Ensemble methods. Fast to train, fast to use. Get you results. May not get you answers. So, like neural networks but you don’t need a server farm.

Jeremy kun: Why Boosting Doesn’t Overfit:

Boosting, which we covered in gruesome detail previously, has a natural measure of complexity represented by the number of rounds you run the algorithm for. Each round adds one additional “weak learner” weighted vote. So running for a thousand rounds gives a vote of a thousand weak learners. Despite this, boosting doesn’t overfit on many datasets. In fact, and this is a shocking fact, researchers observed that Boosting would hit zero training error, they kept running it for more rounds, and the generalization error kept going down! It seemed like the complexity could grow arbitrarily without penalty. […] this phenomenon is a fact about voting schemes, not boosting in particular.

## Randoms trees, forests, jungles

- Awesome Random Forests
- how to do mmachine vision using random forests brought to you by the folks behind Kinect.

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