Top ten algorithms in data mining (2007) [pdf] | Hacker News.

The discussion below the link is also very good.

If you are curious, here are the 10 algorithms, and the paper is displayed below.

  1. C4.5
  2. k-Means
  3. SVM
  4. Apriori
  5. EM
  6. PageRank
  7. AdaBoost
  8. kNN
  9. Naive Bayes
  10. CART