ABSTRACT
A wireless sensor network (WSN) is a special kind of a peer-to-peer network where the nodes communicate with the sink wirelessly to transmit the sensed information. In contemporary world, a WSN utilizes different technological advancements in low power communications and very large scale integration to support functionalities of sensing, processing, and communications. A WSNs is often followed by an application that uses sensed observations to perform a certain task. The challenging aspect of data cleaning in WSN is that the cleaning mechanism is online; that is, the cleaning process is carried out for continuous stream of data generated. The major difference between TOAD and the other data cleaning systems is that of verifying the strength of correlation and the measure of the node’s ability to send the clean data uniformly. Arbitration component avoids the possible conflicts between the readings from different sensing nodes that are physically close to one another and sensing the same attribute.
