Julie Letchner PhD Candidate University of Washington Paul Allen Center, Office 390 Phone: (206) 890-8733 Email: letchner at cs.washington.edu

• NSF graduate research fellowship (2006-2009)
• Dept. of Defense NDSEG fellowship (2003-2006)
• Google Anita Borg Scholarship (2008-2009)
• ARCS fellowship (2003-2006)
• Siebel Scholars scholarship (2002)

Publications:

• Lahar Demonstration: Warehousing Markovian Streams
  J. Letchner, C. Re, M. Balazinska, M. Philipose
  VLDB 2009
  
• Approximation Trade-Offs in a Markovian Stream Warehouse: An Empirical Study
  J. Letchner, C. Re, M. Balazinska, M. Philipose
  Under submission. Related Tech report
  
• Access Methods for Markovian Streams
  J. Letchner, C. Re, M. Balazinska, M. Philipose
  ICDE 2009 (long paper)
  • Associated tech report (same content)
    
  • Conference talk slides
• Challenges for Event Queries over Markovian Streams
  J. Letchner, C. Re, M. Balazinska, M. Philipose
  IEEE Internet Computing Magazine, Nov/Dec 2008 Special Issue on Data Stream Management (to appear)
• Event Queries on Correlated Probabilistic Streams
  C. Re, J. Letchner, M. Balazinska, D. Suciu
  SIGMOD 2008
• Cascadia: A System for Specifying, Detecting, and Managing RFID Events
  E. Welbourne, N. Khoussainova, J. Letchner, Y. Li, M. Balazinska, G. Borriello, D. Suciu
  MobiSys 2008
  
  • Associated demo paper
• Map Matching With Travel Time Constraints
  J. Krumm, J. Letchner, E. Horvitz
  SAE 2007
  
• Trip Router with Individualized Preferences (TRIP): Incorporating Personalization into Route Planning
  J. Letchner, J. Krumm, E. Horvitz.
  IAAI-2006
  
  • IAAI presentation slides (Quicktime)
    
• Large-Scale Localization from Wireless Signal Strength
  J. Letchner, D. Fox, A. LaMarca
  AAAI-2005
  
  • AAAI talk slides (15 min) (Pack-and-go .ppt)
  • My Quals talk (45 min) on this work. More detailed. (Pack-and-go .ppt)
• Axolotls
  J. Letchner
  Zoo Life Magazine 1991
  

Misc. Presentations

• 5-min overview of my current project: Access Paths for Markovian Streams (Quicktime)


• Intro. to DBN learning for non-AI people. (Quicktime)

(Specifically, this was for a group of urban simulation/policy folks)

Web-friendly course & internship work, in reverse chronological order:

• Mojitos: A Distributed Steganographic File System
  Term project for UW's OS quals course, cse551, taught by Steve Gribble & Ed Lazowska in spring 2004.
  • Accompanying presentation (.ppt)
    
  
  
  
• Robot Localization Using Wireless Ethernet Signal Strength (.ppt)
  Term project for UW's networking quals course, cse561, taught by David Wetherall in autumn 2003.
  
  
• Tools for Energy Minimization Problems in Vision (.ps)
  Written report on my work in the summer of 2003 at NASA Ames. I worked in the K9 Mars rover lab under the guidance of Matt Deans and Larry Edwards.
  • Accompanying Presentation (.ppt)
  
  
  
• Mini Presentation on Mobile Robot Localization (.ppt)
  Miniature 10-minute presentation on mobile robotics given at the end-quarter "symposium" for cs327, Stanford's advanced robotics course. Taught by Oussama Khatib in spring 2003.
  
  
• Formalisation de la Chirurgie (Surgical Formalization) (.ppt)
  Informal presentation on my work in the summer of 2002 at INRIA Sophia-Antipolis (France). I worked on the ChIR surgical robotics team under the guidance of Eve Coste-Maniere. Presentation is in French.
  • Accompanying informal web page
    
  
  
  
• Tree-Based Motion Planning (.doc)
  Term project for Stanford's motion planning course, cs326. Taught by Jean-Claude Latombe in spring 2002. This one is very project-specific and may be difficult to understand without knowledge of the assignment and project.
  
  
• Image Segmentation Through Texture Recognition: A Texton Clustering Approach
  Term project for Stanford's computer vision course, cs223b. Taught by Chris Bregler in winter 2002.
  
  
• Women In Computer Science: The College Experience
  Term project for Stanford's course on computers and society, cs201. Taught by Eric Roberts in winter 2001.