It is determined by the changes in price and . The acts as a weighting coefficient at the change of price — the higher the coefficient (the ) is the greater the contribution of the price change (for this period of time) will be in the value of the indicator. The indicator is also known as Accumulation / Distribution Index.
Common known variants of this type of indicator are the , or .
Based on https://www.metatrader5.com/en/terminal/help/indicators/volume_indicators/ad