Lack of experience in some frameworks or libraries does not prevent me from promptly studying and using them in practice. operations research (mathematical programming and optimization problems) and data analysis (Data Mining, Machine Learning) - area of interest, carried out the implementation of the algorithms of these areas, such as algorithms discriminant analysis, factor analysis, the ANN, decision trees C4.5, cluster analysis (k-means, FOREL), familiar with other methods of machine learning. From the optimization algorithms implemented branch and bound, the dynamic programming method, genetic algorithm, simplex method ... My articles: - Dynamic lot size model: http://eureka-operationresearch.blogspot.com/2011/09/dynamic-lot-size-model.html - Эвристика в составлении расписания занятий: http://habrahabr.ru/post/148717/