But the methods of estimation of parameter of the GARCH models, BHHH and GMM, may become invalid because they usually meet the situation that the middle data fluctuate greatly.
而GARCH模型参数估计的主要方法BHHH算法和广义矩方法在实际运算中常遇到中间数据震荡从而导致算法整体失效等。
Data processing time does fluctuate.
数据处理花的时间是波动的。
Data processing time does fluctuate.
数据处理花的时间是波动的。
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