Analysis of Data Streams

One of the four Vs of Big data is 'velocity' which refers to the fact that in many applications, data is not static but continuously flows into the system (often at a very high rate). Such continuously flowing data is termed as Streaming data and is generated by various sources such as surveillance cameras, sensors in machines such as aircraft engines, tractors, vehicles and mobile phones, atmospheric systems, mass production systems, transactions such as those of a credit card system etc. In some applications such as credit card fraud detection, intrusion detection or preventive maintenance it is important that we are able to analyse the data stream in real time.