<tt>cp_als</tt> is to make a call to <tt>fixsigns</tt> to fix the sign ambiguity of the factor matrices. You can turn off this behavior by passing the <tt>'fixsigns'</tt> parameter value of <tt>false</tt> when calling <tt>cp_als</tt>.</p><pre class="codeinput">X = ktensor([1;1], {[1, 1; 1, -10],[1, 1; 1, -10]});
M = cp_als(X, 2, <span class="string">'printitn'</span>, 0, <span class="string">'init'</span>, X.U) <span class="comment">% &lt;-default behavior, fixsigns called</span>
M = cp_als(X, 2, <span clas