Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for training a target action selection policy to control a target agent interacting with an environment. In one aspect, a method comprises: obtaining a set of offline training data, wherein the offline training data characterizes interaction of a baseline agent with an environment as the baseline agent performs actions selected in accordance with a baseline action selection policy; generating a set of online training data that characterizes interaction of the target agent with the environment as the target agent performs actions selected in accordance with the target action selection policy; and training the target action selection policy on both: (i) the offline training data, and (ii) the online training data, wherein the training of the target action selection policy on the offline training data is conditioned on a measure of competency of the baseline agent.

Abstract: A method for recommending digital content includes: determining user preferences and a time horizon of a given user; determining a group for the given user based on the determined user preferences; determining a number of users of the determined group and a similarity of the users; applying information including the number of users, the similarity, and the time horizon to a model selection classifier to select one of a personalized model of the user and a group model of the determined group; and running the selected model to determine digital content to recommend.

Abstract: A child safety seat includes a seat shell having two sidewalls respectively provided at a left and a right side of the seat shell for restricting sideways movement of a child sitting on the seat shell, the two sidewalls including a first and a second sidewall, a buffering part movably connected with the seat shell, the buffering part being movable between a stowed position where the buffering part is retracted toward the first sidewall, and a deployed position where the buffering part protrudes sideways from the first sidewall, and a latching mechanism including a latch carried with the buffering part, the latch being movable relative to the buffering part between a locking state for locking the buffering part in position relative to the seat shell and an unlocking state for unlocking the buffering part so that the buffering part is rotatable relative to the seat shell.

Abstract: Various embodiments are disclosed for providing machine learning routines with peripheral device data to infer driver activity and location. Peripheral device data may be collected on a peripheral device having a machine learning routine executing thereon to infer driver activity and perform improved estimation of driver location. Using driver activity and location estimation, contextually relevant delivery workflow assistance may be automatically provided to a delivery driver or other individual without requiring manual input, thereby improving driver safety and operational efficiency.

Abstract: A buckle assembly includes a first buckle component, a second buckle component and an operating component. The first buckle component includes a locked portion. The second buckle component includes a locking portion. The locking portion engages with the locked portion along a lateral direction of the buckle assembly when the second buckle component is mated with the first buckle component along a mating direction. The operating component is partially embedded in and partially exposed out of the second buckle component. The operating component is slidable relative to the second buckle component. The operating component drives the locking portion to move away from the locked portion for disengaging the locking portion from the locked portion during a sliding movement of the operating component relative to the second buckle component. The present invention has advantage of saving labor and easy operation.

Abstract: A high electron mobility transistor device including a channel layer, a first barrier layer, and a P-type gallium nitride layer is provided. The first barrier layer is disposed on the channel layer. The P-type gallium nitride layer is disposed on the first barrier layer. The first thickness of the first barrier layer located directly under the P-type gallium nitride layer is greater than the second thickness of the first barrier layer located on two sides of the P-type gallium nitride layer.

Abstract: An air pump assembly for an inflatable product may include a housing, a cover coupled to the housing, and a rotatable assembly supported by the housing. The rotatable assembly may include a pump housing having first and second air vents, an impeller positioned within the pump housing, a motor operatively coupled to the impeller, and a rotary disc positioned between the pump housing and a vent hole of the housing. The rotatable assembly may be rotatable to a first position wherein air flows from the first air vent of the pump housing to the second air vent of the pump housing and through the vent hole in the housing into an interior of the inflatable product and a second position wherein air flows from the interior of the inflatable product through the vent hole in the housing into the first air vent and then to the second air vent.

Abstract: An information transmission method includes a step of receiving first downlink control information. The first downlink control information includes frequency hopping indication information of a physical uplink control channel (PUCCH) and/or transmission mode indication information of the PUCCH, or the first downlink control information is downlink control information scrambled by a first radio network temporary identifier. The method further includes performing data transmission based on the downlink control information. Based on the first downlink control information, the terminal device can perform frequency hopping to obtain a frequency diversity gain and to improve flexibility. Also transmission may be repeated to improve transmission performance, and a frequency resource may be adjusted to achieve load balancing or obtain a frequency diversity gain.

Abstract: An adjustable attachment structure for a swimming machine is disclosed. The attachment structure is configured to interact with a frame of a pool. A user may interact with a locking switch to transition the attachment structure between a locked and an unlocked state. In the unlocked state, the swimming machine may be rotated about an axis to direct a generated current in a number of directions.

Abstract: A child safety seat includes a restraining device, and an alert device and a switch serially connected in a series circuit. The restraining device includes a strap and a tether connector provided at a free end of the strap, the restraining device having an idle position and a deployed position, the restraining device being arranged in the deployed position to engage with a corresponding structure provided in a vehicle for restraining the child safety seat. The switch is operatively coupled to the restraining device and has an open state and a closed state, each of the open state and the closed state of the switch uniquely corresponding to one of the idle position and the deployed position of the restraining device. The alert device is activable to emit an alert signal when the series circuit is closed.

Abstract: A buckle assembly can include a first buckle, a second buckle, and an operating component. The first buckle component can include a locked portion. The second buckle component can be configured to be engaged with the first buckle component, and the second buckle component can include a locking portion engageable with the locked portion. The operating component can be partially embedded in the second buckle component and partially exposed out of the second buckle component. The operating component can be slidable relative to the second buckle component such that sliding movement of the operating component relative to the second buckle component causes disengagement between the first buckle component and the second buckle component. The operating component can include an abutting portion, and the abutting portion can abut against the locking portion to resiliently deform the locking portion during the sliding movement of the operating component.

Abstract: A child safety seat includes a seat shell and a buffering part. The seat shell includes a backrest portion having a front surface and at least one sidewall arranged at a side of the front surface, and an opening is formed in the sidewall. The buffering part is arranged at the sidewall, the buffering part being rotatable relative to the sidewall between a first position and a second position, wherein the buffering part is positioned at the sidewall such that during a sideways collision the buffering part urges the sidewall to bend inwardly.

Abstract: A high and low-pressure integrated air pump includes a single housing including an air inlet and an air outlet. A high-pressure pump is disposed within the housing and in fluid communication with the air inlet, and uses a first outlet passage to discharge to the air outlet. A low-pressure pump is also disposed within the housing and in fluid communication with the air inlet, and uses a second outlet passage to discharge to the air outlet.

Abstract: An unlock device includes at least one operating member, a retaining mechanism and at least one unlock module. The at least one operating member is movably disposed on a frame, wherein the frame is equipped with at least one lock mechanism. The retaining mechanism is disposed on the at least one operating member. The at least one unlock module is movably disposed on the frame and connected to the at least one lock mechanism. When the at least one operating member moves to drive the at least one unlock module to move to unlock the at least one lock mechanism, the retaining mechanism retains the at least one operating member at an unlock position.

Abstract: A child safety seat includes a seat shell and a buffering part. The seat shell includes a backrest portion and two sidewalls, the backrest portion having a front surface facing forward that is suitable to provide support for a child's back, the two sidewalls being respectively disposed at a left and a right side of the seat shell for restricting sideways movements of a child who sits in the seat shell, one of the two sidewalls having a sidewall portion located in front of the front surface. The buffering part is connected with the seat shell, the buffering part being operable to protrude sideways at an outer side of the sidewall portion.

Abstract: Methods, systems, and non-transitory computer readable storage media are disclosed for utilizing offline models to warm start online bandit learner models. For example, the disclosed system can determine relevant offline models for an environment based on reward estimate differences between the offline models and the online model. The disclosed system can then utilize the relevant offline models (if any) to select an arm for the environment. The disclosed system can update the online model based on observed rewards for the selected arm. Additionally, the disclosed system can also use entropy reduction of arms to determine the utility of the arms in differentiating relevant and irrelevant offline models. For example, the disclosed system can select an arm based on a combination of the entropy reduction of the arm and the reward estimate for the arm and use the observed reward to update an observation history.

Abstract: An air pump assembly (100) for an inflatable product (10) having an interior (12) is provided. The air pump assembly (100) may comprise a housing (120) having a vent hole (200) in fluid communication with the interior (12) of the inflatable product (10). The air pump assembly (100) may further comprise a cover (240) coupled to the housing. The cover may include a plurality of vent openings (244). The air pump assembly (100) may further comprise a rotatable assembly (104) supported by the housing (120). The rotatable assembly (104) may comprise a pump housing (112) having a first air vent (136) and a second air vent (138); an impeller (114) positioned in the pump housing; and a motor (110) operatively coupled to the impeller to drive a rotation of the impeller.

Abstract: A child carrier having a carrier body for carrying a child; a safety belt connected to the carrier body) the safety belt being capable of restraining the child seated in the carrier body; and a buffer assembly connected to the carrier body and the safety belt, the buffer assembly configured to generate a buffering movement responsive to the child carrier being subjected to an impact or sudden deceleration. Responsive to the child carrier being subjected to an impact or sudden deceleration, the buffer assembly connected to the safety belt can generate a buffering movement under the action of inertia, thereby absorbing some of the energy of the impact or sudden deceleration and preventing the safety belt from exerting an excessive restraining and pulling force on the child.

Abstract: An inflatable product can be inflated to a low pressure by a lower-power but high-volume electric pump, then “firmed” or fully inflated by an auxiliary pump. The auxiliary pump may be manually powered, such that the overall cost and complexity of the electric and auxiliary pumps are still lower than a high-power electric pump. The low power high volume electric pump can be easily powered by small batteries that will also provide an increased number of inflations compared to traditional high-power pumps for a given battery capacity. Using small batteries allows the pump to be very compact in size. The auxiliary pump may work through an auxiliary air chamber within the primary air chamber and fluidly connected thereto by a check valve. The electric pump may be reversible to provide for both inflation and deflation.