Java, JavaEE, C#, VB.NET, Visual Basic, PHP, Computer science related machine learning algorithm, data mining algorithm, information retrieval, In the past, I have developed numerous computer science related project such as various machine learning algorithm including neural network, decision tree,classifier ensemble, various clustering algorithm, recommender system, web mining system, information retrieval system, search engine prototype, and programming language implementation,various optimization method including Genetic Algorithm, Particle Swarm Optimization, Differential Evolution and Fuzzy Logic.I have used various technologies such as Java, JavaEE, JSF, EJB, C#, VB.NET, Visual Basic etc.I am also interest in software design, design pattern and UML.