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Re^4: Algorithm inspiration required.

by BrowserUk (Patriarch)
on Jun 19, 2018 at 19:32 UTC ( [id://1216962]=note: print w/replies, xml ) Need Help??


in reply to Re^3: Algorithm inspiration required.
in thread Algorithm inspiration required.

I see check summing works quite well. I had expected more false positives because different sequences can lead to the same checksum.

The algorithm is probably being flattered by my test data -- 16-bit random values. Although I am seeing a few false positives, it doesn't take long to verify them using a value-by-value comparison of a relatively small (currently 100, but that's flexible) number of actual values. With 100 x 16-bit numbers, there are huge number of possibilties (1e65536), so finding a repeat of those 100 is a pretty strong indicator of having found the start of the next repeat.

I realise with bio data, especially if its just ACGT, you'd need use a much longer tell-tale sequence to avoid many false positives.


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