Today at midnight (GMT) the submission system is going to close. After that time, you will have two more days (until September 30, 23:59 GMT) for submitting the report.
Since we have noticed that the value of R^2 metric on a relatively small preliminary test set (only 10% of the test set) can be quite unstable, we decided to increase the number of solutions that each team can indicate as their final to three. The final score of each team in this challenge will be the maximum of the three scores obtained by indicated solutions.
Participating teams are not obliged to indicate their final submissions. However, in such a case, for the final evaluation (on the remaining 90% of the test set) we will only use one solution that is associated with the best preliminary score.
What should be in the report file? Code or description of the solution?