T REQUIRED   Output filename
  --quantize UINT             Quantizes the scores using this many bits
  --compress Needs: --quantize
                              Compress additional data
  -s,--scorer TEXT REQUIRED   Scorer function
  --bm25-k1 FLOAT Needs: --scorer
                              BM25 k1 parameter.
  --bm25-b FLOAT Needs: --scorer
                              BM25 b parameter.
  --pl2-c FLOAT Needs: --scorer
                              PL2 c parameter.
  --qld-mu FLOAT Needs: --scorer
   