EMA cross optimization

If only trading from the long side and using daily bars the optimal parameters for an EMA crossover system on the S&P are Slow=330 Fast =90 Source: http://www.seykota.com/tribe/TSP/EA/index.htm.

What are the optimal parameters for 5 min bars, going both long and short?

If the answer is significantly different from 330/90, does that imply that the market is not truly fractal in nature?
 
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