Perhaps you should try some spelling variations:
"modified parameters estimation algorithmss" » "modified parameters estimation algorithm", "modified parameters optimization algorithms", "modified parameters estimation algorithms", "modified parameters optimization algorithmss", "modified parameters optimisation algorithms", "modified parameter estimation algorithmss", "modified parameter estimates algorithmss", "modified parameter optimization algorithmss"
"modified quantile estimation algorithms" » "modified quantile estimation algorithm", "modified quantile optimization algorithms", "modified quantile optimisation algorithm", "modified adaptive estimation algorithms"

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