MANAGEMENT OF COMPLEX PHYSICAL SYSTEMS USING TIME SERIES SEGMENTATION TO DETERMINE BEHAVIOR SWITCHING

摘要

Systems and methods for managing one or more physical systems, including determining system behavior switching based on time series data from one or more sensors in the system. Time series is divided into a plurality of segments, and each of the segments represents a system behavior. A fitness model is generated for each of the segments to determine whether to select each of the segments as invariants, and an ensemble of local relationship models are built for each of the time series for each invariant to identify local behavior switching points over time. The identified local behavior switching points of each invariant are aggregated by aligning the local switching points of all invariant segments, computing a density distribution of the aligned switching points, and extracting local maximas of the density distribution to determine the global switching points. System operations are controlled based on the determined system behavior switching.

主权项

1. A method for managing one or more physical systems, comprising:
determining system behavior switching based on time series data from one or more sensors in the system, the determining further comprising:
dividing the time series into a plurality of segments, wherein each of the segments represents a system behavior;generating a model fitness score for each of the plurality of segments to determine whether to select each of the plurality of segments as an invariant;building an ensemble of local relationship models for each of the time series for each invariant to identify local behavior switching points over time;aggregating the identified local behavior switching points of each invariant, the aggregating comprising:
aligning the local switching points of all the invariant segments;computing a density distribution of the aligned local switching points; andextracting local maximas of the density distribution to determine one or more global switching points; and controlling system operation based on the determined system behavior switching.