KDD Competition 2010
We're interested in working on the KDD Competition, as a way to focus our machine learning exploration -- and maybe even finding some interesting aspects to the data! If you're interested, drop us a note, show up at a weekly Machine Learning meeting, and we'll use this space to keep track of our ideas.
- Machine Learning
- KDD Rules and Data Format
- R language
- List of other competitions in which we could engage
- Mahout -- machine learning libraries for Hadoop
- So-so intro to Pig Video
- An AWESOME intro to Pig on Elastic Map Reduce!
- Pig language
- Pig Latin Manual
- Cloudera -- see videos for Hadoop intro
- Vikram's awesome Hadoop/EC2 scripts
- Our mailing list
- Importing data into Sqlite for SQL'ing the data
- Visualizing Sqlite data in Omniscope for understanding the data
- Chance mapping dataset for Vikram's EC2 presentation
- For KDD submission: to zip the submission file on OSX: use command line, otherwise will complain about __MACOSX file: e.g.: zip asdf.zip algebra_2008_2009_submission.txt
- We will need to make sure we don't get disqualified for people belonging to multiple teams! Do not sign up anybody else for the competition without asking first.
- Add new features by computing their values from existing columns -- e.g. correlation between skills based on their co-occurence within problems. Could use Decision tree to define boundaries between e.g. new "good student, medium student, bad student" feature
- Dimensionality reduction -- transform into numerical values appropriate for consumption by SVM
Who we are
- Andy; Machine Learning
- Thomas; Statistics
- Erin; Maths
- Vikram; Hadoop
(insert your name/contact info/expertise here)
How to run Weka (quick 'n very dirty tutorial)
- Download and install Weka
- Get your KDD data & preprocess your data:
this command takes 1000 lines from the given training data set and converts it into .csv file attention, in the last sed command you need to replace the long whitespace with a tab. In OSX terminal, you do that by pressing CONTROL+V and then tab. (Copying and pasting the command below won't work, since it interprets the whitespace as spaces)
head -n 1000 algebra_2006_2007_train.txt | sed -e 's/[",]/ /g' | sed 's/ /,/g' > algebra_2006_2007_train_1kFormatted.csv
- The following screencast shows you how to do these steps:
- In Weka's Explorer, remove some unwanted attributes (I leave this up to your judgment), inspect the dataset.
- Then you can run a ML algorithm over it, e.g. Neural Networks to predict the student performance.
A more step-by-step weka example
How to run libSVM
- See the notes at Machine Learning/SVM
How to run MOA
- See the notes at Machine Learning/moa