Over the past few weeks, we have been trialing a new system for ranking users based on points. After a number of revisions based on suggestions from those enrolled in experimental features, we feel the system is stable enough as-is to make public.
Why a new system?
The old system over-awarded those who spent time "farming" a large number of easy problems, and under-rewarded those who spent time figuring out more complex solutions. The new system hopes to strike a balance in ranking between users who solve many problems, and users who solve fewer — but harder — problems.
How are points calculated?
In short, the new points system takes the weighted sum of the top 100 submission scores on distinct problems. The score of the -th problem is weighted by . Formally, where represents sorted scores and a user's base points,
To not over-penalize users who have dedicated time to solving many problems, an additive adjustment is made to the base point value. Where is the number of problems a user has a fully-accepted solution on,
A user's point score is then the sum .
How can I see a problem's contribution to my points?
A new table has been added to the Problems tab of profile pages, which displays the 100 submissions used in the generation of their point score, as well as their weights.
We invite you to the Mackenzie New Year's Challenge 2017. A 36 hour challenge consisting of 6 problems in varying difficulty. This contest will take place on Saturday Jan 7th 12pm until Sunday Jan 8th midnight.
Winners will be contacted shortly to receive their t-shirt prize. If you are a winner, the email you receive is sent to the email address you registered your DMOJ account with.
If you are from Trudeau and are eligible for a prize, please send an email to [email protected] from the email address you registered your DMOJ account with. Please state your DMOJ username and attach a full image of your 2016-17 student ID card.
Editorials will be uploaded very soon to their respective problem pages!
See you next month!
We're excited to invite you to the fourth Trudeau Logic Evaluation of the 2016-17 school year, and the last TLE of 2016!
Editorials have been uploaded and can be found on respective problem pages.
See you next month!
We're excited to invite you to the third Trudeau Logic Evaluation of the 2016-17 school year!
Anyone with a DMOJ account is welcome to participate and anyone without one is welcome to register and participate.
The TLE November contest will be a 3-hour virtual contest, which will allow contestants to participate in any 3-hour window from 12:00 PM EST to 11:00 PM EST on November 17, 2016. Please see the contest page for more details.
See you soon and we wish for many rating increases!