public XGBooster()
{
IntPtr tempPtr;
var output = XGBoostNative.XGBoosterCreate(null, 0, out tempPtr);
if (output == -1)
{
throw new DllFailException(XGBoostNative.XGBGetLastError());
}
handle = tempPtr;
}
public XGBooster(DMatrix train)
{
var dmats = new[] { train.Handle };
var len = unchecked ((ulong)dmats.Length);
var output = XGBoostNative.XGBoosterCreate(dmats, len, out handle);
if (output == -1)
{
throw new DllFailException(XGBoostNative.XGBGetLastError());
}
}
public XGBooster(string fileName, int silent = 1)
{
IntPtr tempPtr;
var newBooster = XGBoostNative.XGBoosterCreate(null, 0, out tempPtr);
var output = XGBoostNative.XGBoosterLoadModel(tempPtr, fileName);
if (output == -1)
{
throw new DllFailException(XGBoostNative.XGBGetLastError());
}
handle = tempPtr;
}
public XGBooster(IDictionary <string, object> parameters, DMatrix train)
{
var dmats = new[] { train.Handle };
var len = unchecked ((ulong)dmats.Length);
var output = XGBoostNative.XGBoosterCreate(dmats, len, out handle);
if (output == -1)
{
throw new DllFailException(XGBoostNative.XGBGetLastError());
}
SetParameters(parameters);
}