How Contributors are defined
The Contributor Type (Negative or Positive) is determined based on a Contribution Score. This Contribution Score is calculated every time a user clicks on "Search" on the "Contributors" page. Depending on the filter selection, the logic is run and results are refreshed for the selected period, account, contributor type and article variant(s).
How Contribution Score is calculated
The entire logic is based on comparison of Current Period with Previous Period and on Quantities.
1. Set Period - Once a period is selected (1, 2 or 3 weeks or 1 month), this becomes Period 1 (current period).
Current period will be compared with Previous period (Period 2), which is period with exactly same duration as current period and which was right before the current period.
Period 1 = current period
Period 2 = previous period, same duration as Period 1
E.g. Month October = current period; Month September = previous period
2. Identify Errors - Calculate error for each period (Current and Previous). Error is calculated entirely based on quantities. Order Quantity and GR Quantity (GRs = all goods received on time and in full) are taken into consideration.
Error Formula: Order Qty - GR Qty
Period 1 (current period) --> Error Current: Order Qty - GR Qty
Period 2 (previous period) --> Error Previous: Order Qty - GR Qty
E.g.
P1 (current): Order Qty 120, GR 50 --> Error Current: 70
P2 (previous): Order Qty 100, GR 50 --> Error Previous: 50
3. Calculate Contribution Score - Compare Error Previous (P2) with Error Current (P1) to see what the delivery trend was. Are deliveries improving, or on the contrary, getting worse?
Contribution Score Formula = Error Previous - Error Current
If score is negative (Error Previous < Error Current) --> Negative Contributor
If score is positive (Error Previous > Error Current) --> Positive Contributor
IMPORTANT: Score can sometimes be zero (0):
1. when Ordered Qty = GR Qty
2. when there is no data for one period to be compared with another period: current period vs previous period (the article was not ordered in one of those periods, PDD* will be taken as reference).
*Planned Delivery Date
In both cases, the score is considered zero (0) and the article variants are categorised as Positive Contributors and displayed at the end of the list.
E.g.
P2: 50 articles were not delivered during previous period
P1: currently, non-delivered articles increased to 70
Applying formula Previous - Current: 50 - 70 = -20
This means that we have a negative contributor.
P2: 40 non-delivered articles
P1: 25 non-delivered articles
40 - 25 = 15
We have a positive contributor because non-delivered articles decreased.
