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We develop a new parameter stability test against the alternative of observation driven generalized autoregressive score dynamics. The new test generalizes the ARCH-LM test of Engle (1982) to settings beyond time-varying volatility and exploits any autocorrelation in the likelihood scores under...
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the framework of dynamic conditional correlation (DCC) models, we find that such breaks occurred both at the time the …
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the implied asset correlations for discrete state switching models are implausibly low compared to correlation estimates …
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