Uncle hoe basically answered it, but I want to emphasize:
Most of these new algorithms use machine learning. That means they feed a machine data, and it produces thousands of totally random algorithms and selects the best one. Rinse and repeat.
The people creating the test keep feeding it data and computation until they like the results. The data IS the algorithm.
The algorithm can end up being human-unreadable, basically a black box.
But somewhere in that algorithm, in a completely incomprehensible chunk of code, it decides that its masters really love it when it fires people who buy shampoo for kinky hair.
Uncle hoe basically answered it, but I want to emphasize:
Most of these new algorithms use machine learning. That means they feed a machine data, and it produces thousands of totally random algorithms and selects the best one. Rinse and repeat.
The people creating the test keep feeding it data and computation until they like the results. The data IS the algorithm.
The algorithm can end up being human-unreadable, basically a black box.
But somewhere in that algorithm, in a completely incomprehensible chunk of code, it decides that its masters really love it when it fires people who buy shampoo for kinky hair.