less sketchy
Post on 12-Jul-2015
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LessSketchy
by Shih-Ho Cheng
Many posts seem to be great deals ...
Many posts seem to be great deals ...
Cheap! Great LocationNo Credit Check
... but many are really scams!
... but many are really scams!
How can I prevent this?
Where to get training set? Step 1
Just wait... Step 2
Step 3: Re-visit each post
99% Legit
1% scams
How to train the model?
Random Forest
~1% / ~99% k1
k2
kn
Average
Decision
~1% / ~99%
~1% / ~99%
Balanced Random Forest
50% / 50% k1
k2
kn
Average
Decision
50% / 50%
50% / 50%
About Shih-Ho Cheng
B.S. Physics / Math Univ. of Virginia
Ph.D. Astro-Particle PhysicsPenn State Univ.
Love board games!
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