E. Korutcheva et al., STATISTICAL-MECHANICS OF THE KNAPSACK-PROBLEM, Journal of physics. A, mathematical and general, 27(18), 1994, pp. 120000645-120000650
The knapsack problem is an NP-complete combinatorial optimization prob
lem with inequality constraints. Using the replica method of statistic
al physics, we study the space of its solutions for a large problem si
ze. It turns out that this problem is closely related to the theory of
the binary perceptron.