alpha: All possible attribute patterns In ACTCD: Asymptotic Classification Theory for Cognitive Diagnosis

Description

This function is used to generate all possible attribute patterns given the number of attributes.

Usage

 1 alpha(K) 

Arguments

 K The number of attributes.

Value

A 2^K \times K binary matrix is returned, 1 representing mastery of the attributes and 0 representing non-mastery of the attributes.

eta
 1 2 3 4 5 # Generate all possible attribute patterns given the number of attributes, K. K <- 3 A3 <- alpha(K) K <- 4 A4 <- alpha(K)