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Bibliographic Details
Main Authors: Pasti, Clemente, Karagöz, Talu, Svete, Anej, Nowak, Franz, Boumasmoud, Reda, Cotterell, Ryan
Format: Preprint
Published: 2024
Subjects:
Online Access:https://arxiv.org/abs/2411.06228
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Table of Contents:
  • Extracting finite state automata (FSAs) from black-box models offers a powerful approach to gaining interpretable insights into complex model behaviors. To support this pursuit, we present a weighted variant of Angluin's (1987) $\mathbf{L^*}$ algorithm for learning FSAs. We stay faithful to the original algorithm, devising a way to exactly learn deterministic weighted FSAs whose weights support division. Furthermore, we formulate the learning process in a manner that highlights the connection with FSA minimization, showing how $\mathbf{L^*}$ directly learns a minimal automaton for the target language.