters:

itemIDs - items that the anonymous user is associated to

args - arguments, if any, that should be used when making the Rescorer. This is additional information from the request that may be necessary to its logic, like current location. What it means is up to the implementation.

Returns:

null

getMostPopularItemsRescorer

public Rescorer getMostPopularItemsRescorer(List<String> args)

Specified by:

getMostPopularItemsRescorer in interface RescorerProvider

Overrides:

getMostPopularItemsRescorer in class AbstractRescorerProvider

Parameters:

args - arguments, if any, that should be used when making the Rescorer. This is additional information from the request that may be necessary to its logic, like current location. What it means is up to the implementation.

Returns:

null

getMostActiveUsersRescorer

public Rescorer getMostActiveUsersRescorer(List<String> args)

Specified by:

getMostActiveUsersRescorer in interface RescorerProvider

Overrides:

getMostActiveUsersRescorer in class AbstractRescorerProvider

Parameters:

args - arguments, if any, that should be used when making the Rescorer. This is additional information from the request that may be necessary to its logic, like current location. What it means is up to the implementation.

Returns:

null

getMostSimilarItemsRescorer

public Rescorer getMostSimilarItemsRescorer(List<String> args)

Specified by:

getMostSimilarItemsRescorer in interface RescorerProvider

Overrides:

getMostSimilarItemsRescorer in class AbstractRescorerProvider

Parameters:

args - arguments, if any, that should be used when making the Rescorer. This is additional information from the request that may be necessary to its logic, like current location. What it means is up to the implementation.

Returns:

null