Automatic hamming distance selection

[JoeyAndres]

SDM needs a no-arg constructor in which the hamming distance is estimated base on the "rule of thumb"

Activated location should not exceed the square root of the total number of memory locations.

[JoeyAndres]

Throw a compile/run-time warning if hamming ddistance is more than the value above.

[JoeyAndres]

This proved to be hard. The distribution of hamming distance in space N is simply not ideal. It's hard to imagine using this with big address, especially with the property that as n in 2^n grows, the bell curve gets skinnier and are within the mean.

[JoeyAndres]

See n-gram