Abstract: A control test method includes: obtaining an experimental scheme, and performing quantization processing on experimental variables in the experimental scheme to obtain a quantization index corresponding to each of the experimental variables, in which the experimental variables include a causal variable and an outcome variable; determining an evaluation index corresponding to the quantization index of the outcome variable, and determining, based on the evaluation index, a sample size corresponding to experimental samples in the experimental scheme; and obtaining the experimental samples under the sample size, and dividing the experimental samples into the experimental group and the control group based on a control grouping condition of the experimental scheme, in which the quantization index of the causal variable corresponding to the experimental group is different from the quantization index of the causal variable corresponding to the control group.

Abstract: Provided are a content output method and apparatus, a computer-readable medium, and an electronic device. The method includes: obtaining information of each of candidate content items for a user; predicting, based on the information of each of the candidate content items by invoking a pre-trained content recommendation model, an expected benefit for each of the candidate content items resulting from a user's operation on each of the candidate content items, in which the pre-trained content recommendation model is trained historical data of the user, and the historical data includes an actual benefit resulting from a user's operation on a historical content item and information of the historical content item; and outputting a first content item based on the expected benefit for each of the candidate content items.

Abstract: According to the embodiments of the present disclosure, a method, an apparatus, a device, and a storage medium for information updating are provided. The method for information updating comprises obtaining a response result of a target object to a target item, the response result indicating a successful or a failure response of the target object to the target item. The method also comprises determining a capability update amount for the target object based on capability information of the target object, attribute information of the target item, and the response result; and updating the capability information of the target object based on the capability update amount, to obtain updated capability information of the target object.

Abstract: A SiC crystal growth device and method has a pie crucible and a heating mechanism. The pie crucible comprises a hollow inner cavity, and the center of the inner cavity is provided with a SiC crystal rod. The two ends of the SiC crystal rod are respectively abutting against the upper end face and the lower end face of the inner cavity. A SiC raw material is arranged in the circumferential direction of the inner cavity, and a gap exists between the SiC raw material and the SiC crystal rod. The heating mechanism is arranged outside the pie crucible, and is used for establishing a temperature field with gradually decreasing temperature from SiC raw materials to SiC crystal rods.