Editing Machine Learning Meetup Notes:2011-4-13
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Anthony Goldbloom from Kaggle Visits | Anthony Goldbloom from Kaggle Visits | ||
*Guy used random forests to win HIV competition. Word "random forests" is trademarked. Dude taught himself machine learning from watching youtube videos. Random forests are pretty robust to new data. | *Guy used random forests to win HIV competition. Word "random forests" is trademarked. Dude taught himself machine learning from watching youtube videos. Random forests are pretty robust to new data. | ||
**Used [http://cran.r-project.org/web/packages/caret/ caret] package in R to deal with random forests. | **Used [http://cran.r-project.org/web/packages/caret/ caret] package in R to deal with random forests. | ||
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*Performance bottoms out in competitions within a few weeks in general. This seems to be due to all the information being "squeezed" out of the dataset at that point. | *Performance bottoms out in competitions within a few weeks in general. This seems to be due to all the information being "squeezed" out of the dataset at that point. | ||
*Chess rating competition: build a new rating system that more accurately produces the results. The performance still plateaued, but took longer. | *Chess rating competition: build a new rating system that more accurately produces the results. The performance still plateaued, but took longer. | ||