Constraints

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Constraints for Generalized CP Decomposition.

AbstractConstraint

Abstract type for GCP constraints on the factor matrices U = (U[1],...,U[N]).

Concrete types ConcreteConstraint <: AbstractConstraint should implement:

satisfies(M::CPD, constraint::ConcreteConstraint) that checks if M satisfies the constraint
project!(M::CPD, constraint::ConcreteConstraint) that projects M onto the constraint set

satisfies(M::CPD, constraint::ConcreteConstraint)

Return whether M satisfies the constraint defined by constraint.

project!(M::CPD, constraint::ConcreteConstraint)

Project M in-place onto the constraint set defined by constraint.

LowerBound(value::Real)

Lower-bound constraint on the entries of the factor matrices U = (U[1],...,U[N]), i.e., U[i][j,k] >= value.