In many fields

data stream continues to grow in terms of generation speed

scale and vibration

which makes the data stream mining more difficult.RCSW is used in data stream mining to finish data steam sampling.The three concept such as real-time

T

key time point set

data stream processing ratio are proposed.Then an algorithm for data stream speed anomaly detection is proposed

which monitor and predict flow velocity.The system intelligently adjust ring buffer and data stream processing ratio if there is excessive flow velocity

in order to solve the conflicts commendably between data processing power and flow velocity

throughput and limited memory.Experimental results show that it is an algorithm for data stream speed anomaly detection which can ensure normal execution of

data stream mining and well meet the need of the system real-time.