Data Information in Online Environments

This book constitutes the refereed proceedings of the 4th EAI International Conference on Data Information in Online Environments, DIONE 2023, held in Nanchang, China, during November 25-27, 2023.The 21 full papers  were carefully reviewed and selected from 81 submissions.The papers are grouped in thematic sessions as follows: the application of artificial intelligence: the new era of computer network by using machine learning, a caching strategy using deep q-learning for multi-access edge computing users, a deep reinforcement learning-based content updating algorithm for high definition map edge caching, advanced technology in computing, emerging technologies and applications in networks and management.