Perception Contracts for Safety of ML-Enabled Systems

Author:

Astorga Angello1ORCID,Hsieh Chiao1ORCID,Madhusudan P.1ORCID,Mitra Sayan1ORCID

Affiliation:

1. University of Illinois at Urbana-Champaign, Urbana, USA

Abstract

We introduce a novel notion of perception contracts to reason about the safety of controllers that interact with an environment using neural perception. Perception contracts capture errors in ground-truth estimations that preserve invariants when systems act upon them. We develop a theory of perception contracts and design symbolic learning algorithms for synthesizing them from a finite set of images. We implement our algorithms and evaluate synthesized perception contracts for two realistic vision-based control systems, a lane tracking system for an electric vehicle and an agricultural robot that follows crop rows. Our evaluation shows that our approach is effective in synthesizing perception contracts and generalizes well when evaluated over test images obtained during runtime monitoring of the systems.

Publisher

Association for Computing Machinery (ACM)

Subject

Safety, Risk, Reliability and Quality,Software

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