Cointegrated Solutions of Unit-Root VARs: An Extended Representation Theorem
单位根 VAR 的协整解:扩展表示定理AI 解读 ↓
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单位根 VAR 的协整解:扩展表示定理AI 解读 ↓
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This paper establishes an extended representation theorem for unit-root VARs. A specific algebraic technique is devised to recover stationarity from the solution of the model in the form of a cointegrating transformation. Closed forms of the results of interest are derived for integrated processes up to the 4-th order. An extension to higher-order processes turns out to be within the reach on an induction argument.
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