public CompiledHierarchicalNGram(HierarchicalNGram hierarchicalGram)
{
weightMultiplier = hierarchicalGram.CompiledMemoryUpdate;
CompiledGrammars = new ICompiledGram[hierarchicalGram.N];
Weights = new float[hierarchicalGram.N];
n = hierarchicalGram.N;
float weightSum = 0f;
float currentWeight = 1f;
for (int grammarSize = hierarchicalGram.N - 1; grammarSize >= 0; --grammarSize)
{
CompiledGrammars[grammarSize] = hierarchicalGram.Grammars[grammarSize].Compile();
currentWeight *= weightMultiplier;
weightSum += currentWeight;
Weights[grammarSize] = currentWeight;
}
for (int i = 0; i < Weights.Length; ++i)
{
Weights[i] /= weightSum;
}
}
public static IGram InitHierarchicalNGram(int n, float weightMultiplier)
{
Assert.IsTrue(n >= 1);
IGram gram;
if (n == 1)
{
gram = new UniGram();
}
else
{
gram = new HierarchicalNGram(n, weightMultiplier);
}
return(gram);
}
public void AddGrammar(IGram gram)
{
HierarchicalNGram grammar = gram as HierarchicalNGram;
if (grammar != null)
{
Assert.AreEqual(N, grammar.N);
for (int grammarSize = 0; grammarSize < N; ++grammarSize)
{
Grammars[grammarSize].AddGrammar(grammar.Grammars[grammarSize]);
}
}
else
{
int n = gram.GetN();
Assert.IsTrue(n <= N);
Grammars[n - 1].AddGrammar(gram);
}
}
