/// <summary>
/// Return a batch of items.
/// </summary>
/// <param name="random">Specifies the random number generator.</param>
/// <param name="nCount">Specifies the number of items to sample.</param>
/// <param name="dfBeta">Not used.</param>
/// <returns>The array of items is returned.</returns>
public MemoryCollection GetSamples(CryptoRandom random, int nCount, double dfBeta)
{
if (m_rgWts == null || m_rgWts.Length != nCount)
{
m_rgWts = new double[nCount];
for (int i = 0; i < m_rgWts.Length; i++)
{
m_rgWts[i] = 1.0;
}
}
if (m_rgIdx == null || m_rgIdx.Length != nCount)
{
m_rgIdx = new int[nCount];
}
MemoryCollection mem = new MemoryCollection(nCount);
if (m_bPreLoaded)
{
for (int i = 0; i < nCount; i++)
{
mem.Add(m_mem[m_nSampleIdx]);
m_nSampleIdx++;
if (m_nSampleIdx == m_mem.Count)
{
m_nSampleIdx = 0;
}
}
}
else
{
mem = m_mem.GetRandomSamples(random, nCount);
}
mem.Indexes = m_rgIdx;
mem.Priorities = m_rgWts;
return(mem);
}
/// <summary>
/// Return a batch of items.
/// </summary>
/// <param name="random">Specifies the random number generator.</param>
/// <param name="nCount">Specifies the number of items to sample.</param>
/// <param name="dfBeta">Not used.</param>
/// <returns>The random array of items is returned.</returns>
public MemoryCollection GetSamples(CryptoRandom random, int nCount, double dfBeta)
{
if (m_rgWts == null || m_rgWts.Length != nCount)
{
m_rgWts = new double[nCount];
for (int i = 0; i < m_rgWts.Length; i++)
{
m_rgWts[i] = 1.0;
}
}
if (m_rgIdx == null || m_rgIdx.Length != nCount)
{
m_rgIdx = new int[nCount];
}
MemoryCollection mem = m_mem.GetRandomSamples(random, nCount);
mem.Indexes = m_rgIdx;
mem.Priorities = m_rgWts;
return(mem);
}