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Score normalizations

Tiago de Freitas Pereira requested to merge score-normalizations into dask-pipelines

This is a long MR with the following features:

  • Proper checkpointing of scores (BioAlgCheckpointWrapper). Still in pickle, though
  • Moved the score-writer outside of the VanillaBiometricsPipeline
  • Simplified the scoring by BioAlgorithm. Also made once SampleSet, dump one score.
  • Implemented a new pipeline that does Z, T and ZT score normalizations. Also created wrappers for Checkpointing and Dask this pipeline. Such pipeline has to wrap a VanillaBiometricsPipeline to work.
  • Adapted the CLI command, bob pipelines vanilla-biometrics to work with ZNorm. Now, if you want to ztnorm a pipeline, just do bob pipelines vanilla-biometrics --ztnorm

Don't know if someone is willing to review this one.

Edited by Tiago de Freitas Pereira

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