Answer (1 of 3): I'll try to describe some of the ideas here. Matrix factorization techniques and ensemble methods are perhaps the algorithms most often discussed in connection with the Netflix Prize, but a lot of other insights were used as well. (Note: I'm skipping over many things and the act...
![Is there any summary of top models for the Netflix prize? What are the high level and intuitive ideas behind the winning models that were...](https://cdn-ak-scissors.b.st-hatena.com/image/square/0254a35f9fba5c3353d62b7e014d0aa594f4cc4e/height=288;version=1;width=512/https%3A%2F%2Fqph.cf2.quoracdn.net%2Fmain-custom-t-980-600x315-sqxxospfciejqkjfytssmfbdcvzbbxla.jpeg)