This is part 1 of 11 in the system named Ninetales you can find on Tradingview.
It simply measures all of the combinations of the defined parameters of a typical RSI, and returns the most logically accurate values.
Use it however you would use a standard RSI, just add your preferred values to test against each other, and set the period you would like for it to backtest.
リリースノート
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Updated logic better tracks results of value combinations.