In this paper we describe the information-gathering problem which can be characterized as transforming large amounts of data obtained from sensors into accurate, concise, timely and meaningful information that can be used by decision makers faced with a specific task and a number of options for performing that task. The approach to this information-gathering problem as described here consists o...

Although wireless sensor networks (WSNs) are powerful in monitoring physical events, the data collected from a WSN are almost always incomplete if the surveyed physical event spreads over a wide area. The reason for this incompleteness is twofold: i) insufficient network coverage and ii) data aggregation for energy saving. Whereas the existing recovery schemes only tackle the second aspect, we ...

The power of wireless sensor network techonology has provided the capability of developing large scale systems for real-time monitoring.This paper describes the evolution of a wireless sensor network system for landslide detection in the Idukki district of the southern state of Kerala, India, a region known for its heavy rainfall, steep slopes, and frequent landslides. The deployment and data r...

Data aggregation is a widely used technique in wireless sensor networks. The security issues, data confidentiality and integrity, in data aggregation become vital when the sensor network is deployed in a hostile environment. There have been many related work proposed to address these security issues. In this paper, we introduce the concept of mobile agents for secure data aggregation in sensor ...

Identity disclosure is one of the most serious privacy concerns in today’s information age. A well-know method, called k-anonymity, has recently been proposed and used to protect identity disclosure. The k-anonymity approach, however, still allows a data intruder to discern the confidential information in the anonymized data. To overcome this problem, we propose a data reconstruction approach, ...

A wireless sensor network has a wide application domain which is expanding everyday and they have been deployed pertaining to their application area. An application independent approach is yet to come to terms with the ongoing exploitation of the WSNs. In this paper we propose a decentralized lifetime maximizing tree for application independent data aggregation scheme using the clustering for d...

Principles of separable aggregation of multichannel (multisource) data sets by parallel layers of formal neurons are considered in the paper. Each data set contains such feature vectors which represent objects assigned to one of a few categories.The term multichannel data sets means that each single object is characterised by data obtained through different information channels and represented ...