Abstract: A clock error prediction method includes: obtaining historical satellite clock error data of a preset time period which includes broadcast ephemeris clock error data and precise ephemeris clock error data; obtaining corrected precise ephemeris clock error data based on the broadcast ephemeris clock error data; obtaining a single-day clock speed of each satellite through fitting based on single-day clock error data in the corrected precise ephemeris clock error data of each satellite; obtaining a clock speed time sequence of each satellite based on the single-day clock speed of each satellite; obtaining a clock speed change rate of each satellite through fitting based on the clock speed time sequence of each satellite; and obtaining a predicted clock error of each satellite in a preset future time period based on an initial clock error value, a clock speed, and the clock speed change rate of each satellite.

Abstract: The present disclosure provides an artificial intelligence-based searching method and apparatus, a device and a computer-readable storage medium. In embodiments of the present disclosure, the search demand type is obtained according to the search keyword provided by the user, then the demand keyword is obtained according to the search keyword and the search pattern of the search demand type so that the search result can be obtained according to the demand keyword, and be output. Since the search operation is performed not completely depending on the search keyword provided by the user, but performed in conjunction with the demand keyword obtained according to the search demand type to which the search keyword belongs, the search result substantially satisfies the user's real intention.