The wireless communication nature of remotely deployed sensor nodes make the attacks more easily to be happened in wireless sensor networks (WSNs). But traditional security algorithms are infeasible in WSNs due to the limited computing, communication power, storage, band width and energy of sensor nodes. So energy efficient secure data aggregation schemes are necessary in resource constrained W...

Over the years capability of the mobile sensing devices like smart phones are increased in terms of capturing and sharing the information. This information can be useful if analyzed as an aggregated value or values. Classic examples are like traffic trend in particular area, medical information in particular locality etc. When such information is shared to an aggregator, user’s identity should ...

The Bouillon project has an objective of building universal P2P aggregation platform employing social links and user reputations to exchange end-user’s evaluations for massive parallel collaborative filtering of digital content. Currently, the project is in stage of public testing, available at http://bouillon.math.usu.ru.

Feed syndication is analogous to electronic newsletters, both are aimed at delivering feeds to subscribers; the difference is that while newsletter subscription requires e-mail and exposed you to spam and security challenges, feed syndication ensures that you only get what you requested for. This paper reports a review on the state of the art of feed aggregation technology and the development o...

In this paper we present RELEVANTNews, a web feed reader that automatically groups news related to the same topic published in different newspapers in different days. The tool is based on RELEVANT, a previously developed tool, which computes the “relevant values”, i.e. a subset of the values of a string attribute. Clustering the titles of the news feeds selected by the user, it is possible iden...

Metadata aggregation is a task increasingly encountered in many projects involving data repositories. The small number of specialized software for this task indicates that in most cases customized software is used to perform aggregation, which in turn relates to the highly complex tasks and architectures involved. In this paper, the metadata and object repository aggregator (MORe) is presented,...

Financial institutions see the Internet as an important channel and many have built websites to inform and attract customers. Financial aggregation services as represented by “Account Aggregator” present an opportunity by which financial institutions can build stronger relationships with customers. Account aggregation services began in the United States, but they are now widely used by financia...

Sensor networks generate enormous amounts of redundant sensing data. Data aggregation techniques are required to gather and aggregate these sensor data, by which the aggregator nodes forward to the base station only the aggregate results. When a Cluster-based Wireless Sensor Network (CWSN) is deployed in an unattended environment, the sensor nodes and aggregators become highly vulnerable to var...

In wireless sensor networking applications, gathering sensed information and relaying it to the sink node using multi-hop communication in an energy efficient manner is of paramount importance. In this paper we present the idea of using Aggregator Nodes in order to decrease the amount of packets sent, hence reducing the energy required for communication. We introduce DDAP, a self-organizing Dis...

—This paper investigates the problem of proportionally fair double-sided energy auction involving buying and selling agents. The grid is assumed to be operating under islanded mode. A distributed auction algorithm that can be implemented by an aggregator, as well as a possible approach by which the agents may approximate price anticipation is considered. Equilibrium conditions arising due to pr...