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In this paper, we construct a novel control using LS-SVM matrix operator to achieve the stablization of wheeled under-actuated manipulators. Further, the relative degree of the regulated output is assumed to be known enabling the system is feedback linearizable. By Lyapunov's direct method, it is shown that the tracking error can be controlled in a small neighborhood of zero. The methodology is applicable...
The balance and motion control based on LS-SVM (least squares support vector machine) are considered for mobile wheeled inverted pendulums (WIP), in the presence of parametric and functional dynamics uncertainties. Based on Lyapunov synthesis, the proposed control mechanisms use the advantage of LS-SVM combined with on-line parameters estimation strategy in order to have an efficient approximation...
Node clone attack, that is, the attempt by an adversary to add one or more nodes to the network by cloning captured nodes, imposes a severe threat to wireless sensor networks. Several distributed detection protocols have been proposed against this attack. However, all of them rely on too strong assumptions and cannot be efficiently applied to most of sensor networks. In this paper, we propose an innovative...
Freehand sketching is used widely in human's everyday life for expressing some ideas, especially in notebooks, PDAs and mobile phones. Therefore, the understanding of a sketched picture is the major problem in these devices. One of the most fundamental steps is converting the original digitized pen strokes in the sketch into the intended geometric objects using vertex detection and approximation....
Existing chatbot knowledge bases are mostly hand-constructed, which is time consuming and difficult to adapt to new domains. Automatic chatbot knowledge acquisition method from online forums is presented in this paper. It includes a classification model based on rough set, and the theory of ensemble learning is combined to make a decision. Given a forum, multiple rough set classifiers are constructed...
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