1. UWM Multimedia Software Lab Ethan Munson Dept. of EECS UW-Milwaukee

2. Laboratory Goals zStudy and create novel software to support better multimedia authoring and browsing tools yStyle sheets ySoftware environments using hypermedia yMultimedia document analysis zEmphasis on language-based solutions yDocument specification languages yStyle sheet languages

3. Laboratory Funding zGrant from NSF CAREER program ysupports one PhD, one MS student zSubcontract from Center for Adaptive Data- Driven Information Processing (U. Maryland, Baltimore County) ySupports one undergraduate student yPossibly others zVarious equipment and software donations ySun, Macromedia, Eaton

4. Laboratory Facilities zLaboratory space: 46 m 2, open format zComputing facilities ySun E250 file server (2 Sparcs, 80 GB RAID, Solaris, AFS) ySun Ultra 10 (4), SGI Indigo 2 (2), HP 715 (2) yWintel, G3 Mac yDigital video, camcorder, scanner, printers

5. Laboratory Entrance

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9. Projects zSoftware Concordance zCADIP research yWeb image search yUsability of information visualization zUser tolerance for GUI delays

10. Software Concordance zGoal: Improve software development process with hypermedia services zBuilding Java source-code editor that supports embedded hyper-links and multimedia yIntegrated parsing and version control yLinks defined manually yXML for non-source-code documents zWill build analysis and visualization tools

11. Software Concordance zCurrent status: building editor using yFluid program analysis suite (CMU/UWM) yChimera hypermedia toolkit (Colorado) yKaomi multimedia authoring toolkit (INRIA/Opera) ?? zTien Nhut Nguyen (PhD student) yHypermedia infrastructure zSatish Chandra Gupta (MS student) ySource code editor yInterface with Fluid

12. Retrieving Web Images zMS thesis by Yelena Tsymbalenko zUse HTML metadata (HTML source) to identify images relevant to one-word text query yno image downloading or processing required zInitial results yHigh precision for some simple forms of metadata yStructural clues not effective yPossible methodologic problems zCurrent status: need student

13. Information Visualization Usability zMany visualization techniques for IR data have been proposed yStereoscopic Field Analyzer (SFA) is one xrequires 3D goggles and 2-hand magnetic tracking controls zGoal: test usability of SFA on realistic data sets yThese systems have high “face validity”, but little rigorous testing zCurrent status: beginning research now yNicholas Bohne (undergraduate)

14. User Perception of GUI Latency zGoal: understand how fast a GUI must be to make users happy yIs “as fast as possible” necessary or even correct? zFirst study instrumented MS Word to control delay yWeak results due to bad methodology ySubject’s words don’t match their survey results xvideotape may have been a problem

15. Current Latency Study zWhat is minimum delay that a user can perceive for each GUI task (menu, button, typing)? yCommon wisdom: 100ms zInitial results: 140-180ms zScientific issues yTurns out to be difficult to study xSubjects have trouble determining whether delay occurred yDoes perceptible delay vary with task? xSome evidence, but methodologic problems make result uncertain

16. Future Latency Research zImprove experimental technique zMeasure full probability distribution yLong, boring testing with small number of subjects zTest more GUI tasks yto try to find task differences zMove to studying user preference, rather than perception

17. Other topics zFormal models of hypermedia and hypermedia design yTwo MS theses, possible collaboration with Brazilian researchers