Bachelier Model: Fast Accurate Implied Volatility
“An industrial solution” – provides computation to near machine precision for option prices over an extremely large range! Fast and analytic in nature, employs rational polynomials to determine implied BpVol. Follows the Bachelier model; that is, dF = σdW. A new method for computing implied BP Vol (basis point volatility) analytically has come to light. It is described by […]
Exploring Seasonality in a Time Series with R’s ggplot2
Inflation index values are decomposed into trend, seasonality and noise. Certain types of graph help identify seasonality. Graphs can be created simply and quickly in R. Simple graphs can be refined for stronger visual impact. Recently, I have been looking at inflation indices and studying their seasonality. The best way to see the overall trend and seasonality in this […]