The embodiment of the invention provides a task scheduling method and device for
itinerary planning, a storage medium and a program product. In the scheme, firstly, based on multi-
modal demand
semantics, a
system is enabled to adaptively identify an internal structure of a travel task, global complexity, real-time performance and a
privacy level are intelligently mapped to a subtask level, and a'global demand-subtask constraint-end-edge-cloud node scheduling 'parameterized control link is formed; secondly, the
reinforcement learning optimizer can dynamically adjust the scheduling weight, and strategy self-
adaptive evolution is achieved. Furthermore, an execution-monitoring-feedback-rescheduling closed-loop
system can be constructed, intelligent degradation and context snapshot migration are triggered when the node state deviates, seamless connection and continuous execution of a task chain among cross-hierarchy heterogeneous nodes are ensured, and finally, quick response is realized on the premise of ensuring the accuracy of a recommendation result of the travel information, so that the recommendation efficiency of the travel information is improved. And the
system performance and the user experience can be balanced.