- 专利标题: DEVICE, METHOD, AND SYSTEM FOR CONCEPT DRIFT DETECTION
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申请号: US17697067申请日: 2022-03-17
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公开(公告)号: US20230069347A1公开(公告)日: 2023-03-02
- 发明人: Jana Backhus , Mineyoshi Masuda
- 申请人: Hitachi, Ltd.
- 申请人地址: JP Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JP Tokyo
- 优先权: JP2021-140828 20210831
- 主分类号: G06N5/04
- IPC分类号: G06N5/04 ; G06N20/00
摘要:
Aspects relate to determining the presence or absence of concept drift in seasonal time series data. A concept drift detection device including a data input unit for receiving a time series data set that includes a set of past time series data and a set of current time series data, a baseline model generation unit for generating a baseline model based on a subset of the set of past time series data, a feature extraction unit for extracting a set of past data features, a set of baseline data features, and a set of current data features, a distance calculation unit for calculating a baseline distance and a current distance, and a concept drift detection unit for determining, based on a baseline statistic and the current distance, presence or absence of concept drift between the set of current time series data and the set of past time series data.
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