Module prob 

Numerically stable sigmoid / logit and probabilistic AND/OR/NOT in log space. The explicitly named confidence_scaled_log_odds_pool implements the robust n^alpha ranking heuristic; exact signed single-prior evidence fusion lives in uqa-fusion::BayesianEvidenceFusion.

Constants

PROB_EPSILON

Probability clamp epsilon (Eq. 40, Paper 3).

Functions

clamp_prob

confidence_scaled_log_odds_pool

Confidence-scaled log-odds ranking pool.

confidence_scaled_log_odds_pool_weighted

Weighted confidence-scaled log-odds ranking pool.

cosine_to_probability

Cosine similarity to probability: (1 + score) / 2 clamped to (epsilon, 1 - epsilon) (Definition 7.1.2, Paper 3).

logit

Inverse sigmoid: log(p / (1 - p)). Input is clamped to (epsilon, 1 - epsilon) first.

prob_and

Probabilistic AND in log space: exp(sum(ln p_i)).

prob_not

Probabilistic NOT: 1 - p.

prob_or

Probabilistic OR in log space: 1 - exp(sum(ln(1 - p_i))).

sigmoid

Numerically stable sigmoid: