Fast-and-frugal trees (FFTs)
Machine Learning; Human-centered AI
noun phrase
Definition: A class of simple, noncompensatory decision trees designed for fast, resource-efficient classification or choice, in which each cue can lead directly to an exit decision [Siebert et al. 2025].
Example in context: “Heuristic decision tools such as fast-and-frugal trees (FFTrees) have proven to be effective and suitable for identifying promising determinants in this context.” [Siebert et al. 2025]
Synonyms / variants: FFTs; FFTrees
Related terms: decision tree; lexicographic classifier; bounded-rationality model; heuristic decision tool