Actually, both CRC and MD5 can be calculated incrementally without having to stringify the entire dataset at once. That's what the MD5 context object is for. I don't know of a CRC module that provides that functionality, but it's easy to implement.

But yeah, coming up with a function that has the "nonrandom" behavior you're looking for is going to be very tricky and data-dependent.

In reply to Re^3: An optimal solution to finding weights for a weighted sum signature. by Anonymous Monk
in thread An optimal solution to finding weights for a weighted sum signature. by BrowserUk

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