Towards “Community Web”
or yet another CSCW (Community-Supported Creative Web)

Hideaki Takeda, Ikki Ohmukai, Masahiro Hamasaki
National Institute of Informatics&The Graduate University for Advanced Studies
Hideaki Takeda / National Institute of Informatics

Information and Communication Activities
zTwo layers for our activities

Information layer only concerns explicitly represented and processedinformation.
 Communication layer concerns potential information. Potential information
can be revealed through communication among people.
Communication Layer
Collaborate
RelatePresent

Information LayerCollectCreateDonate

Hideaki Takeda / National Institute of Informatics

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Information and Communication Activity Navigation(ICAN)z

Support by computers for six categories of ICA
Community Navigator: Collaborative Scheduling Support System for Conferences
Social Scheduler: Collaborative Scheduler for Personal Resources

Collaborate
RelatePresent

Kmedia: Finding relationship
via WWW bookmarks

TelMeA: Expressive Mediafor Online Communities

NMM:Re-configuration ofpersonal human network

Semblog: Collaborative Personal Knowledge Publishing via Weblog

CollectCreate
DonateHideaki Takeda / National Institute of Informatics

Semblog Projectzzz

Applying Weblog and Semantic Web technologies forICA support.
Model “Person” on Web
 Weblog: Information archive for individuals
Weblog
 Foaf
 Interpersonal relations
 Links between Weblogs
Weblog
 Foaf relations
StepsWeblog
 Phase 1：Platformz Metadata design
Weblogz Basic tools for seamless support insearching, editing, and publishing Phase 2: Applicationsz Recommendationz Search
Hideaki Takeda / National Institute of Informatics

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Semblog Productsz

RSS-based information exploiter Extension of RSS aggregator Seamless support of searching, editing, and publishing Searching: search from myself (egocentric search) Editing: (weblog tools)
 Publishing: Three ways
z Check: which weblogs I am readingz Clip: which entries I am interested
z Post: what I am thinking
 Developed Tools
z RNA：Server-side scripts
z glucose：Windows client
Hideaki Takeda / National Institute of Informatics

RNA: Personal RDF Suite
http://www.semblog.org/zzz

Extension of RSS aggregator User can Register weblogs (Check) View entries from various aspect(HTML/RSS) Preserve interested entries (Clip)
 (Post) System does
 TrackBack extraction
 Keep Metadata-added cache
Publishing Checked, Clipped, and Postedentries Re-distribution of RSS
FOAF Management
 FOAF TrackBack (formally “acsh”)
Hideaki Takeda / National Institute of Informatics

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glucose: RSS Aggregator / Weblog Editor
http://glucose.dip.jp/z

A client program to support searching, editing, and posting User can Register weblogs (Check) View weblogs with 3-pane interface
z TrackBack extraction (Followed by “Re:”) Preserve entries (Clip) Post via weblogs (Post) Anonymous information distribution by P2P
 View FOAF

Hideaki Takeda / National Institute of Informatics

Hideaki Takeda / National Institute of Informatics

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Community Web ApplicationszEgocentric Search Control：ESC
 Search for Authoring Rank contents close to authors
z Distance in graph:z Distance by semantic similarity
 Construction of Egocentric Network
 From links from/to their entriesz Links and trackbacks
 From FOAF links

Hideaki Takeda / National Institute of Informatics

Community Navigator
Cooperative Scheduling System for Conference

Hideaki Takeda / National Institute of Informatics

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Community Navigator
Cooperative Scheduling System for Conference

Hideaki Takeda / National Institute of Informatics

Recommendation
Recommendation by pattern similarityNaïve collaborative filtering Paper recommendation
 Person recommendationz Recommendation by personal network
Reply on selection by friends
 Paper recommendation
 Person recommendation
zPaper
1

Paper
2

Paper
3Paper
4Paper5

Person A

10111

Person B

010

10

Person C

111

10

Person D

00

111

Hideaki Takeda / National Institute of Informatics

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Recommendation

Hideaki Takeda / National Institute of Informatics

Foaf and Social Networking
Orkut / GREE(jp) / mixi(jp) / ...
 Network for networking
 Closed systems
z Foaf Open systems
 But what is motivation? What purpose?
z Our model (ICA) Building interpersonal network andexchanging information should be done
simultaneously
zHideaki Takeda / National Institute of Informatics

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