Expert: Resets the normalization factor for the named field of the named document. The norm represents the product of the field's {@link Lucene.Net.Documents.Fieldable#SetBoost(float) boost} and its {@link Similarity#LengthNorm(String, int) length normalization}. Thus, to preserve the length normalization values when resetting this, one should base the new value upon the old. NOTE: If this field does not store norms, then this method call will silently do nothing.

Expert: Resets the normalization factor for the named field of the named document.