Abstract: A device configured to collect to-be-verified identity information of a user and a device configured to verify the to-be-verified identity information may perform a user identity verification method. The device configured to collect the to-be-verified identity information or the device configured to verify the to-be-verified identity information may determine a target identity verification manner applicable to a non-self device from a plurality of identity verification manners based on device information of the non-self device.

Abstract: The present disclosure pertains to a system that may be configured to operate a power grid, including generation participants, consumers, and a controller that administers a market for the power generation participants and the consumers on the power grid. The operation of the power grid may include: performing power grid coordination calculations based upon, at least in part, constraints that pertain to the flow and/or congestion of power on the grid; and managing the coordination calculations by reducing a number of constraints used in the coordination calculations, the managing including a first step of coarse screening of the constraints, a second step of deterministic fine screening of the constraints, and a third step of statistical fine screening of the constraints. This second step may cause identification of constraints that are redundant and/or dominated by other constraints.

Abstract: A user profile generation method and an apparatus. The method includes: sending, by a terminal, at least one short-term user profile generated for a user to a server, where the at least one short-term user profile reflects a behavioral characteristic of the user in first duration; receiving, by the terminal, a long-term user profile generated by the server for the user, where the long-term user profile is generated by the server at least based on the at least one short-term user profile, the long-term user profile reflects a behavioral characteristic of the user in second duration, and the first duration is longer than the second duration; and providing, by the terminal, at least a part of the long-term user profile for a first application.

Abstract: The present disclosure pertains to a system that may be configured to operate a power grid, including generation participants, consumers, and a controller that administers a market for the power generation participants and the consumers on the power grid. The operation of the power grid may include: performing power grid coordination calculations based upon, at least in part, constraints that pertain to the flow and/or congestion of power on the grid; and managing the coordination calculations by reducing a number of constraints used in the coordination calculations, the managing including a first step of coarse screening of the constraints, a second step of deterministic fine screening of the constraints, and a third step of statistical fine screening of the constraints. This second step may cause identification of constraints that are redundant and/or dominated by other constraints.