Donghai Chen

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Aiming at the load imbalance and poor scalability in single-tier Web server clusters, an efficient load balancing approach is proposed for constructing an N-hierarchical (multi-tier) Web server cluster. In each layer, multiple load balancers are set to receive the user requests simultaneously, and different load balancing algorithms are used to construct(More)
In this paper, we design a primal-dual interior-point algorithm for linear optimization. Search directions and proximity function are proposed based on a new kernel function which includes neither growth term nor barrier term. Iteration bounds both for large- and small-update methods are derived, namely, O(nlog(n/ɛ)) and $O(\sqrt n \log (n/\varepsilon ))$ .(More)
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