public DMatrix vectorNorm() {
DMatrix m = DMath.createMatrix(this.rows(), this.columns(), this.toArray());
DMatrix Denom = this.mul(this).sumColumns();
Denom.sqrti();
return m.divRows(Denom);
}
public DMatrix sumColumns() {
DMatrix sum = DMath.createMatrix(this.rows, 1);
DMatrix multiplier = DMath.createOnesMatrix(this.columns, 1);
SimpleCuBlas.gemm(false, false, this, multiplier, sum, 1.0, 0.0);
return sum;
}
public DMatrix sub(double v) {
DMatrix m = DMath.createMatrix(this.rows(), this.columns(), this.toArray());
for (int i = 0; i < this.length(); i++) m.put(i, m.get(i) - v);
return m;
}
public DMatrix sumRows(int startRow, int howMany) {
DMatrix sum = DMath.createMatrix(1, this.columns());
DMatrix multiplier = DMath.createOnesMatrix(1, howMany);
SimpleCuBlas.cust_gemv(false, this, multiplier, sum, 1.0, 0.0, startRow, howMany);
return sum;
}
public DMatrix inv() {
DMatrix m = DMath.createMatrix(this.rows(), this.columns(), this.toArray());
SimpleCuBlas.inverseElements(m);
return m;
}
