Pp. Khargonekar et A. Tikku, Probabilistic search algorithms for robust stability analysis and their complexity properties, LECT N CONT, 241, 1999, pp. 25-45
In this paper, we consider several robust control analysis and design probl
ems. As has become well known over the last few years, most of these proble
ms are NP hard. We show that if instead of worst-case guaranteed conclusion
s, one is willing to draw conclusions with a high degree of confidence, the
n the computational complexity decreases dramatically.