• Publications
  • Influence
Fleet-sizing and service availability for a vehicle rental system via closed queueing networks
TLDR
In this paper, we address the problem of determining the optimal fleet size for vehicle rental company and derive analytical results for its relationship to vehicle availability at each rental station in the company's network of locations. Expand
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A smart hill-climbing algorithm for application server configuration
TLDR
The overwhelming success of the Web as a mechanism for facilitating information retrieval and for conducting business transactions has ledto an increase in the deployment of complex enterprise applications. Expand
  • 143
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Clock synchronization algorithms for network measurements
  • Li Zhang, Z. Liu, C. Xia
  • Computer Science
  • Proceedings.Twenty-First Annual Joint Conference…
  • 7 November 2002
TLDR
We propose several algorithms to estimate and remove the relative clock skews from delay measurements based on the computation of convex hulls, which can greatly improve the accuracy of the measurements, and can be used both online and offline. Expand
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Distributed Operator Placement and Data Caching in Large-Scale Sensor Networks
TLDR
We propose distributed algorithms to solve the problem of placing both operators and intermediate data objects inside the network for a set of queries so as to minimize the total cost. Expand
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DOT: a matrix model for analyzing, optimizing and deploying software for big data analytics in distributed systems
TLDR
We develop a general model that abstracts critical computation and communication behavior and computation-communication interactions for big data analytics in a scalable and fault-tolerant manner. Expand
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EMS: Encoded Multipath Streaming for real-time live streaming applications
TLDR
We develop an analytical model and use asymptotic analysis to derive closed-form, optimal load splitting solutions, which are surprisingly simple yet insightful. Expand
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A hidden semi-Markov model for web workload self-similarity
TLDR
We propose a HSMM for modeling Web workloads that asymptotically characterizes second order self-similar workloads when some duration distributions of hidden states are heavy-tailed. Expand
  • 36
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Distributed source coding in dense sensor networks
TLDR
We study the problem of the reconstruction of a Gaussian field defined in [0,1] using N sensors deployed at regular intervals. Expand
  • 35
  • 6
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Threshold-based priority policies for parallel-server systems with affinity scheduling
TLDR
We study the dynamic scheduling of multiclass parallel-server stochastic networks and propose a general class of threshold-based priority policies. Expand
  • 56
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Joint Congestion Control and Routing Optimization: An Efficient Second-Order Distributed Approach
TLDR
We propose a new second-order joint congestion control and routing framework based on a primal-dual interior-point approach that offers utility-optimality, queue-stability, fast convergence, and low delay. Expand
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