As Zindi grows into a global data science competition platform, it’s important that we regularly revisit the systems and rules we have in place, to make sure Zindi remains your favourite place to solve machine learning challenges.
Based on recent feedback and activity on the platform, we are updating our submissions policy and competition rules. You can read our new rules and competition guidelines at the end of this post.
We are also making longer-term changes to the platform to limit the incidence of cheating and improve the experience the vast majority of you have on the platform. These changes will serve to streamline and professionalise our code review process, eliminate data leaks, and reduce the frequency and impact of cheating on the platform.
Effective immediately, we will be implementing new stricter rules for code submissions. In addition to systematically requesting code from the top 3 submissions, we will now reserve the right to request code from the top 20 users/teams on each leaderboard at the close of each competition. Your code submission must follow the guidelines below:
If submission code does not reproduce your score on the leaderboard, we will drop your rank to your closest submission to the solution actually generated by your code.
If your code does not run you will be removed from the leaderboard. Please make sure your code runs before submitting your solution.
Please take a moment to review the full submission guidelines below.
If an individual or a team is caught cheating, all team members:
Anyone caught cheating a second time will:
We have taken steps to put a more rigorous review process in place for all competitions, but we acknowledge that it is not always feasible or possible for us to determine potential data leaks before the start of a competition.
If a leak is found, the leak will be made public. You can see how to report a leak below. In order to preserve the value of the competition and ensure the final solutions are both valid and useful, Zindi reserves the right to update the train and test set, close or relaunch a challenge in response to a data leak.
If you notice suspicious activity, or find a potential data leak, we urge you to report it immediately. You can report suspected cheating or a data leak by sending an email to email@example.com.
If you suspect another user or a team of cheating or otherwise abusing the platform, kindly provide any supporting evidence you can. Our team will then review this and take the necessary steps to validate and act on the claims made.
We will be reviewing suspicious behaviour during the course of our competitions and may request to see code at any time during a competition. Should we request your code during a competition, you will have 24 hours to submit your code for review, or face disqualification.
Finally, in order to aid transparency, we will be adding the number of submissions for each user/team to the competition leaderboards.
The integrity of the Zindi platform is of utmost importance to us, as it is to you. We are committed to doing everything we can to make sure that legitimate efforts on Zindi are recognised and rewarded fairly while unethical behaviour is sanctioned and strongly discouraged. We’d like to thank everyone on the platform for complying with these rules and making Zindi a safe and welcoming competitive space for data science.
If you are in the top 20 at the time the leaderboard closes, we will email you to request your code. On receipt of email, you will have 48 hours to respond and submit your code following the submission guidelines detailed below.
- All data used
- Output data and where they are stored
- Explanation of features used
- Your solution must include the original data provided by Zindi and validated external data (no processed data)
- All editing of data must be done in a notebook (i.e. not manually in Excel)
- You must use the most recent versions of packages. Custom packages in your submission notebook will not be accepted.
- You may only use tools available to everyone i.e. no paid services or free trials that require a credit card.
Consequences of breaking any rules of the competition or submission guidelines:
Monitoring of submissions
Further updates and rulings of note:
We reserve the right to update these rules at any time.