A FPTAS for a class of linear multiplicative problems
Computational Optimization and Applications
Approximation algorithm for a class of global optimization problems
Journal of Global Optimization
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We present a fully polynomial time approximation scheme (FPTAS) for minimizing an objective (a T x + γ)(b T x + δ) under linear constraints A x ≤ d. Examples of such problems are combinatorial minimum weight product problems such as the following: given a graph G = (V,E) and two edge weights $${a},{b}: E \rightarrow \mathbb{R}_+$$ find an s − t path P that minimizes a(P)b(P), the product of its edge weights relative to a and b.