Implement dynamic blending#238
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…ize function to determine
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The task encoder can now define a
blend_sample_sizefunction to determine the amount each sample contributes.Balancing is deficit-based on historic distribution. We do not look-ahead for now, also we do not keep running averages of sizes (to simulate look-ahead).
There are two configs for this:
blend_sample_size_alpha: this is the coefficient (i.e. strength of deficit). For =0, it would fall back to ignoring the size. For <1, softer correction, >1: more aggressive correction.blend_sample_size_epsilon: This is added to all deficits (so it depends on the unit/size ofblend_sample_size). I.e. if 0, only consider undersampled sources in sampling. If >0, consider oversampled sources as well. Higher epsilon will down-weight deficits.