Feature selection method and device for generating user portrait

• Main Author: CHEN BOLIANG
• Format: Patent
• Language: Chinese; English
• Published: 03.12.2021
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; HANDLING RECORD CARRIERS; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS

The invention discloses a feature selection method and device for generating a user portrait, and relates to the technical field of computers. A specific embodiment of the method comprises the steps of receiving to-be-processed feature data, and generating a candidate feature set; calculating an evaluation value of each feature in the candidate feature set based on a preset evaluation model, and recording the features of which the evaluation values are greater than a first threshold value into a first candidate feature set; calculating a correlation coefficient between every two features in the first candidate feature set based on a preset correlation coefficient model, and recording the features of which the correlation coefficients are greater than a second threshold value into a second candidate feature set; and substituting the first threshold value, the second threshold value, the first candidate feature set and the second candidate feature set into a pre-trained policy network to obtain a policy-screene