Perhaps you should try some spelling variations:
parameters optimization » parameter optimization, parameter estimation
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
policy estimation » policy optimization, pose estimation, motion estimation

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: (( modified parameters optimization algorithm ) OR ( modified policy estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (( modified parameters optimization algorithm ) or ( modified policy estimation algorithms ))*.