Comment by young_rutabaga

This paper is a hilarious dump of WQ's randomly generated formulas that (hopefully) happen to pass in-sample test.

  Alpha#33: rank((-1 * ((1 - (open / close))^1)))

This formula trivially reduces to

  rank(open/close - 1)

which is an example of a mean-reversion strategy. But: 1) nobody bothered to simplify this formula, 2) as any mean reversion, it is extremely difficult to trade.