Abstract: This application disclose a method for constructing an indoor map. The method includes: obtaining a plurality of first tracks and a second track, where each first track is a flat-layer track located on an indoor horizontal layer, the second track is a cross-layer track located between different indoor horizontal layers, and a first wireless signal information similarity between each first track point of the first track and each second track point is less than a first threshold; and performing layering on the plurality of first tracks based on a second wireless signal information similarity between the plurality of first tracks, to obtain a layering result, where the layering result may be used to construct an indoor map.

Abstract: A data processing method is provided, the method including: obtaining crowd-sourced data, where each instance of the crowd-sourced data includes first location information of a terminal at a location point and received radio signal information, the location point is within a preset area, and the first location information indicates a relative location of the location point with respect to a preset location point; obtaining, based on the crowd-sourced data, a plurality of first similarities and a second similarity corresponding to each first similarity; determining a target mapping relationship based on the plurality of first similarities and the second similarity corresponding to each first similarity; and obtaining a plurality of preset trajectories within the preset area, and performing trajectory fusion on the plurality of preset trajectories with the target mapping relationship as a constraint, to obtain a trajectory fusion result.

Abstract: An activity recognition method, a display method, and an electronic device are disclosed. The electronic device can obtain a plurality of poses of the electronic device, and obtain one or more pieces of feature data based on the plurality of poses by using a plurality of one-dimensional convolutional layers, where each of the one or more pieces of feature data indicates a motion state of a person holding the electronic device, an action of the person, or a tool carrying the person. Then, the electronic device displays, as an icon, the types of information indicated by the one or more pieces of feature data.

Abstract: This application provides an indoor map generation method and apparatus. In the method, a plurality of first tracks are obtained based on a PDR algorithm. A plurality of first target tracks are further selected from the plurality of first tracks, and at least one second track corresponding to each first target track is extended to the first target track based on the first target track, to obtain a branch. The obtained branches are combined, to obtain a map.

Abstract: A road matching based positioning method includes obtaining coordinates of a current location after a positioning request of an application is received, searching a database for data of segments near the current location, determining a segment crosspoint based on start point coordinates and end point coordinates of the segments and respective attributes of the segments, and obtaining coordinates of the segment crosspoint, and performing road matching using a positioning point and a road network topology to obtain coordinates of the positioning point after correction, and sending the coordinates of the positioning point after correction to the application that presents the coordinates to a user. The road network topology can be reconstructed at an operating system layer by using simplified segment data, and a high-precision positioning service is implemented through road matching.

Abstract: A road matching based positioning method includes obtaining coordinates of a current location after a positioning request of an application is received, searching a database for data of segments near the current location, determining a segment crosspoint based on start point coordinates and end point coordinates of the segments and respective attributes of the segments, and obtaining coordinates of the segment crosspoint, and performing road matching using a positioning point and a road network topology to obtain coordinates of the positioning point after correction, and sending the coordinates of the positioning point after correction to the application that presents the coordinates to a user.