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公开(公告)号:US20240078436A1
公开(公告)日:2024-03-07
申请号:US18259563
申请日:2021-01-04
Applicant: Robert Bosch GmbH , TSINGHUA UNIVERSITY
Inventor: Hang Su , Jun Zhu , Zhengyi Wang , Hao Yang
IPC: G06N3/094
CPC classification number: G06N3/094
Abstract: A method for generating adversarial examples for a Graph Neural Network (GNN) model. The method includes: determining vulnerable features of target nodes in a graph based on querying the GNN model, wherein the graph comprising nodes including the target nodes and edges, each of the edges connecting two of the nodes; grouping the target nodes into a plurality of clusters according to the vulnerable features of the target nodes; and obtaining the adversarial examples based on the plurality of clusters.
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公开(公告)号:US20240037390A1
公开(公告)日:2024-02-01
申请号:US18249162
申请日:2020-10-15
Applicant: Robert Bosch GmbH , Tsinghua University
Inventor: Jun Zhu , Zhijie Deng , Yinpeng Dong , Chao Zhang , Kevin Yang
Abstract: A method for training a weight-sharing neural network with stochastic architectures is disclosed. The method includes (i) selecting a mini-batch from a plurality of mini-batches, a training data set for a task being grouped into the plurality of mini-batches and each of the plurality of mini-batches comprising a plurality of instances: (ii) stochastically selecting a plurality of network architectures of the neural network for the selected mini-batch; (iii) obtaining a loss for each instance of the selected mini-batch by applying the instance to one of the plurality of network architectures; and (iv) updating shared weights of the neural network based on the loss for each instance of the selected mini-batch.
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公开(公告)号:US20230394304A1
公开(公告)日:2023-12-07
申请号:US18248917
申请日:2020-10-15
Applicant: Robert Bosch GmbH , Tsinghua University
Inventor: Jun Zhu , Fan Bao , Chongxuan Li , Kun Xu , Hang Su , Siliang Lu
IPC: G06N3/08
CPC classification number: G06N3/08
Abstract: A method for training neural networks based on energy-based latent variable models (EBLVMs) includes bi-level optimizations based on a score matching objective. The lower-level optimizes a variational posterior distribution of the latent variables to approximate the true posterior distribution of the EBLVM, and the higher-level optimizes the neural network parameters based on a modified SM objective as a function of the variational posterior distribution. The method is used to train neural networks based on EBLVMs with nonstructural assumptions.
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公开(公告)号:US20240256889A1
公开(公告)日:2024-08-01
申请号:US18565510
申请日:2021-05-31
Applicant: ROBERT BOSCH GMBH , TSINGHUA UNIVERSITY
Inventor: Hang Su , Jun Zhu , Tianyu Pang , Xiao Yang , Yinpeng Dong , Zhijie Deng , Ze Cheng
IPC: G06N3/094
CPC classification number: G06N3/094
Abstract: A method for deep learning. The method includes: receiving, by a deep learning model, a plurality of samples and a plurality of labels corresponding to the plurality of samples; adversarially augmenting, by the deep learning model, the plurality of samples based on a threat model; and assigning, by the deep learning model, a low predictive confidence to one or more adversarially augmented samples of the plurality of adversarially augmented samples having noisy labels due to the adversarially augmenting based on the threat model.
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公开(公告)号:US20240086716A1
公开(公告)日:2024-03-14
申请号:US18263576
申请日:2021-02-26
Applicant: Robert Bosch GmbH , TSINGHUA UNIVERSITY
Inventor: Hang Su , Jun Zhu , Zhijie Deng , Ze Cheng
IPC: G06N3/094
CPC classification number: G06N3/094
Abstract: A method for training a deep neural network (DNN) capable of adversarial detection. The DNN is configured with a plurality of sets of weights candidates. The method includes inputting training data selected from training data set to the DNN. The method further includes calculating, based on the training data, a first term for indicating a difference between a variational posterior probability distribution and a true posterior probability distribution of the DNN. The method further includes perturbing the training data to generate perturbed training data; and calculating a second term for indicating a quantification of predictive uncertainty on the perturbed training data. The method further includes updating the plurality of sets of weights candidates of the DNN based on augmenting the summation of the first term and the second term.
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公开(公告)号:US20240185023A1
公开(公告)日:2024-06-06
申请号:US18546842
申请日:2021-03-03
Applicant: Robert Bosch GmbH , TSINGHUA UNIVERSITY
Inventor: Bo Zhang , Chongxuan Li , Hang Su , Jun Zhu , Ke Su , Siliang Lu , Ze Cheng
Abstract: A method for visual reasoning. The method includes: providing a network with sets of inputs and sets of outputs, wherein each set of inputs of the sets of inputs mapping to one of a set of outputs corresponding to the set of inputs based on visual information on the set of inputs, and wherein the network comprising a Probabilistic Generative Model (PGM) and a set of modules; determining a posterior distribution over combinations of one or more modules of the set of modules through the PGM, based on the provided sets of inputs and sets of outputs; and applying domain knowledge as one or more posterior regularization constraints on the determined posterior distribution.
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公开(公告)号:US11650402B2
公开(公告)日:2023-05-16
申请号:US16999222
申请日:2020-08-21
Applicant: Tsinghua University , HON HAI PRECISION INDUSTRY CO., LTD.
Inventor: Jun Zhu , Rui-rui Tang , Wei-Chen Wu , Guo-Fan Jin , Shou-Shan Fan
CPC classification number: G02B17/0642 , G02B5/10 , G02B27/0012
Abstract: A freeform surface off-axial three-mirror imaging system is provided. The freeform surface off-axial three-mirror imaging system comprises a primary mirror, a secondary mirror, and a compensating mirror. The primary mirror, the secondary mirror, and the compensating mirror are located adjacent and spaced away from each other. A surface shape of each of the primary mirror and the secondary mirror is a quadric surface. The primary mirror is used as an aperture stop. A surface shape of the compensating mirror is a freeform surface. A light emitted from a light source is reflected by the primary mirror, the secondary mirror, and the compensating mirror to form an image on an image plane.
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公开(公告)号:US10527255B2
公开(公告)日:2020-01-07
申请号:US15787718
申请日:2017-10-19
Applicant: Tsinghua University , HON HAI PRECISION INDUSTRY CO., LTD.
Inventor: Jun Zhu , Xiao-Fei Wu , Guo-Fan Jin , Shou-Shan Fan
IPC: F21V5/04
Abstract: An illumination system with freeform surface comprises a plurality of collimated light sources having same parameters and a freeform surface lens comprising a first freeform surface and a second freeform surface, wherein formula of the first freeform surface and the second freeform surface is expressed as follows: z = c ( x 2 + y 2 ) 1 + 1 - ( 1 + k ) c 2 ( x 2 + y 2 ) + ∑ m ∑ n A mn x m y n , in which c is the curvature of the conic surface at the vertex, k is the conic constant, Amn represents the xy polynomials coefficient, m+n≥2 and both m and n are even, beams emitted by the plurality of collimated light sources pass through the freeform surface lens to form a plurality of light spots on a target plane.
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公开(公告)号:US10387580B2
公开(公告)日:2019-08-20
申请号:US14616457
申请日:2015-02-06
Applicant: Tsinghua University , HON HAI PRECISION INDUSTRY CO., LTD.
Inventor: Tong Yang , Jun Zhu , Guo-Fan Jin , Shou-Shan Fan
Abstract: A method for designing freeform surface is provided. An initial surface is established. A plurality of feature rays are selected. A plurality of intersections of the plurality of feature rays with an unknown freeform surface are calculated based on a given object-image relationship and a vector form of the Snell's law. The plurality of intersections are a plurality of feature data points. An unknown freeform surface equation is obtained by surface fitting the plurality of feature data points.
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公开(公告)号:US10386619B2
公开(公告)日:2019-08-20
申请号:US15691886
申请日:2017-08-31
Applicant: Tsinghua University , HON HAI PRECISION INDUSTRY CO., LTD.
Inventor: Jun Zhu , Wei Hou , Guo-Fan Jin , Shou-Shan Fan
Abstract: A oblique camera lens includes: a primary mirror configured to reflect a light ray to form a first reflected light; a secondary mirror located on a first path of light reflected from the primary mirror and configured to reflect the first reflected light to form a second reflected light; a tertiary mirror located on a second path of light reflected from the secondary mirror and configured to reflect the second reflected light to form a third reflected light; and an image sensor located on a third path of light reflected from the tertiary mirror and configured to receive the third reflected light; wherein each of the first reflecting surface and the third reflecting surface is a sixth order xy polynomial freeform surface; and a field of view of oblique camera lens in an Y-axis direction is greater or equal to 35° and less than or equal to 65°.
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