International Journal of Computing Science and Information Technology (IJCSIT)
Data mining is a technique that is used to extract useful knowledge from large amount of data. And classification is most important task of data mining. Now-a-days, in real world stream data is most important source of knowledge. Stream data is data that continuously arrives over the time i.e. growth of data is increasing faster and faster. Traditional classification algorithms are not suitable for such data. Continuous growth of the data makes previously constructed classification tree outdated and it is to be reconstructed from the scratch, which is very time consuming.