Embedding spaces of time series foundation models make mean shifts, variance changes, and trends linearly detectable, but detection degrades smoothly with shift strength and shows model-specific failure modes.
B.5 WHYTHESETSFMS? We selected these models for three primary reasons
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Non-Stationarity in the Embedding Space of Time Series Foundation Models
Embedding spaces of time series foundation models make mean shifts, variance changes, and trends linearly detectable, but detection degrades smoothly with shift strength and shows model-specific failure modes.