Oracle International Corporation

Steven T Jeffreys

Kenny C Gross

Alan Paul Wood

Guang Chao Wang

Avishkar Misra

Mengying Li

Coleen L MacMillan

Lawrence L Fumagalli, Jr

The disclosed embodiments relate to a system that compactly stores time-series sensor signals. During operation, the system receives original time-series signals comprising sequences of observations obtained from sensors in a monitored system. Next, the system formulizes the original time-series sensor signals to produce a set of equations, which can be used to generate synthetic time-series signals having the same correlation structure and the same stochastic properties as the original time-series signals. Finally, the system stores the formulized time-series sensor signals in place of the original time-series sensor signals.

Formulizing time-series sensor data to facilitate compact storage and eliminate personally identifiable information

The disclosed embodiments relate to a system that facilitates development of machine-learning techniques to perform prognostic-surveillance operations on time-series data from a monitored system, such as a power plant and associated power-distribution system. During operation, the system receives original time-series signals comprising sequences of observations obtained from sensors in the monitored system. Next, the system decomposes the original time-series signals into deterministic and stochastic components. The system then uses the deterministic and stochastic components to produce synthetic time-series signals, which are statistically indistinguishable from the original time-series signals. Finally, the system enables a developer to use the synthetic time-series signals to develop machine-learning (ML) techniques to perform prognostic-surveillance operations on subsequently received time-series signals from the monitored system.

Synthesizing high-fidelity time-series sensor signals to facilitate machine-learning innovations

Growing community of inventors

Boxborough, MA, United States of America

Steven T Jeffreys