normalisation
1. <data processing> A transformation applied uniformly to each element
in a set of data so that the set has some specific statistical property. For
example, monthly measurements of the rainfall in London might be normalised by
dividing each one by the total for the year to give a profile of rainfall
throughout the year.
2. <programming> Representation of a floating-point number so that its
mantissa's left-most digit is non-zero. If the leftmost fraction digit are
zeros, the number is said to be unnormalised. Unnormalised numbers are
normalised by shifting the fraction left, one digit at a time, until the
leftmost digit is nonzero and reducing the exponent by the number of shifts.
3. <database> database normalisation.
(1998-04-15)
Nearby terms:
norm « normal distribution « normal form « normalisation
» normalised » normal order reduction » normed space
