/// <summary>Implemented as
/// <code>state.getBoost()*lengthNorm(numTerms)</code>, where
/// <code>numTerms</code> is {@link FieldInvertState#GetLength()} if {@link
/// #setDiscountOverlaps} is false, else it's {@link
/// FieldInvertState#GetLength()} - {@link
/// FieldInvertState#GetNumOverlap()}.
///
/// <p/><b>WARNING</b>: This API is new and experimental, and may suddenly
/// change.<p/>
/// </summary>
public override float ComputeNorm(System.String field, FieldInvertState state)
{
int numTerms;
if (discountOverlaps)
numTerms = state.GetLength() - state.GetNumOverlap();
else
numTerms = state.GetLength();
return (float) (state.GetBoost() * LengthNorm(field, numTerms));
}
/// <summary>Implemented as
/// <code>state.getBoost()*lengthNorm(numTerms)</code>, where
/// <code>numTerms</code> is {@link FieldInvertState#GetLength()} if {@link
/// #setDiscountOverlaps} is false, else it's {@link
/// FieldInvertState#GetLength()} - {@link
/// FieldInvertState#GetNumOverlap()}.
///
/// <p/><b>WARNING</b>: This API is new and experimental, and may suddenly
/// change.<p/>
/// </summary>
public override float ComputeNorm(System.String field, FieldInvertState state)
{
int numTerms;
if (discountOverlaps)
{
numTerms = state.GetLength() - state.GetNumOverlap();
}
else
{
numTerms = state.GetLength();
}
return((float)(state.GetBoost() * LengthNorm(field, numTerms)));
}
/// <summary> Compute the normalization value for a field, given the accumulated
/// state of term processing for this field (see {@link FieldInvertState}).
///
/// <p/>Implementations should calculate a float value based on the field
/// state and then return that value.
///
/// <p/>For backward compatibility this method by default calls
/// {@link #LengthNorm(String, int)} passing
/// {@link FieldInvertState#GetLength()} as the second argument, and
/// then multiplies this value by {@link FieldInvertState#GetBoost()}.<p/>
///
/// <p/><b>WARNING</b>: This API is new and experimental and may
/// suddenly change.<p/>
///
/// </summary>
/// <param name="field">field name
/// </param>
/// <param name="state">current processing state for this field
/// </param>
/// <returns> the calculated float norm
/// </returns>
public virtual float ComputeNorm(System.String field, FieldInvertState state)
{
return((float)(state.GetBoost() * LengthNorm(field, state.GetLength())));
}
/// <summary> Compute the normalization value for a field, given the accumulated
/// state of term processing for this field (see {@link FieldInvertState}).
///
/// <p/>Implementations should calculate a float value based on the field
/// state and then return that value.
///
/// <p/>For backward compatibility this method by default calls
/// {@link #LengthNorm(String, int)} passing
/// {@link FieldInvertState#GetLength()} as the second argument, and
/// then multiplies this value by {@link FieldInvertState#GetBoost()}.<p/>
///
/// <p/><b>WARNING</b>: This API is new and experimental and may
/// suddenly change.<p/>
///
/// </summary>
/// <param name="field">field name
/// </param>
/// <param name="state">current processing state for this field
/// </param>
/// <returns> the calculated float norm
/// </returns>
public virtual float ComputeNorm(System.String field, FieldInvertState state)
{
return (float) (state.GetBoost() * LengthNorm(field, state.GetLength()));
}