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burca.py: add exact-match coincidence to string coinc func

Soichiro Kuwahara requested to merge soichiro.kuwahara/lalsuite:string_exact_match into master

Description

modifies burst coincidence code's definition of coincidence to require template exact match, mimicking the behaviour of the gstlal inspiral pipeline

API Changes and Justification

Backwards Compatible Changes

  • This change introduces no API changes
  • This change adds new API calls

Backwards Incompatible Changes

  • This change modifies an existing API
  • This change removes an existing API

the associated string search code in the gstlal-burst package has already been modified to provide a null "template_id" so that all templates match all other templates. this will cause the current behaviour to be preserved although the interface between lalsuite and gstlal will change.

this change is required to support the new cherenkov burst search, which, for some reason, is far more prone to geometric explosions of coincidences when glitches occur.

Review Status

not reviewed, but heavily tested in cherenkov burst pipeline testing

Edited by Kipp Cannon

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