1) Implied volatility based on the Vanna-Volga model :
VV-Premium = BS-Premium + W_rr * (Smile-RR-Premium - BS-RR-Premium) + W_bf * (Smile-BF-Premium - BS-BF-Premium)
In the above equation, the BS-Premium is typically set using the ATM vol. Therefore, can we have an implied volatility BASED on...