AN APPARATUS, METHOD AND COMPUTER PROGRAM PRODUCT FOR DETERMINING A LEVEL OF RISK

    公开(公告)号:US20230376874A1

    公开(公告)日:2023-11-23

    申请号:US18031344

    申请日:2021-10-06

    CPC classification number: G06Q10/0635 G06Q40/02

    Abstract: An apparatus for determining a level of risk that a future transfer will exceed a level of reserve is provided by the present disclosure, the apparatus comprising circuitry configured to: obtain data of transfers between financial institutions which have occurred at a number of instances of time, the data including transfer amounts; apply a predictive model to the data to obtain a prediction of the transfer amount at each instance of time; determine a maximum residual between the prediction of the transfer amount and the transfer amount at each instance of time; model the maximum residual for each instance of time using a generalised extreme value distribution to obtain a distribution function; and determine the level of risk that a future transfer between financial institutions will exceed the level of reserve based on the distribution function which has been obtained.

    PREDICTING FRAUDULENT TRANSACTIONS

    公开(公告)号:US20240420146A1

    公开(公告)日:2024-12-19

    申请号:US18747982

    申请日:2024-06-19

    Abstract: A computer implemented method of training a model, using a machine learning process, to predict whether a transaction of a digital currency stored in a blockchain is fraudulent, comprises: unpacking (202) a block in the blockchain into a table comprising one or more rows of input and output data for a previous transaction stored in the block and aggregating (204) the one or more rows of input and output data to form an aggregated row of transaction data for the previous transaction. The method further comprises labelling (206) the aggregated row of transaction data for the previous transaction according to whether the previous transaction was fraudulent and using (208) the aggregated row of transaction data and the label as training data with which to train the model.

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