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Learning Deep Input-Output Stable Dynamics

NeurIPS 2022 · Time series › Causal and generative time series · approach: Dynamical system reconstruction · 2 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use the Hamilton-Jacobi projection to enforce input-output stabilityNeural dynamics on the glucose-insulin benchmark · Glucose-insulin benchmark testRMSE: 0.0103 -> 0.0050Helped
Use the Hamilton-Jacobi projection to enforce input-output stabilityNeural dynamics on the glucose-insulin benchmark · Unexpected step inputs, magnitudes 2 to 10bounded output behaviorHelped
Add the Hamilton-Jacobi loss term to DIOS-fgh (ablation)Bistable benchmark, DIOS-fgh · Bistable modelrobust estimation of stable pointsHelped
Use vanilla neural networks instead of the stability-constrained methodNeural dynamics on the bistable benchmark · Bistable modelidentification of two stable pointsHurt
Increase the bistable training dataset sizeCompared methods · Bistable model, 100, 1000, and 3000 signalsRMSEHelped
Use vanilla neural networks rather than input-output stability-aware trainingNeural dynamics on the bistable benchmark · Bistable modelGainIO errorHurt
Use a piece-wise ARX model instead of the proposed methodBistable benchmark · Bistable modelGainIO errorHurt
Use DIOS-fgh, which modifies f, G, and hBistable benchmark · Bistable modelGainIO errorHelped
Use DIOS-f, which modifies only fBistable benchmark · Bistable modelGainIO errorHelped
Use DIOS-fg, which modifies f and GBistable benchmark · Bistable modelGainIO errorHelped
Disable stop-gradient for the projection (ablation)Proposed method · Bistable and glucose-insulin benchmarksperformanceHurt
Add the Hamilton-Jacobi loss term (ablation)Nominal dynamics in the proposed method · Trainingparameter learningHelped

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