Ye Wen

Ph.D Candidate & Research Assistant
Computer Science Department

University of California, Santa Barbara, CA 93106

Office: Mayhem Lab (Trailer 931)
Phone: (805)893-5212
Email: wenye at cs.ucsb.edu

my book stamp

[Research] [Publications] [Other Projects] [Personal] [Resume]

I'm from Hangzhou, China. I'm currently a Ph.D student in Department of Computer Science, University of California, Santa Barbara. My advisor is Professor Rich Wolski. I'm also working with Professor Chandra Krintz. I previously graduated from Department of Computer Science, Zhejiang University, China. My research interest is mostly about the system issues in embedded systems, including the power-aware computing, the modeling and simulation of embedded systems, etc.

RESEARCH

My current research is about the modeling and simulation of sensor network. I've been working for about 3 years to build a distributed simulation system for heterogeneous sensor network, which currently has aggregately over 30,000 lines of code. The system is now functional and still improving. It includes three independent full-system simulators:

iPAQ simulator (ipaqsim). A full-system simulator for iPAQ (H36xx). It is able to boot original Familiar Linux binary image.
Stargate simulator (starsim). A full-system simulator for Stargate, the XScale-based gateway device for sensor network. It also boots original Linux image from xbow. It also features an XScale pipeline simulator to provide cycle estimation.
Mote simulator (motesim). A full-system, cycle-accurate simulator for Mica2 and MicaZ motes. It runs with original TinyOS binaries.

These simulators are integrated by a distributed simulation framework:

DiSenS. Distributed sensor network simulation framework.

DiSenS utilizes networked cluster machines to simulate hundreds of motes in near real time.

My previous research project was to make battery lifetime prediction for embedded and mobile devices.

Online battery lifetime prediction

My annotated reading list for major area exam.

PUBLICATIONS

Ye Wen, Wei Zhang and Rich Wolski, Simulation-Based Augmented Reality for Sensor Network Development, To appear in The 5th ACM Conference on Embedded Networked Sensor Systems (SenSys 2007), Sydney, Australia, Nov 2007.
Ye Wen, Selim Gurun, Navraj Chohan, Rich Wolski and Chandra Krintz, Accurate and Scalable Simulation of Network of Heterogeneous Sensor Devices, To appear in The Journal of VLSI Signal Processing Systems for Signal, Image, and Video Technology, 2007.
Ye Wen, Rich Wolski and Greg Moore, DiSenS: Scalable Distributed Sensor Network Simulation, In Proceedings of ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming (PPoPP 07), San Jose, Mar 14-17 2007
Ye Wen and Rich Wolski, S²DB: A Novel Simulation-Based Debugger for Sensor Network Applications, In the Proceedings of 6th Annual ACM Conference on Embedded Software (EmSoft 06), Seoul, South Korea, Oct 22-25, 2006
Ye Wen, Selim Gurun, Navraj Chohan, Rich Wolski, and Chandra Krintz, SimGate: Full-System, Cycle-Close Simulation of the Stargate Sensor Network Intermediate Node, In the Proceedings of International Conference on Embedded Computer Systems: Architectures, MOdeling, and Simulation (IC-SAMOS VI), Samos, Greece, July 17-20, 2006
Ye Wen, Rich Wolski, and Chandra Krintz, Online Prediction of Battery Lifetime for Embedded and Mobile Devices, Special Issue on Embedded Systems: Springer-Verlag Heidelberg Lecture Notes in Computer Science, V3164/2004, Dec 2004
Chandra Krintz, Ye Wen, and Rich Wolski, Application-level Prediction of Battery Dissipation, ACM/IEEE International Symposium on Low Power Electronics and Design (ISLPED), August 9-11, 2004, Newport Beach, CA
Ye Wen, Rich Wolski, and Chandra Krintz, History-based, Online, Battery Lifetime Prediction for Embedded and Mobile Devices, Workshop on Power-Aware Computer Systems (PACS), April 2003

OTHER PROJECTS

Open source projects:

Skyeye. I contributed code to this open source simulator for embedded development.

Some course projects:

Discovering motifs in genes (Project of CS290i: Bioinformatics, Spring 2002). This is a small project using Gibbs sampling method to detect the motifs shared by a set of gene sequences. I'm actually implemented the Lawrence's algorithm. But it can only detect one motif at a time. Here is the java code.
Computing Ramsey numbers in Grid environment (Globus) (Project of CS290i: Grid Computing, Winter 2002). The project was supposed to build an application in Grid environment to find Ramsey(6,6). My algorithm can find the counterexample of size 65 within 25 minutes using most of the machines in GSL and CISL. Check the code here. Here is the code using G-Commerce.
An instrusion detection system (Project of CS290i: Security).

Previous research project: Back in China, in Zhejiang University, I worked in the field of 3-D modeling for computer aided design (CAD). I was working on a "3D Feature Based Parametric Product Modeling System for Windows NT/Windows 9X environment. It includes solid modeling, sketching, feature parametric modeling, and advanced surface modeling techniques. The parameter auto-adaptation technique ensures the consistency of all steps from designing to manufacturing, thus all relevancies will be modified automatically on the change of a certain feature." My part is the assembly module whose function is to simulate the assembly process of a machine. Here are some fantastic pictures of our system.
sketch1 sketch2 gearbox1 gearbox2 gearbox3 gearbox4 hangyang wavehand1 wavehand2
Publications:

Min Tang, Ye Wen, Xiaofeng Mi, Jinxiang Dong, Parametric Modeling with User-Defined Features.In Proceedings of the Sixth International Conference on Computer Supported Cooperative Work in Design, July 2001, London, Ontario, Canada.
Ye Wen, Xiaofeng Mi, Min Tang, and Jinxiang Dong. A Unified Representation of User-defined Features. In Proceedings of 3rd International Conference on Computer-Aided Industrial Design and Conceptual Design, Nov.2000, Hongkong.
An Architecture Of Web-Based Distributed CAD System, The Second International Workshop on CAID&CD'99 in Bangkok, Thailand, Nov 26, 1999

PERSONAL

Hobby. I love all the geek stuff: scifi, electronics, robots, linux hacking, etc... I love to build things: coding a software, hack a machine... Currently, I'm learning photography, tennis.
Family. My lovely wife. Yes, we are in the same department. Isn't it fantastic?
Hometown. My beautiful hometown: Hangzhou, China.
Mayhemers! These are the great people I'm working with.