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Implicit Human Computer Ineraction Through Context

Implicit Human Computer Ineraction Through Context. Albrecht Schmidt Telecooperation Office(TecO),University of Karlsruhe,Karlsruhe,Germany

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Implicit Human Computer Ineraction Through Context

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  1. Implicit Human Computer Ineraction Through Context Albrecht Schmidt Telecooperation Office(TecO),University of Karlsruhe,Karlsruhe,Germany Personal and Ubiquitous Computing Journal, Springer Verlag London, ISSN:1617-4909, Volume 4, Numbers 2-3 / Juni 2000. DOI:10.1007/BF01324126, pp. 191-199 (initial version presented at MobileHCI1999).

  2. outline • Introduction • Implicit Intercation • Perception • How Can HCI Benefit from Conext? • Conclusion and Further Work

  3. Introduction • Looking at HCI, it is apparent that interaction techniques are limited by the technology available • In this paper we start with the perception of simple concepts and with their exploitation

  4. Implicit Interatcion • Implicit vs. explicit HCI • What is context? • Applicatiobs in context • Identifying implicit HCI • Modelling implicit HCI

  5. Implicit vs. explicit HCI • The implicit interaction is based on two main concepts:‧perception‧interpretation • Implicit interaction will be used additionally to explicit interaction

  6. Implicit vs. explicit HCI • The ability to have perception of the use, the environment, and the circumstances • Mechanisms to understand what the sensors see, hear and feel • Applications that can make use of this information

  7. What is context? • What is definition of context? • In this paper they propose to regard situational context, such as location or state of the device, as implicit input to the system

  8. Applications in context • It can be observed that an application is:‧running on a specific device‧at a certain time‧used by one or more users‧in a certain physical environment‧in a social setting‧to solve a particular task

  9. Indentifying implicit HCI • What happens around an application while the application is in use? • Do the surroundings carry any valuable information for the application? • Are there any means to capture and extract the information? • How to understand the information?

  10. Indentifying implicit HCI • 1. create the set C • 2. set D = {} • 3. for each Ci ∈ C define Ai. // accuracy define Ui. // update rate identify Si // a sensor device // that is appropriate if cost(Si, Ai, Ui) is acceptable then D = D ∪{( Ci, Si, Ai, Ui)} next • 4. if D ≠ {} then for each vector Di in D define a set of application reaction Ri = {(Iij, Rij)} // Iij is input range, application reaction pairs Iij // Rij is application reaction else // implicit interaction is not used //(either no condition that are useful or too costly)

  11. Indentifying implicit HCI • 1:C is the set of surrounding conditions each Ci stands for one condiction • 3.If the cost for the identified sensing device Di is acceptable,then the vecter describing to the set D • 4.for each of conditions range values that are meaningful are identified and for ranges the reaction is defined

  12. Modelling implicit HCI <!ELEMENT context_interaction (context , action )> <!ELEMENT context (group+ )> <!ELEMENT group (#PCDATA )> <!ATTLIST group match (one | all | none ) #REQUIRED > <!ELEMENT action (#PCDATA )> <!ATTLIST action time CDATA ’0’ trigger (enter | leave | in ) #REQUIRED > Data type definition

  13. Modelling implicit HCI <context_interaction> <context> <group match=’one’> sensor_module.touch pilot.on </group> <group match=’none’> sensor_module.alone pilot.pen_down </group> </context> <action trigger=’enter’ time=’3’> pilot.notepad.confidential </action> </context_interaction> Context description

  14. Perception • Context awareness component • Sensor board • Related work on context sensing

  15. Context awareness component • The specific contexts in this paper are based on aural information

  16. Sensor board • They build a context recognition device equipped with a light sensor, acceleration sensor, a passive infrared sensor, a touch sensor, and a temperature sensor

  17. Related work on context sensing • A cup can aware of its statee.g. warm, cold, on table, drinking, moved • A jacket that knows if it is on the hanger or with user is persented

  18. How can HCI benefit from context • Output in context • Input in context • Context notepad on a palmpilot

  19. Output in context • Adapt the output to the current situation • Find the most suitable time interruption • Reduce the need for interruptions

  20. Input in context • adapt the input system to the current situation • Limit need for input • Reduce selection space

  21. Context NotePad on a PalmPilot • On/Off • Fontsize • Backlight • Privacy settings

  22. Conclusion and Further Work • The most important thing that system understands as input • What happens around the appliction • How can this be sensed • How to interpret this information

  23. Thank you

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