Fix SPL zero support candidate, edit Dirichlet notebook

mggg / VoteKit

A Swiss Army Knife for computational social choice research

https://votekit.readthedocs.io/en/latest/

MIT License

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Closed cdonnay closed 4 months ago

cdonnay commented 4 months ago

Dirichlet parameter tutorial notebook now uses slate-PlackettLuce.
Fixed bug by which slate-PlackettLuce could not generate ballots when some candidate had 0 support. Added two tests to catch.