%% Your job is to implement the RICA cost and gradient
function [cost,grad] = softICACost(theta, x, params)

% unpack weight matrix
W = reshape(theta, params.numFeatures, params.n);

% project weights to norm ball (prevents degenerate bases)
Wold = W;
W = l2rowscaled(W, 1);

%%% YOUR CODE HERE %%%

% unproject gradient for minFunc
grad = l2rowscaledg(Wold, W, Wgrad, 1);
grad = grad(:);