public static Problem LoadSVMFile(string filename, Parameter param)
{
System.IO.StreamReader fp = new System.IO.StreamReader(filename);
List <double> vy = new List <double>();
List <Node[]> vx = new List <Node[]>();
int max_index = 0;
while (true)
{
string line = fp.ReadLine();
if (line == null)
{
break;
}
var st = line.Split(new[] { ' ', '\t', '\n', '\r', '\f', ':' });
int counter = 0;
vy.Add(TextFactory.ParseDouble(st[counter++]));
int m = (st.Length - 1) / 2;
Node[] x = new Node[m];
for (int j = 0; j < m; j++)
{
x[j] = new Node();
x[j].index = TextFactory.ParseInt(st[counter++]);
x[j].value = TextFactory.ParseDouble(st[counter++]);
}
if (m > 0)
{
max_index = System.Math.Max(max_index, x[m - 1].index);
}
vx.Add(x);
}
Problem prob = new Problem();
prob.l = vy.Size();
prob.x = new Node[prob.l][];
for (int i = 0; i < prob.l; i++)
{
prob.x[i] = vx.Get(i);
}
prob.y = new double[prob.l];
for (int i = 0; i < prob.l; i++)
{
prob.y[i] = vy.Get(i);
}
if (param.gamma == 0 && max_index > 0)
{
param.gamma = 1.0 / max_index;
}
if (param.kernel_type == Parameter.PRECOMPUTED)
{
for (int i = 0; i < prob.l; i++)
{
if (prob.x[i][0].index != 0)
{
throw new Exception("Wrong kernel matrix: first column must be 0:sample_serial_number\n");
}
if ((int)prob.x[i][0].value <= 0 || (int)prob.x[i][0].value > max_index)
{
throw new Exception("Wrong input format: sample_serial_number out of range\n");
}
}
}
fp.Close();
return(prob);
}
public int getInt(string name)
{
return(hash.ContainsKey(name) ? TextFactory.ParseInt(hash.Get(name)) : 0);
}
