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The classical algorithm ISOMAP can find the intrinsic low-dimensional structures hidden in high-dimensional data uniformly distributed on or around a single manifold, but if the data are sampled from multi-class, each of which corresponds to an independent manifold, and clusters formed by data points belonging to each class are separated away, several disconnected neighborhood graphs will form, which...
In order to maximize the network lifetime for target coverage, we propose a distributed optimum coverage algorithm for point target in wireless sensor networks. In this paper, we first present a 1-hop local target coverage problem, next analyze the critical restraint of this problem and introduced the definition of key target, then designed an energy utility function, last established an adaptive...
A new method for monitoring two levels of interface of oil-water and oil layer is proposed in this paper. The method aims to estimate the two levels of oil and water in single tank. Different from popular way, a sensor with a simple structure from parallel-plate capacitor has been developed. One electrode of the sensor has been divided into two parts from diagonal line by a small crack. According...
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