CASD model and ARCH model is what model?? Why baidu search less than, the two models is to explain what? I don't know how to categorize, a great god answer!!
CodePudding user response:
Can search, but what does it mean, look not to understand 1. Cross sectional absolute deviation of return (CSAD) 2. The ARCH model (Autoregressive conditional heteroskedasticity model) ARCH model by the university of California, San Diego, professor Robert engel (Engle) in "econometric" magazine in 1982 (Econometrica) is put forward for the first time in a paper, then get rapid development in the field of econometrics, the so-called ARCH model, in accordance with the English translation is Autoregressive conditional heteroscedastic model, roughly speaking, the model will be the all available information as a condition, and the variation of some form of regression is used to depict the variance, for a time series, can use the information at different times, different variance and the corresponding condition is different also, by using the ARCH model, to characterize the time variation of conditional variances,