v0.4.1

What's New

• Add prob_not() for probabilistic negation (complement rule)
  • Computes P(NOT R) = 1 - P(R) with epsilon clamping for numerical stability
  • In log-odds space, NOT corresponds to simple negation: logit(1 - p) = -logit(p)
  • Composes naturally with prob_and(), prob_or(), and log_odds_conjunction() for exclusion queries (e.g., "python AND NOT java")
  • Satisfies De Morgan's laws: NOT(A AND B) = OR(NOT A, NOT B) and NOT(A OR B) = AND(NOT A, NOT B)
• Add Boolean NOT example (examples/boolean_not.py)
• Add __version__ via importlib.metadata (reads from installed package metadata)
• Add automated CITATION.cff sync validation in CI
• Fix CITATION.cff version drift

Install

pip install bayesian-bm25==0.4.1