Replaced the inner dot product with numpy einsum.
This though slows it down from 8.5 s to 13 s. This is only as an intermediate step, how to figure to dot product inner parts of the big matrix.
Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.
Authored by: tlinnet 2014-06-19
Parent: [r24162]
Child: [r24164]
