SAS中文论坛
标题:
请问!如何在SAS里进行ARFIMA和FIGARCH的估计?
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作者:
shiyiming
时间:
2004-3-1 19:32
标题:
请问!如何在SAS里进行ARFIMA和FIGARCH的估计?
请问各位老大? <!-- s:shock: --><img src="{SMILIES_PATH}/icon_eek.gif" alt=":shock:" title="Shocked" /><!-- s:shock: --> <!-- s:shock: --><img src="{SMILIES_PATH}/icon_eek.gif" alt=":shock:" title="Shocked" /><!-- s:shock: --> 如何在SAS里进行ARFIMA和FIGARCH的估计?
作者:
shiyiming
时间:
2004-3-3 16:27
标题:
各位高手请指点一二!
请各位高手不吝指教啊! <!-- s:o --><img src="{SMILIES_PATH}/icon_surprised.gif" alt=":o" title="Surprised" /><!-- s:o --> <!-- s:o --><img src="{SMILIES_PATH}/icon_surprised.gif" alt=":o" title="Surprised" /><!-- s:o --> <!-- s:o --><img src="{SMILIES_PATH}/icon_surprised.gif" alt=":o" title="Surprised" /><!-- s:o -->
作者:
shiyiming
时间:
2004-3-16 12:22
don't understand what's ARFIMA and FIGARCH, you can go to <!-- m --><a class="postlink" href="http://v8doc.sas.com/sashtml">http://v8doc.sas.com/sashtml</a><!-- m --> to search them. I tried, but can't find anything. However, you can find sth. about ARIMA or GARCH. then check whether there is the information you want.
作者:
shiyiming
时间:
2004-3-18 10:02
标题:
thank you!
thanks a lot!
作者:
shiyiming
时间:
2004-3-21 15:52
理论上,在SAS中估计分数差分过程,可以用MODEL或NLP模块。但最大的问题在于,SAS中该用什么“符号”来表示滞后算子。
因此,不妨考虑GHP等两阶段估计方法,来估计ARFIMA和FIGARCH。
作者:
shiyiming
时间:
2004-3-22 20:07
标题:
iml模块中可以估计!
iml模块中有现成的函数可以估计!
作者:
shiyiming
时间:
2004-3-25 15:31
hero老兄,是什么函数? <!-- s:o --><img src="{SMILIES_PATH}/icon_surprised.gif" alt=":o" title="Surprised" /><!-- s:o -->
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