Package eu.h2020.helios_social.modules.socialgraphmining.heuristics

Class DifferenceMiner

java.lang.Object

eu.h2020.helios_social.modules.socialgraphmining.SocialGraphMiner

eu.h2020.helios_social.modules.socialgraphmining.heuristics.DifferenceMiner

public class DifferenceMiner
extends SocialGraphMiner

This class provides a SocialGraphMiner that wraps a miner predictions so as not to predict the top of a base miner's predictions (e.g. DHR@k,withhold of a miner is obtained if HitRate@k is calculated over the outcome of new AdditionalDiscoveryMiner(miner, new RepeatAndReplyMiner(cen), withhold).

Author:

Emmanouil Krasanakis

Nested Class Summary

Nested classes/interfaces inherited from class eu.h2020.helios_social.modules.socialgraphmining.SocialGraphMiner

SocialGraphMiner.InteractionType, SocialGraphMiner.SocialGraphMinerParameters

Constructor Summary

Constructors

Constructor	Description
DifferenceMiner(SocialGraphMiner discoveryMiner, SocialGraphMiner baseMiner, int withholdTopOfBaseMiner)

Method Summary

Modifier and Type	Method	Description
SocialGraphMiner.SocialGraphMinerParameters	constructModelParameterObject(eu.h2020.helios_social.core.contextualegonetwork.Interaction interaction)
void	newInteractionParameters(eu.h2020.helios_social.core.contextualegonetwork.Interaction interaction, SocialGraphMiner.SocialGraphMinerParameters neighborModelParameters, SocialGraphMiner.InteractionType interactionType)
double	predictNewInteraction(eu.h2020.helios_social.core.contextualegonetwork.Context context, eu.h2020.helios_social.core.contextualegonetwork.Node destinationNode)	Predicts the weight of performing a SEND interaction between the given context's ego and a destination node within a given context.
java.util.HashMap<eu.h2020.helios_social.core.contextualegonetwork.Node,java.lang.Double>	recommendInteractions(eu.h2020.helios_social.core.contextualegonetwork.Context context)	Calls SocialGraphMiner.predictNewInteraction(Context, Node) to score the likelihood of interacting with all nodes of the given context.

Methods inherited from class java.lang.Object

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

Methods inherited from class eu.h2020.helios_social.modules.socialgraphmining.SocialGraphMiner

getContextualEgoNetwork, getModelParameterObject, getModelParameters, newInteraction, setSendPermision

Constructor Detail

DifferenceMiner

public DifferenceMiner(SocialGraphMiner discoveryMiner,
                       SocialGraphMiner baseMiner,
                       int withholdTopOfBaseMiner)

Method Detail

predictNewInteraction

public double predictNewInteraction(eu.h2020.helios_social.core.contextualegonetwork.Context context,
                                    eu.h2020.helios_social.core.contextualegonetwork.Node destinationNode)

Description copied from class: SocialGraphMiner

Predicts the weight of performing a SEND interaction between the given context's ego and a destination node within a given context. This method should typically return values in the [0,1] range, where higher values correspond to more likely interactions.

Specified by:

predictNewInteraction in class SocialGraphMiner

Parameters:

context - The context in which to perform the prediction.

destinationNode - The destination node of the interaction.

Returns:

The weight of performing the interaction (higher values are more likely).

recommendInteractions

public java.util.HashMap<eu.h2020.helios_social.core.contextualegonetwork.Node,java.lang.Double> recommendInteractions(eu.h2020.helios_social.core.contextualegonetwork.Context context)

Description copied from class: SocialGraphMiner

Calls SocialGraphMiner.predictNewInteraction(Context, Node) to score the likelihood of interacting with all nodes of the given context.

Overrides:

recommendInteractions in class SocialGraphMiner

Parameters:

context - The context for which to recommend interactions.

Returns:

A hash map of node scores (larger is more likely to occur.

newInteractionParameters

public void newInteractionParameters(eu.h2020.helios_social.core.contextualegonetwork.Interaction interaction,
                                     SocialGraphMiner.SocialGraphMinerParameters neighborModelParameters,
                                     SocialGraphMiner.InteractionType interactionType)

Specified by:

newInteractionParameters in class SocialGraphMiner

constructModelParameterObject

public SocialGraphMiner.SocialGraphMinerParameters constructModelParameterObject(eu.h2020.helios_social.core.contextualegonetwork.Interaction interaction)