On May 3, 2005, at 5:57 PM, Robichaud, Jean-Philippe wrote:
Hi Everyone,
I've been searching the archive without success to answer this one: is it
possible to specify one similarity class per field, just like we can do with
an analyzer ? I know I can change the similarity of the searcher, but that
restrict me to break some complex queries into different chunk and sum the
score "by hand" rather than having the fast internal implementation do the
job. What I would really like is to have something like
PerFieldAnalyzerWrapper but for similarity... Is this possible ?
I'm interested in what your use case is in desiring this. What factors would you vary per field? The only factor that seems to make sense is lengthNorm which is computed at indexing time and does allow per-field tweaking. A custom Similarity subclass could be used to affect the lengthNorm based on the field name parameter.
Erik
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