Abstract: A user identity authentication method includes: receiving first information input by a user, and obtaining intermediate information of the user from a block-chain; generating second information by using the first information and the intermediate information; and obtaining a matching result by determining whether the second information matches result information stored in the block-chain, and determining whether user identity of the user is valid according to the matching result.

Abstract: Embodiments of the present disclosure provide a method and an apparatus for vehicle driving assistance and a method and an apparatus for use in a vehicle. In the method for vehicle driving assistance, a driving assistance request is received from a first vehicle, and first vehicle information of the first vehicle is obtained. The first vehicle information at least includes a current location of the first vehicle. Second vehicle information is obtained based on the current location of the first vehicle. The second vehicle information is related to at least one vehicle entering the same curve lane or ramp as the first vehicle. A driving advice is provided to the first vehicle based on the first vehicle information and the second vehicle information.

Abstract: The present disclosure discloses a method and apparatus for determining hot zones of a human flow based on cartography. The method includes: performing statistics on density data of the human flow at each coordinate point in a region for a period of time; after the density data of the human flow at each coordinate point is used as height data at the coordinate point, drawing contours in the region by using cartography according to the height data; and after the drawn contours are used as equidensity lines of the human flow, determining the hot zones of the human flow in the region according to ranges enclosed by the equidensity lines of the human flow. With the present disclosure, a small amount of calculation is required for determining the hot zones of the human flow, and the hot zones of the human flow may be rapidly determined, to realize real-time calculation and display.

Abstract: A recommendation method, a recommendation apparatus, a recommendation device, a recommendation system and a storage medium. The recommendation method includes: acquiring user behavior information related to at least one object to be recommended; on the basis of the user behavior information, calculating a preference value of the user for the at least one object to be recommended, and constructing a preference matrix of the user for the at least one object to be recommended; on the basis of the preference matrix, acquiring a predicted preference value of the user for at least one object to be recommended of an unknown preference, and providing a recommendation parameter on the basis of the predicted preference value.

Abstract: A rights management method, a rights management device and a rights management system based on a blockchain and a storage medium are provided. The method includes: receiving a first rights statement transaction request and recording the first rights statement transaction request in the blockchain, and receiving a second rights statement transaction request and recording the second rights statement transaction request in the blockchain; the first rights statement transaction request includes a first rights statement on a first right and a first rights derivative license contract; the second rights statement transaction request includes a second rights statement on a second right and a second rights usage license contract, and the second rights statement includes: the second right is based on the first right and the first rights derivative license contract is triggered when the second rights usage license contract is executed.

Abstract: The present disclosure discloses a method and apparatus for determining hot zones of a human flow based on cartography. The method includes: performing statistics on density data of the human flow at each coordinate point in a region for a period of time; after the density data of the human flow at each coordinate point is used as height data at the coordinate point, drawing contours in the region by using cartography according to the height data; and after the drawn contours are used as equidensity lines of the human flow, determining the hot zones of the human flow in the region according to ranges enclosed by the equidensity lines of the human flow. With the present disclosure, a small amount of calculation is required for determining the hot zones of the human flow, and the hot zones of the human flow may be rapidly determined, to realize real-time calculation and display.

Abstract: A user identity authentication method includes: receiving first information input by a user, and obtaining intermediate information of the user from a block-chain; generating second information by using the first information and the intermediate information; and obtaining a matching result by determining whether the second information matches result information stored in the block-chain, and determining whether user identity of the user is valid according to the matching result.