Rules clarification

One of the rules of the challenge was understood by some participants in a more restrictive manner than we intended. We updated the Rules page to make things more clear.

The new formulation of the rule in question is:

The data downloaded from this website must primarily be used for preparing an entry to be submitted to this challenge. The data may not be used for other purposes in scientific studies and may not be used to train or develop other algorithms, including but not limited to algorithms used in commercial products, without prior participation in this challenge;

The old formulation was:

Data downloaded from this site may only be used for the purpose of preparing an entry to be submitted on this site. The data may not be used for other purposes in scientific studies and may not be used to train or develop other algorithms, including but not limited to algorithms used in commercial products;