黃寶儀 Polly Huang 　
 
　
國立台灣大學電機工程學系 助理教授
Assistant Professor, Department of Electrical Engineering, National Taiwan University
　

主要研究領域: 電腦網路, 網路模式建構與模擬

Major Research Areas: Computer Networks, Network Modeling and Simulation
　
 
研究領域摘要

黃寶儀教授曾參與的研究計畫相當多樣，包括網際網路的特徵分析、網路模擬、和多重傳播路由協定設計。這些經驗逐漸發展成她目前對網路模式建構、模擬、及效能分析的興趣。更詳細一點說，黃教授的研究主要承襲了下列的脈絡：
  • 尋找合適的理論來分析出網際網路各方面的特性
  • 建立合適的模組並利用在高效能的網路模擬上
  • 結合所發現的網路特徵及高效能網路模擬的技術並應用在網際網路協定及相關設計的效能評估上
  • 進一步了解新一代網路協定將對現今網際網路各分面特徵的影響

以網際網路的流量研究為例，黃教授及其研究夥伴發現TCP中所謂的closed-loop控制機制在網際網路的流量特徵上扮演著重要的角色。這樣的發現衍生出一個有限狀態機型式的TCP模型。這個模型由於保存了TCP裡極關鍵的closed-loop控制機制，所以能夠將網際網路上流量的特徵原始地模擬出來。並且應用於網路模擬上時可以節省記憶體的使用量進而提升網路模擬的效能。結合這個TCP模型及其在網路模擬上的應用，黃教授的團隊更進一步發現早期TCP-friendly協定在設計上的問題。

 
Research Summary

Professor Huang has participated in a wide range of research projects, including Internet characterization, network simulation, and multicast routing protocol design. These experiences have nurtured her interest in modeling, simulation, and performance issues of the Internet in general. To be specific, the theme of her research has been:

  • identifying appropriate mathematical techniques to characterize aspects of the Internet,

  • constructing efficient simulation models that capture critical characteristics,

  • applying the known models and simulation techniques to analyze and evaluate protocol design in a realistic Internet-like context, and

  • understanding the implications of newly improved protocols to the characteristics of the Internet.

Take Internet traffic for instance, she and her collaborators have identified that TCP’s closed-loop control plays a critical role in traffic characteristics. That has led to a finite-state model of TCP that preserves the closed-loop control mechanism. Applied to network simulations, the model is capable of generating realistic traffic with low memory usage. With the model and its simulation implementation, Prof. Huang’s team is able to show, with limited computing resource, some problems in earlier designs of TCP-friendly congestion control.
  		　  
　
  • BS: Math, National Taiwan University, 1993
  • MS: CS, University of Southern California, 1997
  • PhD: CS, University of Southern California, 1999
  • Address: Room 315, 
                    Department of Electrical Engineering,
                    National Taiwan University,
                    Taipei, Taiwan, 106
  • Phone: +886-2-2363-5251 ext. 315
  • Fax: +886-2-2367-1909
  • E-mail: phuang@cc.ee.ntu.edu.tw
  • Personal Homepage: http://cc.ee.ntu.edu.tw/~phuang
 
主要著作 Selected Publications

  1. Lee Breslau; Deborah Estrin; Kevin Fall; Sally Floyd; John Heidemann; Ahmed Helmy; Polly Huang; Steven McCanne; Kannan Varadhan; Ya Xu; Haobo Yu; The VINT Project, Advances in Network Simulation, IEEE Computer, Vol. 33, No. 5, pp. 59-67, May 2000

  2. Danica Vukadinovic; Polly Huang; Thomas Erlebach, On the Spectrum and Structure of Internet Topology Graphs, In the proceedings of the Innovative Internet Computing Systems (I2CS 2002), June 2002

  3. Anja Feldmann; Anna C. Gilbert; Polly Huang; Walter Willinger, Dynamics of IP traffic: A study of the role of variability and the impact of control, In the Proceeding of SIGCOMM '99, Cambridge, Massachusetts, September 1999

  4. Polly Huang; John Heidemann, Minimizing Routing State for Light-weight Network Simulation, In the Proceeding of the Ninth International Symposium on Modeling, Analysis and Simulation on Computer and Telecommunication Systems (MASCOTS 2001), August 2001

  5. Polly Huang; John Heidemann, Capturing TCP Burstiness in Light-weight Simulations, In the Proceeding of the Communication Networks and Distributed Systems modeling and Simulation Conference (CNDS 2001), January 2001

  
 

Publication List