Tsinghua University

Beijing Zitiao Network Technology Co., Ltd.

Ziwei Li

Ke Xu

Yi Zhao

Qionghai Dai

Huayun Miao

Wenshu Zhang

Su Yao

The embodiment of the invention provides a method, an apparatus, an electronic device and a storage medium for playback control. The method comprises the following steps: playing a first video in a video playback page; in response to target triggering on the video playback page, stopping displaying a video screen of the first video, and playing audio data of the first video, where the target triggering is at least one of sliding and multi-finger touching.

Method, apparatus, electronic device and storage medium for playback control

A method and an apparatus for actively defending against backdoor attacks under an edge computing scenario. The method includes: generating an initial optional operation set based on optional operations configured to enhance a model generalization ability, and constructing a configuration parameter set for each operation in the set; selecting a first subset with a curve between configuration parameters and model accuracies of the operation presenting a monotonically decreasing concave function characteristic; selecting a second subset with a curve of the operation between configuration parameters and probabilities that a model is successfully attacked by the backdoor attack presenting a monotonically decreasing convex function characteristic; constructing a mutation characteristic set for each operation in an intersection of the first and second subsets; and for each operation in the intersection, determining a final parameter setting value of the operation based on the mutation characteristic set, to actively defend against possible backdoor attacks.

Method and apparatus for actively defending against backdoor attacks under edge computing scenario

A microscopy imaging system is disclosed. The system includes: a femtosecond laser; an acousto-optic modulator, configured to periodically modulate an intensity of a laser light; a line-scanning component, configured to focus the laser light to form a line-shaped beam and to scan in a direction perpendicular to the line-shaped beam; a chromatic dispersion component, configured to generate spatial chirped laser pulses; a collimating lens, configured to converge components with different wavelengths dispersed by the chromatic dispersion component to propagate in parallel; a microscope component, configured to guide light passing through the collimating lens to illuminate the sample and capture a fluorescence image at a focal plane; and a synchronous control component, configured to synchronously control the acousto-optic modulator to modulate the intensity of the laser light, the line-scanning component to scan and the microscope component to capture fluorescence images, such that a reconstructed image is obtained according to the images.

Structured illumination microscopy imaging system based on line-scanning spatiotemporal focusing

Growing community of inventors

Beijing, China

Ziwei Li