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  "Title": "Continuous Time Autoregressive Models",
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  "Date": "2026-03-17",
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  "Description": "Provides tools for fitting continuous-time autoregressive\n(CAR) and complex CAR (CZAR) models for irregularly sampled\ntime series using an exact Gaussian state-space formulation and\nKalman filtering/smoothing. Implements maximum-likelihood\nestimation with stable parameterizations of characteristic\nroots, model selection via AIC, residual and spectral\ndiagnostics, forecasting and simulation, and extraction of\nfitted state estimates. Methods are described in Wang (2013)\n<doi:10.18637/jss.v053.i05>.",
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