1. The International Symposium on Wearable Computers Mark the dates... Submissione due: April 7 2013 (papers, notes, or posters) Conference: September 9-12, 2013...and follow us, like us, plus us...www.iswc.net

2. ` The 12th International Conference on Mobile and Ubiquitous Multimedia Mark the dates... Submission due : Aug 17 (Short and Full Paper), Oct 14 (Posters/Demos) Conference: Dec 9–12...and follow us, like us, plus us...www.mum2013.org

3. Ulf Blanke Wearable Computing Lab - ETH Zürich Dagstuhl, 3-7 Dec 2012 Human Activity Recognition...

4. 2001-2006 M.Sc. computer science, TU Darmstadt 2007-2010 Ph.D., TU Darmstadt „ Recognizing Complex Human Activity Based on Activity Spotting“ with Prof. Bernt Schiele 2011 Researcher, Max Planck Institut für Informatik, SB Computer Vision and Multimodal Computing 2011-2012 Senior Researcher at AGT International (R&D Division) Headquarter: Switzerland, Sales und R&D: Berlin/Darmstadt Worldwide operations in safety and security solutions for urban management Dec 2012 Researcher, Wearable Computing Lab, ETH Zürich

5. What I have been doing time continuous data Recognizing composite activities by decomposition into isolated activity events Wearable motion sensors Daily routines, maintenance, or construction tasks http://www.ulfblanke.de/research/activity-recognition.html

6. Other projects Place recognition http://www.ulfblanke.de/research/localization.html

7. Other projects Location recognition Sleep studies

8. Other projects Location recognition Sleep studies Improving the kinect Improving Kinect’s depth camera http://www.ulfblanke.de/research/kinect.html

10. Main challenges for the activity recognition research (as a process) 1.„Under“-validated vision 2.Missing conceptualization of activity

11. Real world problem 1. „Under“-validated vision

12. Do we know the value of activity recognition? – We assume (healthcare, industrial tasks...) – We should validate more with (end!) users  Did we make progress with respect to our vision?

13. Example: Activities of Daily Living (ADL) Definition given So far some of top level ADL are well recognized Often subset of activities selected – Only 3 to 4 out of 6 top-level categories addressed – Different activities across different papers ADL aim also at assessing quality of activities performed Did we solve any real world problem by recognizing ADLs? Transcript …though given a precise description of ADL, problem statements remain unsharp, as consequence of inconsistent choice of activities (e.g., one author: brushing teeth, another: showering) and the uncertainty of how solutions impact the application (e.g., quality assessment not addressed, but important for application). Consequently, it’s difficult to evaluate solution proposals to the state of the art… Transcript …though given a precise description of ADL, problem statements remain unsharp, as consequence of inconsistent choice of activities (e.g., one author: brushing teeth, another: showering) and the uncertainty of how solutions impact the application (e.g., quality assessment not addressed, but important for application). Consequently, it’s difficult to evaluate solution proposals to the state of the art…

14. State of the art Proposal of solution Research Cycle Clear problem definition Analysis Transcript 1.Problem definitions are not clear enough 2.Analysis often limited, disallowing deriving new problems. (e.g., good results are emphasized, bad results are hidden  what’s left to improve then) To get the point, let’s look at Activities of Daily Living… Transcript 1.Problem definitions are not clear enough 2.Analysis often limited, disallowing deriving new problems. (e.g., good results are emphasized, bad results are hidden  what’s left to improve then) To get the point, let’s look at Activities of Daily Living… 1. 2. Rosy picture unclear Hard to evaluate

15. Yes, technical challenges have to be adressed But: Our real challenge is the vision/application  To get beyond a technical artifact  To prepare innovation, impact to society  identify new topics for research  justification for research (for selection of activities)

16. Excursion: Lean Start up „not about asking what customers wants but testing the original vision based on what customers do” „having an original vision and then refining and testing it along the way through tightly controlled experiments“

17. Some Lean Startup principles Driven by a compelling vision, and rigorously testing each element of this vision. Vision & motivation is backed up with data The Lean Startup applies to all companies that face uncertainty about what customers will want.....

18. Main challenges for the activity recognition research (as a process) 1.„Under“-validated motivation 2.Missing conceptualization of activity

19. What is an activity? Activity Theory (A. N. Leont’ev 1978)* (1)Structure of activity J. Zacks (2001), (Bobick 1997), (Ampft 2007)... (2)Object orientedness (Philipose 2004; Buettner 2009)... (3)Internalization and externalization (Craik, 1967) „mental model“ (4)Mediation (Gibson 1977, Norman 1988) (5)Development No formal and sufficient explanation for activity in activity recognition research (Recall discussion) *c.f. (Vygotsky, 1978), (Engestro ̈m, 1987) or (Rubinstein, 1957)

20. Discussion Our frontier is not technology but vision/application! – Look for use cases – Don‘t rely on intuition: validate with users: test the vision. – Activity Recognition + HCI as a field? Is a theoretical concept important? – Standardizing effect? – Problem definition easier?