A Locally Most Mean Powerful Based Score Test for ARCH and GARCH Regression Disturbances
ARCH 与 GARCH 回归扰动的局部最大平均功效得分检验
This paper considers testing for autoregressive conditional heteroskedasticity and generalized autoregressive conditional heteroskedasticity disturbances in the linear regression model. These testing problems are one-sided in nature; a fact ignored by the Lagrange multiplier test. A test that exploits this one-sided aspect is constructed based on the sum of the scores. The size and power properties of two versions of this test under normal and leptokurtic disturbances are…