Waseda Univ Nakajima Lab Interaction Group Computer-supported knowledge sharing in co-located...

Waseda Univ Nakajima Lab Interaction Group

Computer-supported knowledge sharing in co-located environments

Yasufumi Hirakawa, Harumi Mase, Eiji Tokunaga and Tatsuo Nakajima. Waseda University, Dep. of Computer Science


Contents

• Introduction• Problems• Approaches• Model about face-to-face knowledge sharing• Scenario : System for knowledge sharing• Survey• Survey results• Future work• Conclusions


Introduction

• Our experiences can convert into digital data– Pictures, Diaries(Blogs), Documents， Bookmarks,

Web browsing histories, histories about using devices, and so on…

– A ubiquitous computing environment has been realized• progressing technologies for digitalize our experiences• digital data has been increasing.

• Sharing users knowledge– we often share digital data : documents, show pictures...– We can noticed new ideas


Problems

• We must choose, store and edit the data.– Need a lot of time

• e.g. presentation– Increasing our data

• Ubiquitous computing environment– sensors

• Limited ways of communications thorough a network– difficult to communicate enough information

• gesture• emotion

– you are angry, laughing or crying?• reference term

– What do you indicate with the word, ”this”?


Approaches

To realize sharing our knowledge fluently...

We propose a system• records and aggregates data automatically

– our system record and show data.• doesn’t limit ways of communication, and progress

sharing user knowledge.– Tabletop Display

» face-to-face communication

figure: tabletop display


Model about face-to-face knowledge sharing


Scenario : System for knowledge sharing


Scenario : System for knowledge sharing

They use Firefox browser that was installed a extension to get web browsing histories and send them to a remote server.

Take a rest to change our thinking


Scenario : System for knowledge sharingThere are four RFID Readers on the tabletop display. Each Participant puts a personal device embedded a RFID tag on the RFID Reader.Our system authenticates tags, and get participants’ data from a remote server.The system shows the data on the table.


Click!


Survey

• We conducted a survey– at Embedded Technology 2005 Japan.– Participants in the exhibition

• We explained our scenario with our prototype system

– In the form of a questionnaire• based on three main issues

– 1) Whether our system is useful for users or not– 2) What designs of merged experiments are suitable for

users– 3) What functions are required for fluent knowledge

sharing in the system

– Informal observation of people using our prototype system


Survey results

• We obtained 124 responsesUsers want to…– use our prototype system

• More than 80%– share web histories about

• news and new commercial goods.• More than 50% users

– use our system • with senior workers, bosses, their friends, their followers,

junior subordinates...• in office, school, restaurant...

– 75% of the users are uncomfortable to share their all experiences to others


Survey results (cont’d)

– Users requested new functions• use keywords for searching• to notify whether you had already seen• to extract link structures


Future Work

• To extract relations between users’ web browsing histories and external websites

• The proper expression of “merged experiences” and maintaining privacy

• Automatic context sensing• Support other digital data

– not only web browsing histories

• Support for building users’ experiences as digital data on tabletop display

• Implement the functions users requested


Conclusions

• We proposed a system, face-to-face knowledge sharing using “merged experiences” that are automatically constructed from each user’s digital data.– Face-to-Face knowledge sharing tended to be promoted

by displaying merged experiences on a tabletop display.


Thank you for listening.


Conclusions

• We proposed a system, face-to-face knowledge sharing using “merged experiences” that are automatically constructed from each user’s digital data.– Face-to-Face knowledge sharing tended to be promoted

by displaying merged experiences on a tabletop display.

Questions?

Waseda Univ Nakajima Lab Interaction Group Computer-supported knowledge sharing in co-located...

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