IUserSimilarity.UserSimilarity Method

IUserSimilarity UserSimilarity Method

NReco.Recommender Class Library

Returns the degree of similarity, of two users, based on the their preferences.

Namespace: NReco.CF.Taste.Similarity
Assembly: NReco.Recommender (in NReco.Recommender.dll) Version: 1.0.0.0 (1.0.0.0)

Syntax

C++

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double UserSimilarity(
	long userID1,
	long userID2
)

double UserSimilarity(
	long userID1,
	long userID2
)

Function UserSimilarity ( 
	userID1 As Long,
	userID2 As Long
) As Double

Function UserSimilarity ( 
	userID1 As Long,
	userID2 As Long
) As Double

double UserSimilarity(
	long long userID1, 
	long long userID2
)

double UserSimilarity(
	long long userID1, 
	long long userID2
)

abstract UserSimilarity : 
        userID1 : int64 * 
        userID2 : int64 -> float

abstract UserSimilarity : 
        userID1 : int64 * 
        userID2 : int64 -> float

Parameters

userID1: Type: System Int64
first user ID

userID2: Type: System Int64
second user ID

Return Value

Type: Double
similarity between the users, in [-1,1] or Double.NaN if similarity is unknown

Remarks

Throws NReco.CF.Taste.Common.NoSuchUserException if either user is known to be non-existent in the data. Throws TasteException if an error occurs while accessing the data.