By Gregory Piatetsky, @kdnuggets, Sep 10, 2014.

This past week I was on vacation, and tweeting a lot less tweets than usual, so here are the most popular for the last 7 days - Sep 3-9.

Most Retweeted:
What Is #BigData? Definitions from 40+ thought leaders, including @DrewConway, @kdnuggets, @SethGrimes, and @hmason t.co/ffvRQoasBF

Most Favorited:
Choosing the right estimator scikit-learn #CheatSheet: classification vs regression vs clustering vs dim. reduction t.co/8Ncd5Wj1yZ

Most viewed:
What Is #BigData? Definitions from 40+ thought leaders, including @DrewConway, @kdnuggets, @SethGrimes, and @hmason t.co/ffvRQoasBF

Most Clicked:
Fewer companies are hiring Data Scientists but #DataScience is still hot t.co/SaZuSBz83V

Top 10 most engaging Tweets

1. What Is #BigData? Definitions from 40+ thought leaders, including @DrewConway, @kdnuggets, @SethGrimes, and @hmason t.co/ffvRQoasBF
2. Fewer companies are hiring Data Scientists but #DataScience is still hot t.co/SaZuSBz83V
3. How do Twitter Analytics show followers gender, when they don't ask? A clever algorithm finds M/F w. 90% accuracy t.co/AT8uOqY5bs
4. How Uber uses #DataScience to predict where its riders want to go #BigData t.co/TKRJjtFkK4
5. Hiring Data Scientists: What to look for? http://t.co/faOaruPFpC
6. Choosing the right estimator scikit-learn #CheatSheet: classification vs regression vs clustering vs dim. reduction t.co/8Ncd5Wj1yZ
7. Most Viewed Data Mining Talks at Videolectures t.co/bFMSZ54Awg
8. Founders of Yahoo! and MySQL Invest in Import.io t.co/6QwntUVrNu
9. 12 #BigData Definitions, compared by @GilPress - What's Yours? t.co/xNDtoYhFuT
10. How the Super-Rich use #DataScience to get even richer - hyper-personalized wealth management for the 1% (or 0.1%) t.co/L64mrTF8br