ELO

Rating system

Measure of your ability

relative to the population

1200

1600

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logistic function

WHY ELO

so popular

simplicity and
versatility

not restricted to binary results

multiple-choice questions

partial credit
modeling of answers in the presence of hints

measure of performance
(Time it takes)

Self Correcting

a mechanism for adjusting scores when results are not as expected

Points to Note

  • Rating only makes sense inside the system (the populous)

     
  • Rating inflation or rating deflation

     
  • Never significant jumps/drops
     

Awesome Finds

ELO

By Kartik Arora