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Questions about KPI Ranking

  1. What is “KPI Ranking”?
  2. How is it calculated?
  3. How do ships of same position effect the ranking of others (photo finish)?
  4. When are KPI rankings calculated?
  5. How is ranking visualized?
  6. Would the history of ranking be kept in the system?
  7. Can I see my old KPI ratings?

Answers

  1. What is “KPI Ranking”?

    Ranking is an implicit benchmark where performance is regarded as relative to who I am compared with. Each ship is compared with other ships on the same KPI based on its own ranking criteria, hereby creating a ranking result where each ship is given its rank.


    It can be compared to a race, where the fastest runner is on place 1, the next person on place 2 etc irrespective of the absolute time. Something like a marathon with 100 runners, the first, the second, the third etc. To get a silver medal, it’s not important how fast I was, it only counts that I was behind the first.


  2. How is it calculated?

    To calculate the ranking of an individual ship for particular KPI in a particular quarter, the below steps are followed:


    1. Calculate KPI value based on the KPI formula
    2. Calculate position by comparing the KPI value of the ship with rest KPI values of ships having the same ranking criteria
    3. Calculate ranking as percentage based on a global formula used for all KPIs which considers the total ships participating with the same ranking criteria and the actual position of the ship in this list

    Ranking formula

    In case of calculating KPI rankings of multiple ships i.e of a Business Unit (BU), the system first aggregates PI values (not KPIs) of the ships belonging to the BU and follows the exact same steps.


  3. How do ships of same position effect the ranking of others (photo finish)?

    In a photo finish scenario, the system uses the “Standard competition ranking” approach which compares the KPI values of the participating ships and assign equal ranks to the ships with the same KPI value. Then a gap is left in the ranks. The number of ranks that are left out in this gap is one less than the number of items that compared equal. Equivalently, each item's ranking number is 1 plus the number of ships ranked above it.


    This ranking approach is frequently adopted for competitions, as it means that if two (or more) competitors tie for a position in the ranking, the position of all those ranked below them is unaffected. Thus if ship A ranks ahead of B and C (which compare equal) which are both ranked ahead of D, then ship A gets ranking number 1 ("first"), B gets ranking number 2 ("joint second"), C also gets ranking number 2 ("joint second") and D gets ranking number 4 ("fourth").


    That specific approach was adopted for two reasons:

    • Competitive ships in tie are rewarded with the highest position
    • Ships having bad performance are given the relevant rank within its ranking criteria

  4. When are KPI rankings calculated?

    KPI rankings are calculated in two ways. One the user can manipulate and another one triggered by the system:

    • Every time the user updates a ship i.e alter the data and save
    • Over the night, the system recalculates rankings of all ships in all KPIs

    The first way updates rankings of a particular ship while the second it updates the rankings of all ships in all accounts. Both might have an impact on ships performance assuming that performance data are updated almost on a daily basis.


  5. How is ranking visualized?

    For visualizing in a meaningful way how good or bad individual KPI rankings are, the system uses color coding. Based on the ranking percentage of the ship in a particular KPI the system colors individual KPI blocks as following:

    • Green when ranking is greater than 90%
    • Orange when ranking is between 50% and 90%
    • Red when ranking is below 50%

    If, for any reason, a KPI cannot be calculated then the individual block on My ships page is colored grey.


  6. Would the history of ranking be kept in the system?

    Yes, historic rankings of ships will be kept in the system. The thought here is to introduce the concept of the “Cut-off date” that will be assigned on every calendar year to control changes in the performance data that might affect historic rankings. That concept will be implemented in the next release.

  7. Can I see my old KPI ratings?

    Yes, the option is provided on via my ships page. You have two options:

    • When you are on my ship overview page where you see the list of your ships, when you put your cursor on top of a KPI block, that shows the rating of that ship for that KPI in the selected quarter
    • When you go to the details of the ship where you can see a list of KPIs for that ship, on the top of the page you can see a toggle button called “Show rating”. By default that option is disabled but if you want to see KPI ratings, you just need to enable that option

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