Fig. 6From: PP-DDP: a privacy-preserving outsourcing framework for solving the double digest problemComparison of the average running time of PP-DDP and the other four algorithms for instances in [6, 8]. DDmap is the best performance operator in [8], SK05 is the genetic operator in [6] and GM12 is the genetic operator in [7], QIGA is the operator in [9]Back to article page