Brownian motion

stochastic model (see Wiki) serving as basis for IQUO methodology. IQUO uses arithmetic version of Brownian motion with zero drift. Predicted exchange rate is modelled by the formula:

Wt - Ws ~ N(0, t - s), where

• Wt - predicted state,

• Ws - starting point,

• N(0, sigma^2) - normal distribution with zero expected value and variance sigma^2.

This formula is also used for reward calculation for both signals and quotes, with the only difference that the former use challenge while the latter - discrepancy