not necessarily, consider e.g. https://medium.com/value-stream-design/introducing-one-of-the-best-hacks-in-machine-learning-the-hashing-trick-bf6a9c8af18f https

not necessarily, consider e.g. https://medium.com/value-stream-design/introducing-one-of-the-best-hacks-in-machine-learning-the-hashing-trick-bf6a9c8af18f https://medium.com/value-stream-design/introducing-one-of-th...