Abstract: A camera module includes a camera assembly, a first driving assembly, and a second driving assembly. The second driving assembly is configured to drive the camera assembly and the first driving assembly to move in a first direction. The first driving assembly is configured to drive the camera assembly to rotate. The first driving assembly includes a first electric motor, a first power output element, and a first transmission drivingly connecting the first electric motor to the first power output element. The camera assembly is mounted to the first power output element.

Abstract: A volume measurement system and method for a closed water-filled karst cave, including a water collecting device, concentration tester and control system. The control system is connected to the water collecting device by a connecting piece. The water collecting device is a container with a top closed and bottom open. The water collecting device top is a piston. The piston is connected to a propulsion rod, and propulsion rod is controlled by control system to extend or retract, so as to realize the forward or backward movement of the piston. An openable and closeable placement table is hinged to the water collecting device's inner wall. The placement table is connected to piston, the placement table moves upward when piston is raised, and placement table moves downward when piston is lowered. The placement table is configured to accommodate a chemical substance.

Abstract: A fan includes a fan seat and a fan head, wherein a first surface of the fan head opposed a second surface of the fan seat. The fan further includes a first rotating shaft at edges of the first surface and the second surface configured to rotatably couple the fan seat and the fan head, such that the first surface of the fan head and the second surface of the fan seat form an target angle based on the first rotating shaft.

Abstract: A method and a device for detecting an abnormality in a click heatmap are provided. In the method, a to-be-detected region in a first click heatmap is determined. Click source data of the to-be-detected region is compared with click source data of a normal click region, to obtain a first comparison result. Whether the to-be-detected region is an abnormal click region is determined based on the first comparison result.

Abstract: Disclosed are an in-ear detection method for a wireless earphone and a wireless earphone. This method includes acquiring a position parameter sent by a position detection module; determining that the wireless earphone has left a charging box based on the position parameter; controlling an audio playback module to emit a detection acoustic wave; acquiring a detection signal and identifying acoustic parameters of the detection signal, the detection signal being generated from a reflected wave of the detection acoustic wave collected by an acoustic wave sensor; and determining whether the wireless earphone is worn in a user's ear based on the acoustic parameters.

Abstract: A camera module includes a camera assembly, a first driving assembly, and a second driving assembly. The second driving assembly is configured to drive the camera assembly and the first driving assembly to move in a first direction. The first driving assembly is configured to drive the camera assembly to rotate. The first driving assembly includes a first electric motor, a first power output element, and a first transmission drivingly connecting the first electric motor to the first power output element. The camera assembly is mounted to the first power output element.

Abstract: An air purification device includes a movement portion configured to move the air purification device to a target region; and a purification portion configured to purify air in the target region to improve air quality of the target region.

Abstract: The present disclosure provides a video recommendation method and a video recommendation apparatus, a computer device and a storage medium. The video recommendation method includes: acquiring a target short video; identifying, from candidate long videos, a target long video that the target short video is from based on a video fingerprint feature of the target short video and video fingerprint features of the candidate long videos; and recommending the target long video.

Abstract: A program file classification method, a program file classification apparatus, and a program file classification system, where the system sets an agent program in a client and a sandbox server to obtain behavior information corresponding to at least two behaviors executed by a program file at runtime. Each piece of behavior information includes a behavior identifier and a path related during execution of a corresponding behavior. A classification server performs normalization process on the path in each piece of behavior information, where the normalization process reduces path diversity, generates a feature vector according to at least two pieces of behavior information obtained after the path normalization process, and determines, according to the feature vector, a category to which the program file belongs. Because normalization process is performed on the path, randomness of a path obtained after the normalization process is reduced.

Abstract: A click heatmap abnormality detection method and apparatus, comprising: obtaining a first click heatmap, and dividing the first click heatmap into a plurality of regions (S100); for each region among the plurality of regions, respectively determining a click probability of a click action corresponding to each click source happening in the region (S200); for each click source, determining an abnormal click region corresponding to the click source according to the click probabilities (S300). The described solution determines abnormal click regions according to the click probabilities of the click actions corresponding to the click sources happening in the regions, without the need for manual identification, and with high accuracy and identification efficiency.

Abstract: An air purification apparatus for a vehicle includes a main body, and a solar module covering at least a portion of the main body and providing power to the main body. The main body is assembled on a sunroof of the vehicle, and includes a first passage connected with the sunroof of the vehicle. A cover plate is slidably assembled with the main body and capable of sliding along the main body to open or close the first passage. The main body further includes a purification module, an air inlet module having an air inlet passage capable of receiving air from outside the vehicle for the purification module to purify the received air, and an air outlet module having an air outlet passage configured to discharge air from inside the vehicle to outside the vehicle.