Tainted Data Can Teach Algorithms the Wrong Lessons Researchers show how AI programs can be sabotaged by even subtle tweaks to the data used to train them. Illustration: Elena Lacey; Getty Images ...

Most medical algorithms are trained on data collected in New York, California, and Massachusetts. That might skew they’re accuracy if they’re used in other places, researchers suggest.

So, an algorithm is the process a computer uses to transform input data into output data. A simple concept, and yet every piece of technology that you touch involves many algorithms.