Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithm, optimized algorithms
estimation algorithms » estimation algorithm, optimisation algorithm, approximation algorithms
parameter estimation » parameter estimates, parameter optimization
poses optimization » qoe optimization, policy optimization, robust optimization

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: (( parameter estimation algorithms ) OR ( poses optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (( parameter estimation algorithms ) or ( poses optimization algorithms ))*.