switch from plot to bar graph
Merge pull request #5 from arjoly/plot-bar

switch from plot to bar graph
Added the bar plot for depth
changed explanation of experiments
wording
Develop intersection approach
typo
Ignore .DS_Store
Re-work decision tree growing on sparse data
wording
wording
wording
Merge pull request #6 from arjoly/sparse-tree

Sparse decision tree induction
Add mapping image
Merge pull request #7 from arjoly/missing-img

Add mapping image
wording
adding ICDE.pdf
Re-work 20 news group experiment
wip
wip