Download - 1 普及計算 Embedded Interactive Systems (Pervasive & Ubiquitous Computing) Hao Chu ( 朱浩華 ) 2/20/2006
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普及計算Embedded Interactive Systems
(Pervasive & Ubiquitous Computing)
Hao Chu ( 朱浩華 )2/20/2006
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Outline
• Faculty Intro• Student Intro• What is Pervasive / Ubiquitous Computing?• Course Topics• Course Format• Course Projects• Grading
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Faculty Intro
• Ubicomp Lab, i-space Labs• Education:
– PhD (1999), Computer Science, UIUC– BS (1994), Computer Science, Cornell
• Previous Work Experience: – Xerox, Intel, NTT DoCoMo USA Labs
• Married with a 3.5Y daughter• Hobbits: reading, traveling, movies, sports (skiing, swi
mming, golfing, etc) • Personality: friendly, easy-going, happy, perfectionist,
quiet, careless, forgetful, changeable
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Students Intro
• Please tell us about:– Current (future) research area, interests, &
faculty advisor– Background
• Software programming skills (C/C++, Java)• Hardware skills• Networking• User Interface• Vision• Interdisciplinary• English (presentation, reading, and writing)
– Why are you interested in this course?
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What are computers for?
calculations vs. communications
getting a computing job done vs. communicating information
(capture, process, transmit, interaction)
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Ubiquitous Computing Vision
Provide (natural) access & interaction of digital information for humans in the physical world
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Ubicomp Defined• What is pervasive & ubiquitous computing (ubi
comp)?– Ubiquitous = 到處存在的 ; 遍在的– Other names: everyday computing, context-aware
computing, invisible computing, ambient intelligence, embedded interactive computing, etc.
• How to realize ubicomp?– One approach: embed computing (sensing, networ
king, and processing) into everyday objects.
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Toward Smart Everyday Objects
• Wall can sense temperature, humidity, lighting, and adjust air conditioning, de-humidifier, lighting accordingly.
• Calendar can tell you meeting schedule.
• Pencils can record everything you write.
• Book shelf can tell you the location of the book/paper you need.
• Shoes can tell you where you have walked to.
• Refrigerator can offer dinner recipes and dietary recommendation.
• Clothes can show the latest fashion or monitor your physical/mental health.
• Medicine cabinet can remind you when to take medicines.
• Dresser can give you fashion advices.
• Washing machines and dryers adjust to washing & drying instructions on dirty clothes.
• Credit card will warn if you are spending too much money.
• Smart chair, smart dining table, etc.
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Smart Objects (I)
• Posture Chair (MIT)• Bionic Running Shoes
(Adidas)• Tasting Spoon (MIT)• Emotional Décor
(NYU)• Moving Portrait (MIT)
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Smart Objects (II)
• History table cloth (EU Equator)
• Key Table (EU Equator)• Counter Intelligence
(MIT)• Smart mirror (Candy &
Candy)
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Ubicomp is the Future …
• “The (Computing) World is not a desktop!” ... Mark Weiser
• “The PC today is an obedient, powerful, but unaware and narrow-minded beast confined within a box.” … Jane Hsu
• Ubicomp is about “Moving beyond Desktop Computing’ – Unleash the power of computing outside of the black box– Break boundary between digital and physical world
• How?– in everyday activities – invisibly through embedding in the physical objects
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Evolution Path of Ubicomp
• How does Ubicomp come about? (the evolution path)– Distributed systems (PC + networks)
• Challenges: performance, scalability, reliability, networking …
– Mobile computing (Mobile devices + wireless networks)
• Challenges: resource limitation, unpredictable network, power saving, …
– Ubiquitous computing (Everyday objects + wireless networks)
• Challenges: user experience & human computer interaction, understanding user intention & context, heterogeneous ubicomp environments, …
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Course Topics (Tentative)
• Vision • Smart objects• Localization systems • Ambient and tangible interfaces• Security and privacy• Smart environments• (Persuasive computing)
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Course Objectives
• To prepare us (students and faculty) for research in ubicomp.
• (Try to) duplicate experience from similar courses taught at MIT, Stanford, Georgia Tech, etc.– Learning by reading papers
• Define problems & challenges• Understand state-of-art techniques & solutions• Identify limitations of state-of-art solutions
– Learning by doing projects• The project must have a research component.
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What can you get out of this course?
{In addition to ubicomp concepts and projects}
• Develop your own belief on where computer science is going
• Learn research experiences– Scenario, problem definition, related work survey, design & i
mplementation, evaluation, etc.– Reading, writing, and presentation skills
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Collaborative Learning
• This is a research seminar course, so everyone (faculty and students) will contribute to the learning process.– Paper discussion– Paper presentation– Project presentation
• Ubicomp is a new, fast changing field, so faculty may not know all materials!
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(Unusual) Course Format
• Each lecture will discuss 3~5 papers on a specific topic.
• For each paper, – All will write a paper review before the class– Faculty & presenters will pose questions before the start
of the class– Presenter will give an overview of the paper for 15
minutes.– Everyone will join the discussion for 15 minutes.
• Students will sign up for papers for presentation.
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How to read a paper?
• For each paper, try to answer the following questions:– What is the problem?– What is the current state-of-the-art?– What is the key make-a-difference (new)
method and technique?– What is good/bad/ugly about this make-a-
difference method? – What has actually been done?– What is the future work?
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Reading in Depth
• Must challenge what you read!• Attack the paper (use your common sense)
– Are assumptions reasonable?– Is the method similar to other methods in
related work?– Is the improvement marginal or significant?– Are arguments logically sound? – Are evaluation metrics reasonable?– Is conclusion drawn logically from
measurements?
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Develop Critical Thinking
• Critical thinking is "the examination and testing of suggested solutions to see whether they will work." Lindzey, Hall, and Thompson, 1978.
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WiKi Page• There a WiKi website (collaborative website).
– The assigned presenter must post presentation slides and paper summary on swifi course page before the class.
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Reading Sources
• ACM Ubicomp (2002 ~ 2005)• Pervasive (2002 ~ 2005)• IEEE Percom (2002 ~ 2005)• ACM CHI (~ 2005)• IEEE Pervasive Computing Magazine• ACM Mobisys, ACM Mobicom, ACM Mobihoc, ACM Sens
ys, SOSP, etc.• Can also be in any system & networking conferences,
UI conferences, etc.
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Project Component
• Rapid research prototype of an ubicomp application in one semester.
• Push you to do some research• Find a fit with your current research• Learn some team work
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Lifecycle of a Research Project
• Define motivation scenario (Tell an interesting story)– Emphasize the parts of scen
ario where it is currently not possible, but with your idea, it will become possible.
– Show me a proof-of-concept demo prototype
• Derive problem(s)– Assumptions, requirements,
implementation vs. research problems
• Survey related work
• Design – Differentiate your work
from related work– What’s new? Why is it
significant?
• Rapid prototype implementation
• Evaluation of Prototype Implementation– Define evaluation metrics– Experiments & user
studies
• Shoot a video & write a report
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Project Phases
• Phase 1: project idea presentation (4 weeks)– Fun, realizable within one semester time framework and
computing equipments, has a research component.– [Scenario]
• Phase 2: project proposal document (4 weeks)– Form teams, define goals, plan, and needed equipments.– [Problems, related work, and design]
• Phase 3: progress checkpoint (4 weeks)– [Preliminary prototype, evaluation metrics]
• Phase 4: project working prototype and final report (4 weeks)– Working prototype demonstration
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Last Year’s Project Samples
• Diet-aware dining table– Smart table aware of what you eat
• Geta sandals– Smart shoes aware of where you walk to
• Privacy camera– Smart camera aware of accidental passers
• Adaptive Wi-Fi localization
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Diet-Aware Dining Table
• Aware of human dietary behaviors over a tabletop surface
• Embed a dietary tracker inside a dining table– Weight and RFID sensors hidden und
erneath table surface– Track what & how much we eat
• Demonstrate ubicomp concepts– Invisible computing– Natural interaction with computers
Table that watches what you eat and helps you eat healthy
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Geta Sandals• Aware of human walking moti
ons & derive his/her current location
• Embed a location self-tracker inside shoes– Pressure, ultrasonic, orientation,
and RFID sensors• Demonstrate ubicomp concep
t– Human-centric design
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Privacy Cameras
• Aware of accidental passers• Embed a passer-tracker insi
de cameras– Ultrasonic Location systems– Check if passers are in camera
view– Inform passers to move– Photo-montage
• Demonstrate ubicomp concept– Privacy in a world full of came
ras
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Adaptive Wi-Fi Location Systems
• Quick overview on WiFi based location system (fingerprinting)– Calibration phase: RSSI radio
maps– Estimation phase: matching
closest points on radio maps
• Aware of environmental factors through sensors– humidity, open/closed doors, and
people
• Contribution– Improvement on positioning
accuracy
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Project Ideas
• Smart object(s): embed computing, e.g., using Telos sensor node(s), to create collaborative, smart everyday objects (e.g., wall, dresser, medicine cabinet, book shelf, etc.). These smart embedded objects can support "natural user interaction" with users.
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More Project Ideas
• Persuasive objects: smart objects not only aware of human behavior but also change or shape human behavior.
• Persuasive lunch tray:– An interactive game -
coloring cartoon character, is used to improve dietary behaviors of young children.
• Smart dresser that not monitor a person's clothing preference, but can improve his/her fashion sense
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More Project Ideas
• Energy-aware indoor localization: come up a way to reduce the amount of energy consumption on a mobile unit in a localization system.
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More Project Ideas
• Ambient display or tangible UI– Use Phidgets (physical UI widgets) to build ambient
display or tangible user interfaces. • Examples from U. of Calgary
– (http://grouplab.cpsc.ucalgary.ca/phidgets/gallery/index.html)
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More Project Ideas
• Ubicomp games: create a game that is played both in the digital and physical world
• Example: – Can you see me now? (Equator)
• Few ubicomp game workshops– Ubicomp 2005: http://ubicomp.techk
wondo.com/index.php/Main_Page
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More Project Ideas
• Social computing– Apply computing to help your everyday social lives
(physical world)• Find your dream girls/boys?• Facilitate face-to-face interactions?• Social networking?
• Check out ambient intelligent group (MIT media lab) – http://interact.media.mit.edu/research.html
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More Project Ideas
• Pollution monitor • Monitor your exposure to pollutants
– Toxic Air– Acid rain– Toxic drinking water– Food chemical or bacteria– Environmental radiation (SUN)– Radiation cell phones & WLAN
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More Project Ideas
• Smart Kitchen• Interactive Recipes• Everywhere Display
– Smart refrigerator– Smart chopsticks– Smart robes– Smart pads
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Ubicomp Toys I• Telos Berkeley Motes• Nokia and Windows CE Smart p
hones• HP IPAQ 5500 (Bluetooth + 802.
11)• IPAQ Accessories: expansion pa
ck, camera, memory card, GPS, GPRS, ..
• Sensors: light, tilt, temperature, accelerometer, pressure, weight, orientation, ultrasound, etc.
• Philgets RFID kits
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Ubicomp Toys II• Passive RFID tags & readers (Skyetek and Alien)• Biometric sensors (heart rate, BVP, GSR, etc.)• Projector• WiFi based location systems (ekahau.com)• Ultrasound-based positioning systems (Navinotesd)• Use your imagination
– Anything you can find on the network or from your own lab …
– However, budget may be limited
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Grading
• Class Participation (30%)– Paper presentation– Paper review – Paper discussion
• Project (70%)
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Course Requirements
• Class attendance (MUST!)– Please don’t register if you cannot wake up in the
morning.
• Creativity • Good programming skill• Some systems & networking background• Willing to spend extra time & efforts than what a
regular course would need• M1 and undergrads (not my students), please
come & talk with me after the class.
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Course WiKi page
http://mll.csie.ntu.edu.tw/ubicomp06/
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Who are still interested in this course?
<Collect Students’ Email Addresses>
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Next week
• Read the next week papers– Mark Weiser, The Computer for the 21th Century, (1991) [Ha
o]– Mark Weiser, Some computer science issues in ubiquitous co
mputing (1993) [Peggy]– Winograd, T., From computing machinery to interaction desig
n (1997) [Kinda]– Mark Weiser, John S. Brown, The Coming Age of Calm Techno
logy, (1996) [Peter]• Learn how to use WiKi• Create/link your personal page under WhoIsWho06 pa
ge