Exemplo n.º 1
0
 // return the matrix-vector product b = Ax
 public SparseVector times(SparseVector x) {
   SparseRowMatrix A = this;
   if (N != x.size()) throw new RuntimeException("Dimensions disagree");
   SparseVector b = new SparseVector(N);
   for (int i = 0; i < N; i++) b.put(i, A.rows[i].dot(x));
   return b;
 }
 /** Sets the given row equal the passed vector */
 public void setRow(int i, SparseVector x) {
   if (x.size() != numColumns)
     throw new IllegalArgumentException("New row must be of the same size as existing row");
   rowD[i] = x;
 }