Welcome to my site. My name is Guangming Lang. I’m a data scientist and R programmer. I help businesses solve mission critical problems using advanced data analysis techniques, machine learning algorithms and web technologies. I do it in front of my Mac and over the internet. I love my work.

I live in Ann Arbor, Michigan, which is both vibrant and quiet depending on different times of the year. Its vibrance gives me excitement. Its quietness helps me think and stay productive. I love Ann Arbor.

I also love swimming and reading, which I do regularly if not every day.

I used to love the Argentine tango with all my passion, and I danced and lived a tango life style for 6 years. One day, a near death experience changed my outlook on life. I became very conscious of the fleeting nature of time, and started to develop a strong desire for creating something that can outlive me myself. In tango, you deliver happiness to two people: you and the woman in your embrace. Now, I want to deliver happiness to millions of people. So I quit tango, and began channelling all the passion, creativity and hardwork into building and growing Cabaceo and MasterR. I’m loving it.

If you are a business owner who needs data analysis service or customized data product…

Take a look at our work and get in touch. I’ll personally give you a FREE 30 minutes hearing-your-pain and here-are-the-possible-solutions consulting session.

If you want to become great at R…

Check out the community at MasterR.org where you can get high quality training materials for FREE. You can also check out my books:

  1. ezplot: How to Easily Make ggplot2 Graphics for Data Analysis
  2. Score Personal Loan Applicants using R

Let’s Connect

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