build/modelscript.umd.js
function(U) {
            	var k = this.cols();
            	var Ureduce = U.slice(1, U.rows(), 1, k);
            	return this.x(Ureduce.transpose());
                }
function(U) {
            	var k = this.cols();
            	var Ureduce = U.slice(1, U.rows(), 1, k);
            	return this.x(Ureduce.transpose());
                }
function ( U ) { var k = this . cols ( ) ; var Ureduce = U . slice ( 1 , U . rows ( ) , 1 , k ) ; return this . x ( Ureduce . transpose ( ) ) ; }
recover a matrix to a higher dimension
recover a matrix to a higher dimension