A Review of Information Representation of User's Micro-Expressions

[Purpose/Significance] To analyze the current status and trends of research in the field of micro-expression recognition at home and abroad, and to provide a reference for the research on micro-expression information representation of users in the field of library and intelligence. [Method/Process] The bibliometric-based research method revealed the research dynamics in the field of micro-expression recognition in the last decade, and analyzed the convergence trends, technical basis and difficult challenges of micro-expression recognition and information representation. [Result/Conclusion] Micro-expression datasets and micro-expression recognition technologies are current research hotspots; technical approaches, security ethics and database volume are major challenges for today's development; information transmission and information feedback are emerging research areas that can be developed in libraries and intelligence in the future, and areas such as meta-universe, privacy issues and technology-driven are future trends in the application of micro-expression recognition technologies.Keywords: micro-expression recognition; information representation; information transmission; information feedback; bibliometrics