Perhaps you should try some spelling variations:
"modified dfdamdamdaptive quantization algorithm" » "modified adaptive quantization algorithm", "modified _damdamdaptive quantization algorithm", "modified adamdamdamdaptive quantization algorithm", "modified bi1damdamdaptive quantization algorithm"
"modified df estimation algorithm" » "modified _ estimation algorithm", "modified adam estimation algorithm", "modified bi1 estimation algorithm"

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