In Wireless Local Area Network, wireless node will suffer due to the hidden terminal node. This hidden terminal node leads to high collision, high drop rate of packets and high delay. To avoid this hidden terminal node, wireless nodes use the control messages to know the status of the destination nodes. Another issue in the WLAN is less coverage range with lesser number of nodes. To increase th...

Matching Pursuit decomposes a signal into a linear expansion of functions selected from a redundant dictionary, isolating the signal structures that are coherent with respect to a given dictionary. In this paper we focus on the Matching Pursuit representation of the displaced frame difference (dfd). In particular, we introduce a new dictionary for Matching Pursuit that efficiently exploits the ...

This paper investigates the use of stemming for classification of Dutch (email) texts. We introduce a stemmer, which combines dictionary lookup (implemented efficiently as a finite state automaton) with a rule-based backup strategy and show that it outperforms the Dutch Porter stemmer in terms of accuracy, while not being substantially slower. For text classification, the most important propert...

The most common method used for user security is textual passwords. But they are vulnerable to eves dropping, dictionary attack, shoulder surfing etc. To address this problem, text can be combined with colors to generate session passwords called hybrid textual authentication for authentication in multi – cloud. Provable data possession is a technique for ensuring data integrity. We present a co...

Dictionary learning algorithms for audio modeling typically learn a dictionary such that each time frame of the given sound source is approximately equal to a linear combination of the dictionary elements. Since audio is non-stationary data, learning a single dictionary to explain all time frames of the sound source might not be the best modeling strategy. We therefore recently proposed a techn...

To successfully apply evolutionary algorithms to the solution of increasingly complex problems we must develop effective techniques for evolving solutions in the form of interacting coadapted subcomponents. In this paper we present an architecture which involves cooperative coevolution of two subcomponents: a genetic program and an evolution strategy. As main difference with work previously don...

We study a simple pursuit scenario in which the pursuer has potential access to an additional off-board global sensor. However, the global sensor can be used for either of two purposes: to improve the state estimate of the pursuer, or to obtain more data about the trajectory being tracked. The problem is to determine the variation in the performance of the system as the global sensor changes it...