cost {M2SMJF}

Calculate the cost

Description

A function to calculate the cost of the objective function

Usage

cost(new_WL_list, init_list, lambda)

Arguments

new_WL_list

A list of matrices factorized from the similarity matrices list WL

init_list

A list containing the updated result in this iteration

lambda

A parameter to set the relative weight of the group sparsity constraints

Value

A number indicating the total cost of the objective function

Author(s)

Xiaoyao Yin

Examples

WL <- simu_data_gen()
WL[[1]] <- affinityMatrix(dist2eu(Standard_Normalization(WL[[1]]),Standard_Normalization(WL[[1]])))
WL[[2]] <- affinityMatrix(dist2eu(Standard_Normalization(WL[[2]]),Standard_Normalization(WL[[2]])))
new_WL_list <- initialize_WL(WL)
k <- 5
lambda <- 0.25
init_list <- initialization(new_WL_list,k)
update_L_list <- update_L(new_WL_list,init_list)
update_alpha_list <- update_alpha(new_WL_list,update_L_list,lambda)
init_list <- update_alpha_list
new_loss <- cost(new_WL_list,init_list,lambda)