The threshold t=0.07 together with a discriminating filter of f =0.07 result in the best precision, and t=0.07 in the best F1 score.
we perform extrinsic evaluation in a VSD task on S-test with WaS-de (t=0.07) and on the combinations U-WaS-de (union with S-train) and B-WaS-de (backoff-variant).