Towards a Lightweight User-Centered Content Syndication
Architecture
- Beyond Personal Information Management
- Beyond Closed Community Platforms
Berliner XML Tage 2005
13.09.2005
Vanda Lehel, Florian Matthes and Sheng Wei
Software Engineering betrieblicher Informationssysteme (sebis) Ernst Denert-Stiftungslehrstuhl
Lehrstuhl für Informatik 19 Institut für Informatik
TU München
Agenda
Motivation
Social Software
Open Protocols and Standards
User-Centered Social Software (UCSS)
Content Syndication Architecture
Social Software Services
Syndication Architecture for UCSS
Challenges and Implementations
Approaches to Information Management
Enterprise-Centered Perspective User-Centered Perspective Team-Centered Perspective Social Software Enterprise Software Groupware Semantic Web WeblogsWhat is social software?
Social software allows
individuals to form different
communities to connect or to
collaborate with each other
Social Software
Instant Messenger – Instant Messaging Service (also audio, video)
Internet Relay Chat – Chat Room Service
Internet Forums – Bulletin Board Service
Wikis – Wiki Server Software
Weblogs (Blogs) – Weblog Services (also photo blogs, video blogs, audio blogs)
Social Networks (Social Networking Services) – popular examples:
LinkedIn (www.linkedin.com), OpenBC (www.openbc.com), Friendster, …
Object-Centered Social Software (Social Bookmarking Services) - popular examples:
Del.icio.us (http://del.icio.us) bookmark sharing
Flickr (www.flickr.com) photo sharing
CiteULike (www.citeulike.org) bibliographic reference sharing
Social Networking Services (http://www.openbc.de)
Individual Benefits Make social network explicit Identify interesting new contacts Assess quality of contact requests Not bound to current employer Network Benefit Establish web of trust Public Profile Private Profile Personal ContactObject-Centered Social Software (http://del.icio.us)
Individual Benefits
Access own bookmarks from
everywhere
Learn about interesting new
content (for specific topic)
Find people through content
Assess relevance of content
Network Benefit
Establish shared vocabularies
Bookmark: Title, Description, Date, Tags, Bookmark Creator
Relevance ~ Citation Frequency
No “controlled” vocabulary
Easy Sharing Easy Sharing URLs easy to remember
High-End Weblog: Joi Ito‘s Web (http://joi.ito.com)
Individual Benefits Easy publishing of content Frequent updates Chronologic archiving Comment and feedback from readers Subscription to content Notification services Network Benefit Integration of social bookmarking servicesIntegration with social bookmarking services Local and remote
commenting
Notification services for updates
Open Protocols and Standards in Social Software
Storage Publishing Interchange Network Protocols Network Payload
XML
XML-based Microformats Networking
Content syndication
formats, e.g. RSS, RDF, Atom
Semantic formats, e.g.
RDF, OWL
Metadata formats, e.g.
Dublin Core, XMP, IPTC standards
Formats for resource
collection, e.g. OPML
Formats for resource
relationship, e.g. FOAF
xFolk for bookmark
syndication
XFN for human
relationships
GeoURL for locations
hCalendar for calendar
events
hCard for address books
XOXO for outlines and
Blogroll-like subscriptions
relTag for tags,
keywords, categories
XMDP for metadata
profiles
Network protocols &
architecture styles, e.g. SOAP, XML-RPC,
REST
XML-related APIs, e.g.
Blogger API,
MetaWeblog API, Atom API
Proprietary formats and
APIs, e.g. Technorati API, Flickr API
What Are the Limitations?
An Example for Enabling Relationships – Expert Finding
Relationships
Extraction type Supporting technologies
Explicit
Author-created relationships • Blogrolls • Friends on social networking sites • FOAF • Social Network • XFNLinking is the only one that's always unambiguously machine-readable.
Evolving
Observable relationships
• Comments • Trackbacks • Link logs
• Links in blog entries • Reverse-lookups • Popularity indexes
• Social network analysis • Semantic Web??
Towards User-Centered Social Software
Enterprise-Centered Portals 2000+ Object-Centered Social Software 2005+Multiple roles and contexts at once Open content formats and web protocols Tidal wave of digital micro-content
User-Centered Social Software Architecture
ICQ SO AP Sync Sync Syn c PDA Lap top PC RSS HTTP SM TP FO AF Community Plattform Content Services Community Plattform Community Plattform User-Centered Social Software 20??Changing roles over time Contexts travel with content
Concepts of User-Centered Social Software
Content: different types of personal information objects
private content: personal information systems
content published: community systems
Contacts: different peers in the social context of the user to share personal information with
RSS subscribers, trusted domains or buddies
Context: links together content and contacts, defines how objects are shared
users publish and share content Æ context travels with content
Organize your content in a social way
give feedback learn get feedback
Content Syndication Architecture for UCSS
So cial Software Se rv ice
<<De skto p>>
So cial So ftware Se rv ice
So cial So ftware Se rv ice
So cial So ftw are Serv ice
So cial So ftware Serv ice
So cial So ftware Serv ice So cial Organ ize r
Inbox Outb ox <<HTTP>> Personal Information Repository . . . . . . Content Context Contact . . . . . . S1 . . . . . . S2 . . . . . . Sn . . . . . . . . . . . . Sn+1 . . . . . . Sn+2 . . . . . . Sm <<HTTP>>
Content feed (RSS, Atom, RSS enclosure)
Comment feed (RSS, Atom) Tag feed (RSS, Atom)
Related content (OPML, FOAF)
Sub s c rip ti on Ser v ices
Local Comments (Comment API) Remote Comments, (Trackback, Pingback) Feed ba ck Serv ic es Social Software Services Pu bl icat io n Serv ic es Content publishing (Blogger API, Atom API) Link publishing Tag publishing Man a ge m e n t Serv ic es Administration with proprietary API (Flickr API, Atom API)
Comment notification, (Trackback, Pingback)
XML-based Content Syndication Architecture
Diverse decentralized network
Remixable web (applications)
An intermediation architecture which provides the capabilities to intermediate
constitutional services and applications.
Using unified interfaces to invoke services
Triples-oriented data model (learned from semantic web)
Collaborative knowledge flow and controlled information sharing
Information awareness /notification
Semantic search
Classification (Folksonomy tagging, paragraph-level tagging, rating……) vs. logical
Major Challenges
How to organize infomation objects?
Multiple community platforms
Rich infomation (Content, Contact, Context)
What relationships and how to represent
Simple and extensible formats
Views
Analysis according to relationships (discovery)
How to communicate / exchange information (syndication) in a unified view
More delivery mechanisms, e.g. XMPP (Jabber), HTTP, NNTP
Diverse formats, e.g. RSS, Atom, Microformat
Different APIs, e.g. XML-RPC, REST
Architecture implementation
Abstract model for services
Implementations
The delivery of the first version is scheduled in second half 2005 (open source??)
3 versions of UI
Rich client, i.e. SWT/JFace Thin client, i.e. Ajax??
Rich Internet Application (RIA), i.e. Macromedia Flex
Integration with current popular soical software services, e.g. Weblog, del.icio.us, Flickr, Technorati
Integration with Microsoft Enterprise Systems, e.g. Exchange, Active Directory, SharePoint
Integration with PIM tools, e.g. Outlook, SharpReader,
PersonalBrain
Florian Matthes - Social Organizer
Florian Matthes - Social Organizer
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Summary & Outlook
User-Centered Social Software as an extension of Personal Information
Management
Organizing content in a social way by the Social Organizer tool
