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贴一个Wealth-lab处理跨周期引用的3种方法:
我前面提供的算法并不是这3种算法之一,而是在第一种的基础上做了完善!更接近于真实情况!
When testing a trading system using compressed data in a more granular time frame
(i.e., expanded), it's clear from these illustrations that either Option #1 or #3 must be
selected. The difference in the first (default) and third options is one of a self-imposed
delay. In other words, if you were to run an end-of-day Scan with Option #1 on Friday
(after the close), you could generate trading signals for Monday's open based on the
current week's data. In contrast, with Option #3, this data would not be available until
Monday night's Scan. Either method is acceptable and which one you choose depends on
your methodologies.
If Option #2 were selected, you would incorrectly be using data only available at a later
time in actual trading, as you can verify in the illustration above. Nevertheless, you may
wish to see the data using the second convention for charting purposes, or to create
some sort of idealized trading system. For these reasons it is available for your
discretional use.
[ 本帖最后由 nopain 于 2007-8-26 17:27 编辑 ] |
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