[Xapian-devel] Backend for Lucene format indexes-How to get doclength

[Olly Betts]

On Mon, Aug 26, 2013 at 09:41:07AM +0800, jiangwen jiang wrote:
> > For now, using weighting schemes which don't use document length is
> > probably the simplest answer.
> 
> There's tf-idf weighting scheme on svn master, is it suitable for lucene
> backend?

Yes - TfIdfWeight doesn't ever use the document length (at least with
the normalisations currently implemented).

You could also use BM25 with parameter b=0.

Cheers,
    Olly