On-demand food delivery(OFD)is gaining more and more popularity in modern society.As a kernel order assignment manner in OFD scenario,order recommendation directly influences the delivery efficiency of the platform an...On-demand food delivery(OFD)is gaining more and more popularity in modern society.As a kernel order assignment manner in OFD scenario,order recommendation directly influences the delivery efficiency of the platform and the delivery experience of riders.This paper addresses the dynamism of the order recommendation problem and proposes a reinforcement learning solution method.An actor-critic network based on long short term memory(LSTM)unit is designed to deal with the order-grabbing conflict between different riders.Besides,three rider sequencing rules are accordingly proposed to match different time steps of the LSTM unit with different riders.To test the performance of the proposed method,extensive experiments are conducted based on real data from Meituan delivery platform.The results demonstrate that the proposed reinforcement learning based order recommendation method can significantly increase the number of grabbed orders and reduce the number of order-grabbing conflicts,resulting in better delivery efficiency and experience for the platform and riders.展开更多
The construction of shiology system is the premise for comprehensively solving the issues of human shiance.The core of the construction of the shiology system is to reveal the inclusion and juxtaposition of relationsh...The construction of shiology system is the premise for comprehensively solving the issues of human shiance.The core of the construction of the shiology system is to reveal the inclusion and juxtaposition of relationships within shiance based on a comprehensive understanding of human shiance issues.The shiology system discussed in this paper is a four-level discipline system with the basic structure of shiology triangle composed of eaters'demands,food acquisition and shiance order,and it is currently in the form of"1-3-13-36".From a longitudinal point of view,53 inclusion relationships are established among disciplines at all levels.Horizontally,53 juxtapositions are established between disciplines at the same level.The shiology system is bounded by human shiance issues,not involving non-shiance issues areas.Human cognition of shiance and shiance issues must go through three historical stages as fragmented cognition,block-based cognition and holistic cognition.The construction of the shiology system marks that humans have entered the stage of"holistic cognition"of shiance.As the Chinese proverb goes,"food is the paramount necessity of the people".Shiology system interprets its connotation and extension.To solve shiance issues holistically,it need to ensure food security,enable people to eat healthy,and foster an enduring and stable society.And shiology system is a global public product which comprehensively solves shiance issues.展开更多
基金supported in part by the National Natural Science Foundation of China(No.62273193)Tsinghua University-Meituan Joint Institute for Digital Life,and the Research and Development Project of CRSC Research&Design Institute Group Co.,Ltd.
文摘On-demand food delivery(OFD)is gaining more and more popularity in modern society.As a kernel order assignment manner in OFD scenario,order recommendation directly influences the delivery efficiency of the platform and the delivery experience of riders.This paper addresses the dynamism of the order recommendation problem and proposes a reinforcement learning solution method.An actor-critic network based on long short term memory(LSTM)unit is designed to deal with the order-grabbing conflict between different riders.Besides,three rider sequencing rules are accordingly proposed to match different time steps of the LSTM unit with different riders.To test the performance of the proposed method,extensive experiments are conducted based on real data from Meituan delivery platform.The results demonstrate that the proposed reinforcement learning based order recommendation method can significantly increase the number of grabbed orders and reduce the number of order-grabbing conflicts,resulting in better delivery efficiency and experience for the platform and riders.
文摘The construction of shiology system is the premise for comprehensively solving the issues of human shiance.The core of the construction of the shiology system is to reveal the inclusion and juxtaposition of relationships within shiance based on a comprehensive understanding of human shiance issues.The shiology system discussed in this paper is a four-level discipline system with the basic structure of shiology triangle composed of eaters'demands,food acquisition and shiance order,and it is currently in the form of"1-3-13-36".From a longitudinal point of view,53 inclusion relationships are established among disciplines at all levels.Horizontally,53 juxtapositions are established between disciplines at the same level.The shiology system is bounded by human shiance issues,not involving non-shiance issues areas.Human cognition of shiance and shiance issues must go through three historical stages as fragmented cognition,block-based cognition and holistic cognition.The construction of the shiology system marks that humans have entered the stage of"holistic cognition"of shiance.As the Chinese proverb goes,"food is the paramount necessity of the people".Shiology system interprets its connotation and extension.To solve shiance issues holistically,it need to ensure food security,enable people to eat healthy,and foster an enduring and stable society.And shiology system is a global public product which comprehensively solves shiance issues.
