ts_mean((close - open) / (high - low + 0.001), 20)
-ts_rank(ts_decay_linear(volume, 10), 30)
ts_rank(adv20 - volume, 15) + ts_rank(volume, 15)
ts_mean(high - ts_delay(high, 1), 60) - ts_mean(low - ts_delay(low, 1), 60)