Otto, Philipp; Schmid, Wolfgang - In: Statistical Papers 64 (2022) 5, pp. 1721-1747
, we introduce a novel spatial GARCH process in a unified spatial and spatiotemporal GARCH framework, which also covers all … previously proposed spatial ARCH models, exponential spatial GARCH, and time-series GARCH models. In contrast to previous … spatiotemporal and time series models, this spatial GARCH allows for instantaneous spill-overs across all spatial units. For this …