公开(公告)号：US20220311790A1

公开(公告)日：2022-09-29

申请号：US17418873

申请日：2020-09-29

Applicant: RAKUTEN GROUP, INC.

Inventor： Dinesh DAULTANI ,  Bruno Andre CHARRON

IPC: H04L9/40

Abstract: An input data generation unit is configured to generate, based on log data indicating a log of a behavior of a user with respect to a given computer resource for each period, input data for the period, which is associated with the log data. A user probability data generation unit is configured to generate user probability data based on output obtained from a trained machine learning model when the input data is input to the trained machine learning model. An anomaly determination unit is configured to determine whether an anomaly has occurred in the behavior of the user during a latest period based on the user probability data generated based on the input data for the latest period and the user probability data generated based on the input data for a period before the latest period.

公开(公告)号：US20210406932A1

公开(公告)日：2021-12-30

申请号：US17056071

申请日：2020-01-20

Applicant: Rakuten Group, Inc.

Inventor： Dinesh DAULTANI ,  Bruno Andre CHARRON

IPC: G06Q30/02 ,  G06Q40/04

Abstract: An information processing apparatus includes a first fitness calculation unit for calculating a fitness using a predetermined function for each of a plurality of models belonging to a population; a virtual model generating unit for selecting, as parent models, a plurality of models having higher value of the fitness among the plurality of models, and generating a virtual model that outputs an output result obtained by performing calculation of output results of the selected plurality of parent models; a second fitness calculation unit for calculating the fitness of the virtual model using the predetermined function; a model replacing unit for replacing the models constituting the population by adding the virtual model to the population and by deleting a model having a lower value of the fitness from the population; and a model extracting unit for extracting a model having a higher value of the fitness from the population.

公开(公告)号：US20210383476A1

公开(公告)日：2021-12-09

申请号：US17055828

申请日：2019-10-31

Applicant: Rakuten Group Inc.

Inventor： Matthew AMES ,  Bruno Andre CHARRON

IPC: G06Q40/06

Abstract: Disclosed herein is a core rate generating apparatus (1), comprising: a rate acquiring unit (12) configured to acquire a plurality of rates respectively generated by a plurality of counterparties; a median value calculation unit (13) configured to calculate a median value of whole of the plurality of rates of the plurality of counterparties; a difference calculation unit (13) configured to calculate a first difference between each of the plurality of rates and the median value for each of the plurality of counterparties; a weight deriving unit (14) configured to derive, based on the first difference, a weight for each of the plurality of counterparties; and a core rate generation unit (15) configured to apply, for each of the plurality of counterparties, the weight to each of the rates and generate a core rate.