I'd be very interested in your feedback, once you have completed the test.
For preparation, I'd go play with Kaggle if I were you; and read their forum.
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What were the questions like?
Is is like Kaggle: they give you a csv, and you build a predictor? I guess they would expect some feature engineering from you as well.
Do they want a dissertation around how it could function inside their firm? How you would talk about it to the client? What are the maintenance hurdles?
