Part 2 Ehlers Leading Indicator (ELI)
by John Ehlers
Most technical indicators use a moving average of some kind, and this usually dooms the indicator to
lag price. Some indicators use momentum, or rate of change, to generate a leading function. However,
this is similar to taking the derivative of a continuous function, and it results in a very noisy signal. The
noise is usually reduced by smoothing or averaging. This averaging delays the indicator so that, at best, it
runs even with price, without lag or lead.
I have developed a new indicator that provides leading signals when cycles are present in the data. This
indicator uses only exponential moving averages (EMA), which I described and compared to simple
moving averages in Part 1 (see S&C, June 1988). The indicator's parameters may be optimized so you
can use it in a turnkey fashion. If you want to examine these parameters in greater detail, a source listing
in PC BASIC is provided in Figure 5.
I modestly refer to this new indicator as ELI, the Ehlers Leading Indicator.