Perhaps you should try some spelling variations:
parameters optimization » parameter optimization, parameter estimation
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
attributes estimation » attribute optimization
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( attributes estimation algorithms ) OR ( parameters optimization algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (( attributes estimation algorithms ) or ( parameters optimization algorithm ))*.