Accumulation Swing Index指标被Welles Wilder,Jr.发明的与在他写的“技术交易系统的新概念”书中被描述的。本指标是波动的简单指数;它的体系很像金融资产的价格改变。
SI(i)=50*(CLOSE(i-1)-CLOSE(i)+0,5*(CLOSE(i-1)-OPEN(i-1))+0,25*(CLOSE(i)-OPEN(i))/R)*(K/T)
ASI(i) = ASI(i-1) + SI(i)
SI (i) - 是Swing Index技术指标的目前数值;
SI (i - 1) - 是Swing Index技术指标的以前柱状上的数值;
CLOSE (i) - 当前收盘价;
CLOSE (i - 1) - 以前的当前收盘价;
OPEN (i) - 当前开盘价;
OPEN (i - 1) - 以前的开盘价;
R - 这个参数的计算公式基于今天收盘价和昨天最高价和最低价的比值;
K - 两个中最大的数值: (HIGH (i - 1) - CLOSE (i)) и (LOW (i - 1) - CLOSE (i));
T - 交易时段时最大允许的价格变化;
ASI (i) - Accumulation Swing Index指标的目前数值。
Welles Wilder在他“技术交易系统的新概念”书中给ASI指标下面的描述:”ASI位于同样的日线图上的时候指标上画的趋势可以和图表的同样线被相比的。如果您知道如何画趋势的有效线,那就ASI可以成为很好的工具为证实趋势线的交叉。趋势线的错误交叉在图表上不要用适当线被证实的。因为ASI基本上使用收盘价,在白天期间内的上下突变不要对指标指数发生很大的消极影响”。
Accumulation Swing Index也很好如果同时使用SMA(50)指标为信号线。ASI和SMA线的向上下辐辏点是先进的交易信号,它们指点按照发展的趋势方向的输入范围,而在指标向相反的方向交叉信号线情况下它们也指点退出范围。
T = 300.0
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