Marzia Sultana

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Evaluation of the Hessian matrix of a scalar function is a subproblem in many numerical optimization algorithms. For large-scale problems often the Hessian matrix is sparse and structured, and it is preferable to exploit such information when available. Using symmetry in the second derivative values of the components it is possible to detect the sparsity(More)
Significant advances have been made in Wireless Sensor Networks (WSN)s over the last decade. The advances in wireless communication and electronics have enabled the deployment of low-cost, low-power, multifunctional smart sensor nodes that are small in size and communicate in short distance. Energy-efficiency is one of the major concerns in wireless sensor(More)
In recent years, there has been great interest in graph drawing to express relational information and applications range from CASE tools, reverse engineering, idea organization, and software design. However, as the graphs to be visualized become more and more complex, extended structured graph variations are needed. Clustered graphs are graphs with(More)
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