1. Greedy function approximation: a gradient boosting machine;Friedman,2001
2. Geyer, C. J. (2003). Generalized linear models in R. http://www.stat.umn.edu/geyer/5931/mle/glm.pdf.
3. Hong, T., Pinson, P., & Fan, S. (2013). Global energy forecasting competition 2012. In GEFCom 2013.
4. Ridgeway, G. (2013). gbm: generalized boosted regression models. arxiv:cran.r-project.org/package=gbm.