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I found an algorithm that might generate 'alpha' from alphalens, how would I increase that? Many thanks

hi,
I found the 10-days ic of this algorithm is close to 0.10 and I cross validated this with different date periods. So I wonder should I shift the alpha value to 10days before in order to see that 1-day ic is closing to 0.10, or is there any suggestions to increase the ic value?
Best