Interview: John F. Ehlers of MESA by Jayanthi Gopalakrishnan
John Ehlers pioneered the use of the MESA (maximum entropy spectral
analysis) algorithm for measuring market cycles in the early 1980s.
The MESA technique is now acknowledged by leading technical
analysts to be an accurate and effective way of measuring market
cycles. More recently, Ehlers has written about applying advanced
digital signal processing techniques, including Fisher transforms,
Hilbert transforms, and nonlinear filters to technical analysis.
Ehlers, president of MESA Software and a registered CTA, has seen
his software receive 25 Readers’ Choice awards from STOCKS &
COMMODITIES magazine over the years. Currently, MESA Software
develops automatic trading systems that adapt to market conditions.
A Contributing Editor for STOCKS & COMMODITIES, Ehlers has
written several books, including MESA And Trading Market Cycles,
Rocket Science For Traders, and Cybernetic Analysis For Stocks And
Commodities. He is a frequent speaker at conferences and seminars
on the subject of cycles in the markets.
STOCKS & COMMODITIES Editor Jayanthi Gopalakrishnan spoke
with John Ehlers via telephone on October 29, 2003.