[Numpy-discussion] Broadcasting rules (Ticket 76).
ndarray at mac.com
Wed Apr 26 16:16:07 CDT 2006
On 4/26/06, Sasha <ndarray at mac.com> wrote:
> On 4/26/06, Bill Baxter <wbaxter at gmail.com> wrote:
> > Is that a representative example? It seems highly unlikely that in real
> > life every one of the schools would have exactly 20 classes, and each of
> > those exactly 30 students.
> You should not take my toy example too seriousely. However, with
> support for missing values, 3-d arrays may provide an efficient
> representation for a more realistic scenario when you only know upper
> bounds for the number of students/classes. Smaller schools will have
> missing values in their arrays.
In addition, it is reasonable to sample a fixed number of classes from
each school and a fixed number of students from each class at random
for a statistical study.
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