Add functionality for LabelScorers implemented in python #124
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…lattice from beam
larissakl
approved these changes
Jul 24, 2025
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Add a trampoline class
PythonLabelScorerand lots of pybindings that allow implementation of LabelScorers in python.librasrnow exposes an abstract base classLabelScorerwhich can be inherited in python. A subclass can then be registered in the RASR label scorer factory viaregister_label_scorer_typeand thus be instantiated by RASR for search.Since the constructor of a
LabelScoreris supposed to take a RASRCore::Configurationobject this PR adds a simple__getitem__function to the Configuration pybinds in order to allow python-implemented label scorers to make use of config parameters.For the future it would be good to extend/overhaul the
Configurationpybinds to improve how the config can be interacted with from python-side. But this is a separate future issue.Depends on #117.