Yeah, I like that. Or fractional_ratio. With part_ratio tho I'm still not sure which part... (the lesser or greater than 1) part. But I like it because it's shorter. Frac_ratio feels like cheating a bit.

But I guess a number that's always between 0 and 1 is an integer reciprocal. But again that's probably getting too deep for this.

I guess another way is UnitIntervalPoint or ProperFraction

I guess in Java we don't have to choose

FractionalPartRatioForAccuracyNormalized hehehe

I suppose we could make up a word

bition, or bitum

anabit or cobit - analog bit (continuous on 0 to 1)

proratio - proper ratio

Making up a word seems easier than the rest because it's more concise. :)