C# Class MyMediaLite.Diversification.SequentialDiversification

Sequential diversification

Literature: Cai-Nicolas Ziegler, Sean McNee, Joseph A. Konstan, Georg Lausen: Improving Recommendation Lists Through Topic Diversification. WWW 2005

Private Properties

Property	Type	Description

Method	Description
DiversifySequential ( IList item_list, double diversification_parameter ) : IList	Diversify an item list
SequentialDiversification ( CorrelationMatrix item_correlation ) : System	Constructor
Similarity ( ICollection items, CorrelationMatrix item_correlation ) : double	Compute the intra-set similarity of an item collection
Similarity ( int item_id, ICollection items, CorrelationMatrix item_correlation ) : double	Compute similarity between one item and a collection of items

Diversify an item list

public DiversifySequential ( IList item_list, double diversification_parameter ) : IList
item_list	IList	a list of items
diversification_parameter	double	the diversification parameter (higher means more diverse)
return	IList

Constructor

public SequentialDiversification ( CorrelationMatrix item_correlation ) : System
item_correlation	CorrelationMatrix	the similarity measure to use for diversification
return	System

Compute the intra-set similarity of an item collection

public static Similarity ( ICollection items, CorrelationMatrix item_correlation ) : double
items	ICollection	a collection of items
item_correlation	CorrelationMatrix	the similarity measure to use
return	double

Compute similarity between one item and a collection of items

public static Similarity ( int item_id, ICollection items, CorrelationMatrix item_correlation ) : double
item_id	int	the item ID
items	ICollection	a collection of items
item_correlation	CorrelationMatrix	the similarity measure to use
return	double