We present a new class of asymptotically good, linear error-correcting codes based upon expander graphs. These codes have linear time sequential decoding algorithms , logarithmic time parallel decoding algorithms with a linear number of processors, and are simple to understand. We present both randomized and explicit constructions for some of these codes. Experimental results demonstrate the ex...

Mutual information between a target variable and a feature subset is extensively used as a feature subset selection criterion. This work contributes to a more thorough understanding of the evolution of the mutual information as a function of the number of features selected. We describe decreasing returns and increasing returns behavior in sequential forward search and increasing losses and decr...

This paper presents an activity recording (AR) system and a radial-basis-function-network-based (RBFNB) energy expenditure regression algorithm. The AR system includes motion sensors and an electrocardiogram sensor which is composed of a set of sensor modules (accelerometers and electrocardiogram amplifying/filtering circuits), a MCU module (microcontroller), a wireless communication module (a ...

This report presents a formalisation of the IEEE standard for binary floating-point arithmetic in the set-theoretic specification language Z. The formal specification is refined into four sequential components which unpack the operands, perform the arithmetic, pack and round the result. This refinement follows proven rules and so demonstrates a mathematically rigorous method of program developm...

In a mobile computing environment that supports mobile agents, a client can send an agent to visit a sequence of servers in the network. Tracking the' location of agents becomes a critical problem in managing a mobile agent servic~ network. In our previous papers, we had developed a few strategies to search an agent in a sequential search liSt The Extended Binary Search algorithm recursively pr...

In this paper we describe feature selection experiments for on-line handwriting recognition. We performed a sequential forward search through a 25 elements set of on-line and pseudo-off-line features. In our experiments we obtained interesting results. Using a set of only five features, we achieved a performance that is similar that of the reference system that uses all features. The best subse...