摘要:This collection comprises the fully refereed and expanded versions of selected papers presented at the 16th International Workshop on Approximation Algorithms for Combinatorial Optimization Problems (APPROX 2013) and the 17th International Workshop on Randomization and Computation (RANDOM 2013) held at UC Berkeley, CA, USA, August 21 -- August 23, 2013. The selection was made by the program committees of the respective meetings (listed below). Preliminary versions of the papers were presented at the workshops and the extended abstracts appeared in the proceedings of the meetings published by Springer.