MooMaster wrote:
> Now we can't calculate a meaningful Euclidean distance for something
> like "Iris-setosa" and "Iris-versicolor" unless we use string-edit
> distance or something overly complicated, so instead we'll use a
> simple quantization scheme of enumerating the set of values within the
> column domain and replacing the strings with numbers (i.e. Iris-setosa
> = 1, iris-versicolor=2).
I'd calculate the distance as
def string_dist(x, y, weight=1):
return weight * (x == y)
You don't get a high resolution in that dimension, but you don't introduce
an element of randomness, either.
Peter
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