Understanding Quadratic Optimization Solver in R

I promise to write technical stuff in my blog in a more popular way, just like Olav Laudy. But I have to take my promise. This problem has been bugging me and pushed me to write it for my documentation. I have been trying to solve some problem using optimization in R, especially the quadratic …

Digit Recognizer using Logistic Regression

For who is not familiar with kaggle (www.kaggle.com), kaggle is a platform that publish competition in data science and optimization. The competition mostly come from a company that want an outside talent analyze the data, or promote its software product (case from Matlab).  It has been run for several years and the prize for the …