public void Mult(double b)
{
var res = new NNArray(this.Length);
for (int i = 0; i < this.Length; i++)
{
this.Values[i] *= b;
}
}
public static NNArray operator *(NNArray a, double b)
{
var res = new NNArray(a.Length);
for (int i = 0; i < a.Length; i++)
{
res[i] = a[i] * b;
}
return(res);
}
/// <summary>
///
/// </summary>
/// <param name="b"></param>
/// <param name="res"> an array to store the result</param>
public void Add(NNArray b, NNArray res)
{
if (this.Length != b.Length || this.Length != res.Length)
{
throw new ArgumentException("NNArrays do not have same length");
}
for (int i = 0; i < this.Length; i++)
{
this.Values[i] += b[i];
}
}
public void Subst(NNArray b)
{
if (this.Length != b.Length)
{
throw new ArgumentException("NNArrays do not have same length");
}
var res = new NNArray(this.Length);
for (int i = 0; i < this.Length; i++)
{
this.Values[i] -= b[i];
}
}
public static NNArray operator +(NNArray a, NNArray b)
{
if (a.Length != b.Length)
{
throw new ArgumentException("NNArrays do not have same length");
}
var res = new NNArray(a.Length);
for (int i = 0; i < a.Length; i++)
{
res[i] = a[i] + b[i];
}
return(res);
}
/// <summary>Linear algebraic matrix multiplication, A * B</summary>
/// <param name="B"> an array</param>
/// <param name="X"> an array to store the result</param>
/// <returns> Matrix product, A * B
/// </returns>
/// <exception cref="System.ArgumentException"> Matrix inner dimensions must agree.
/// </exception>
public virtual void Multiply(NNArray B, NNArray X)
{
if (B.Length != n || X.Length != m)
{
throw new System.ArgumentException("GeneralMatrix inner dimensions must agree.");
}
for (int j = 0; j < m; j++)
{
double val = 0;
for (int i = 0; i < n; i++)
{
val += this[i, j] * B[i];
}
X.Values[j] = val;
}
}
/// <summary>Linear algebraic matrix multiplication, A * B</summary>
/// <param name="B"> an array
/// </param>
/// <returns> Matrix product, A * B
/// </returns>
/// <exception cref="System.ArgumentException"> Matrix inner dimensions must agree.
/// </exception>
public virtual NNArray Multiply(NNArray B)
{
if (B.Length != n)
{
throw new System.ArgumentException("GeneralMatrix inner dimensions must agree.");
}
NNArray X = new NNArray(this.NbCols);
for (int j = 0; j < m; j++)
{
double val = 0;
for (int i = 0; i < n; i++)
{
val += this[i, j] * B[i];
}
X.Values[j] = val;
}
return(X);
}
