Predictive Modeling competitions, once the arena for a few data mining conferences, has now become big business. Kaggle (kaggle.com) is perhaps the most well-known forum for modeling competitions, using a crowd-sourcing mentality: if more people try to solve a problem, the likelihood that someone will create an excellent solution to that problem increases. The participants, and there have been 10s of thousands of participants since their 2011 beginning, sometimes have no predictive modeling background and sometimes an extensive data science background. Some very clever algorithms and solutions have been developed with, on some occasions, ground-breaking results One conclusion
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