This study addresses the computational inefficiency of traditional evolutionary multitasking algorithms in solving many-task capacitated vehicle routing problems (CVRPs) by proposing a knowledge transfer optimization framework driven by dynamic similarity evaluation. Existing approaches predominantly rely on explicit knowledge transfer mechanisms based on transfer matrices, whose computational complexity escalates exponentially with increasing task quantities. To overcome this limitation, a three-phase optimization framework is developed: (1) Common features across multiple tasks are extracted through feature space mapping techniques, establishing a quantifiable similarity evaluation model; (2) An adaptive knowledge transfer feedback system is implemented, integrating a transfer-effect monitoring mechanism and dynamic weight adjustment strategy to ensure real-time optimization of knowledge source quality; (3) A hybrid crossover operation architecture is designed, combining elite solution transfer with local route optimization to reduce computational overhead. Comparative experiments conducted on a comprehensive simulation dataset (containing 99 many-task CVRP instances) and real-world logistics scenarios demonstrate the algorithm’s superior performance across multiple metrics.
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