Effective hand strength algorithm

Effective Hand Strength (EHS) is a poker algorithm conceived by computer scientists Darse Billings, Denis Papp, Jonathan Schaeffer and Duane Szafron that was published for the first time in the "Opponent Modeling in Poker" (PDF). AAAI-98 Proceedings.

Source: Wikipedia — Effective hand strength algorithm (CC BY-SA 4.0)