Perhaps you should try some spelling variations:
"modified stochastic optimization algorithms" » "modified stochastic optimisation algorithm", "modified stochastic estimation algorithms", "modified stochastic estimation algorithm", "modified stochastic optimisation algorithms", "modified stochastic estimation algorithmss"
"modified quadratic optimization algorithm" » "modified static optimization algorithm", "modified quadratic optimisation algorithm", "modified quadratic estimation algorithm", "modified quadratic estimation algorithms"

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