Masked projected gradient transfer attacks

    公开(公告)号:US11948054B2

    公开(公告)日:2024-04-02

    申请号:US17083928

    申请日:2020-10-29

    CPC classification number: G06N20/00 H04L63/1416 H04L63/1466

    Abstract: A system and method for transferring an adversarial attack involving generating a surrogate model having an architecture and a dataset that mirrors at least one aspect of a target model of a target module, wherein the surrogate model includes a plurality of classes. The method involves generating a masked version of the surrogate model having fewer classes than the surrogate model by randomly selecting at least one class of the plurality of classes for removal. The method involves attacking the masked surrogate model to create a perturbed sample. The method involves generalizing the perturbed sample for use with the target module. The method involves transferring the perturbed sample to the target module to alter an operating parameter of the target model.

    UNSUPERVISED MACHINE LEARNING LEVERAGING HUMAN COGNITIVE ABILITY LEARNING LOOP WORKFLOW

    公开(公告)号:US20230394119A1

    公开(公告)日:2023-12-07

    申请号:US18322643

    申请日:2023-05-24

    CPC classification number: G06F18/2431 G06F18/23

    Abstract: Disclosed is a method for developing a model to classify data. The method involves receiving plural data points, grouping each data point into one or more groups via a clustering algorithm, assigning each data point an index based one or more groups into which each data point is grouped, and classifying all indexed-data points of a group and labelling the classified indexed-data points of the group with the same label. Also disclosed is a method for classifying data. The method involves receiving incoming data points, comparing the incoming data points to a corpus of labelled data points, the corpus of labelled data points including data points that have been grouped via a clustering algorithm and labelled with a same label, and labeling an incoming data point with a label based on a match between the incoming data point and a labelled data pack.

    Open cycle thermal management system with a vapor pump device and recuperative heat exchanger

    公开(公告)号:US11761685B1

    公开(公告)日:2023-09-19

    申请号:US16807582

    申请日:2020-03-03

    CPC classification number: F25B19/00 F25B49/022 F28C1/14

    Abstract: A thermal management system that includes an open-circuit refrigeration system having an open-circuit refrigerant fluid flow path is described. The open-circuit refrigeration system includes a receiver configured to store a refrigerant fluid, an evaporator configured to receive the refrigerant fluid at a evaporator inlet and to extract heat from a heat load that contacts the evaporator, and provide refrigerant vapor at a evaporator outlet. The open-circuit refrigeration system also includes a vapor pump device having a vapor pump inlet that receives the refrigerant vapor and having a vapor pump outlet that outputs compressed refrigerant vapor to an exhaust line coupled to the vapor pump outlet, with the receiver, the evaporator, the vapor pump device, and the exhaust line connected in the open-circuit refrigerant fluid flow path.

    SYSTEM AND METHOD FOR MODELING CORRELATION IN A SOURCING MODEL USING SIMILARITY MATRIX DECOMPOSITION

    公开(公告)号:US20230267244A1

    公开(公告)日:2023-08-24

    申请号:US17517241

    申请日:2021-11-02

    CPC classification number: G06F30/20 G06F17/16 G06F2111/10

    Abstract: Embodiments relate to a system for modeling correlation in a sourcing model. The system can include a processor configured to collect voting output from plural voting sources and store the voting output in memory. The system can include a correlation modeling module configured to retrieve at least two voting outputs from memory. In some embodiments each voting output is from a different voting source. The correlation modeling module can determine correlation among at least two voting sources by measuring consensus among the at least two voting sources using an agreement metric. The correlation modeling module can determine a degree of a first-order interaction among the at least two voting sources. The correlation modeling module can determine a degree of correlation among the at least two voting sources having a degree of first-order interaction.

    DIRECTED ENERGY SYSTEM
    76.
    发明公开

    公开(公告)号:US20230266555A1

    公开(公告)日:2023-08-24

    申请号:US18173568

    申请日:2023-02-23

    CPC classification number: G02B6/4458 G02B6/4477 G02B6/448

    Abstract: A directed energy system includes a gimbal assembly that includes a turret configured to rotate about a first axis, and a directed energy head coupled to the turret and configured to rotate about a second axis that is orthogonal to the first axis. The system further includes an optical fiber spooling ring comprised of a fiber cable at least partially threaded through the gimbal assembly and including a plurality of optical fibers configured to transmit optical energy. The optical fiber spooling ring includes a plurality of 360 degree rotations of the fiber cable.

    Thermal management systems
    78.
    发明授权

    公开(公告)号:US11639818B2

    公开(公告)日:2023-05-02

    申请号:US17849378

    申请日:2022-06-24

    Abstract: A thermal management system includes a receiver configured to store a refrigerant fluid; a refrigeration system having a refrigerant fluid path that includes the receiver, and at least one evaporator disposed in the refrigerant fluid path. The refrigeration system is configured to receive the refrigerant fluid from the receiver through the refrigerant fluid path. The at least one evaporator is configured to receive the refrigerant fluid and to extract heat from at least one heat load having a specified thermal inertia that is in at least one of thermal conductive or convective contact with the at least one evaporator.

    Thermal management systems and methods for cooling a heat load with a refrigerant fluid managed with a closed-circuit cooling system

    公开(公告)号:US11635237B1

    公开(公告)日:2023-04-25

    申请号:US17231092

    申请日:2021-04-15

    Abstract: A thermal management system includes an open-circuit refrigeration system including a cooling system configured to supply a cooling medium. The open-circuit refrigeration system includes a receiver having a receiver outlet, the receiver configurable to store a refrigerant fluid, the receiver configured to receive the cooling medium from the cooling system, an evaporator coupled to the receiver outlet, the evaporator configurable to receive liquid refrigerant fluid from the receiver outlet and to extract heat from a heat load when the heat load contacts or is proximate to the evaporator a control device configurable to control a temperature of the heat load and an exhaust line, with the receiver, the evaporator, and the exhaust line coupled to form an open-circuit refrigerant fluid flow path.

    Thermal management systems
    80.
    发明授权

    公开(公告)号:US11561033B1

    公开(公告)日:2023-01-24

    申请号:US16872590

    申请日:2020-05-12

    Abstract: A thermal management system includes a refrigerant receiver having a refrigerant receiver outlet and a refrigerant receiver inlet, with the refrigerant receiver configured to store a refrigerant fluid, an ejector having a primary flow inlet coupled to receive the refrigerant fluid from the receiver, a secondary flow inlet and an outlet. The system also includes a liquid separator having an inlet, a vapor side outlet, and a liquid side outlet, an evaporator arrangement to extract heat from a heat load proximate or in contact with the evaporator arrangement, with the evaporator arrangement coupled to the ejector and the liquid separator, a closed-circuit refrigeration system having a closed-circuit fluid path including the refrigerant receiver, the evaporator arrangement, and the liquid separator, the closed-circuit refrigeration system configured to receive refrigerant fluid from the refrigerant receiver, and an open-circuit refrigeration system having an open-circuit fluid path that includes the receiver, the evaporator arrangement, and the liquid separator, that is configured to receive refrigerant fluid from the refrigerant receiver.

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