FEATURE RANDOMIZATION FOR SECURING MACHINE LEARNING MODELS

    公开(公告)号:US20220237482A1

    公开(公告)日:2022-07-28

    申请号:US17159463

    申请日:2021-01-27

    申请人: Intuit Inc.

    IPC分类号: G06N5/04 G06N20/00

    摘要: Feature randomization for securing machine learning models includes receiving an event, and altering, responsive to receiving the event, a threshold pseudo-randomly to generate an altered threshold value. Feature randomization further includes applying the altered threshold value to a threshold-dependent feature to generate an altered threshold-dependent feature value. The altered threshold-dependent feature value determined at least in part from the event. Feature randomization further includes executing a machine learning model, on the event and the altered threshold-dependent feature value, to generate a predicted event type for the event.

    Feature extraction and time series anomaly detection over dynamic graphs

    公开(公告)号:US12118077B2

    公开(公告)日:2024-10-15

    申请号:US17154293

    申请日:2021-01-21

    申请人: Intuit Inc.

    摘要: A plurality of graph snapshots for a plurality of consecutive periodic time samples maps between connected components in consecutive graph snapshots and describes at least one feature of each connected component. A recursively-built tree tracks an evolution of one of the connected components through the plurality of graph snapshots, the tree including a root node representing the connected component at a final one of the consecutive periodic time samples and a plurality of leaf nodes branching from the root node. A plurality of paths is extracted from the tree by traversing the tree from the root node to respective ones of the plurality of leaf nodes. Each path contains data describing an evolution of a respective one of the connected components through time as indicated by evolution of the at least one feature of the respective one of the connected components. Each of the plurality of paths is converted into a respective numerical vector of a plurality of numerical vectors that may be used as inputs to a time series anomaly detection algorithm.

    FEATURE EXTRACTION AND TIME SERIES ANOMALY DETECTION OVER DYNAMIC GRAPHS

    公开(公告)号:US20220229903A1

    公开(公告)日:2022-07-21

    申请号:US17154293

    申请日:2021-01-21

    申请人: Intuit Inc.

    摘要: A plurality of graph snapshots for a plurality of consecutive periodic time samples maps between connected components in consecutive graph snapshots and describes at least one feature of each connected component. A recursively-built tree tracks an evolution of one of the connected components through the plurality of graph snapshots, the tree including a root node representing the connected component at a final one of the consecutive periodic time samples and a plurality of leaf nodes branching from the root node. A plurality of paths is extracted from the tree by traversing the tree from the root node to respective ones of the plurality of leaf nodes. Each path contains data describing an evolution of a respective one of the connected components through time as indicated by evolution of the at least one feature of the respective one of the connected components. Each of the plurality of paths is converted into a respective numerical vector of a plurality of numerical vectors that may be used as inputs to a time series anomaly detection algorithm.