User experience evaluation method and system in unconscious and free state

The invention provides a user experience evaluation method and system in an unconscious and free state, and the method comprises the steps: developing a mobile phone App, obtaining a process video ofa user using a newly developed APP, and transmitting the process video to a cloud end (the video file can be shot or read on site through the mobile phone App); Decomposing the video into a series ofcontinuous photos at a cloud end; A face recognition technology is applied to recognize the face expression types corresponding to the series of photos, code vectors with expressions changing along with time are obtained, and a complex nonlinear relation model of user experience data and corresponding user experience process scores is established on a cloud platform through a GRNN neural network;A user experience evaluation result of the user experience process can be automatically obtained by inputting a video to serve as a basis for upgrading and optimizing an APP product by an enterprise. 本发明提供了一种处于无意识、自由状态下的的用户体验评价