• SABRE CSSW

• Kingsley Idehen (OpenLink)

Contents 1 Semantic Wiki 2 Space+Time in Web Trust 3 SIOC 4 Virtuoso 5 SPARQL on DBMS 6 Galaxy 7 IMAGENATION 8 Semantic Integrator 9 Collaborative Metadata for Geographic Information 10 SONIVIS 11 SoftWiki: Collaborative Development of Project Ontologies 12 DBPedia Relationship Finder 13 SoftWiki: Process Model for Wiki-Based Requirement Engineering 14 SoftWiki: Processing of Documents 15 SoftWiki: Shared Understanding 16 SoftWiki: SWORE Ontology 17 Semantic Wikipedia - checking the premises 18 BoWiki 19 SMEET 20 DBPedia

Semantic Wiki

09-26, 11:00, R. Langfeld, H. Sack, Jena

• Vergleich verschiedenen Sem-Wiki Systeme
• MarQL -> OWL
• WikiML
• "Semantic Text-Marker"

Space+Time in Web Trust

M. Bisker, Uni Münster

• trust as proxy for quality of information
• trust is always about people
• trust is transitive (to some degree)
• trust follows geographic patterns

SIOC

09-26, 12:00

http://sioc-project.org/

• RDF vocab for social interaction networks (replied-to, etc)

Virtuoso

O. Erling, I. Mikhailov

• RDF Store by OpenLink
• Federative RDBMS
• Native RDF store
• SPARQL, SPARUL
  • + grouping, + fulltext index
• synonym uris (same-as) -> merging
• In search of commons vocab... semantic views...

SPARQL on DBMS

C. Weiske, Uni Leipzig, AKSW

• SPARQL -> SQL translator, written in PHP

Galaxy

John Judge, IBM

• Ontology Network Miner
• Text Analysis: Pattern Matching, Annotation, POS, NE, Stemmig...
• What? Who? Urgent? Expert? Responsibility?
• Concepts, Documents, People, Events/Activities
• Soft Clustering

IMAGENATION

A. Walter, G. Nagypal

• Semantic annotation of images (and image parts)
• --> Commons?!

Semantic Integrator

09-26, 17:00: S. Lohmann, P. Heim, J. Ziegler - Leipzig; InteractiveSystems

• SoftWiki (Wiki for software development)
• pre-integration, validation, learning
• Social semantic structuring

Collaborative Metadata for Geographic Information

09-27, 10:15, Patric Mauve, Uni Münster

• Neighbourhood: creation, evaluation, maintenance
• Catalogs: Discovery of GeoInfo -> Layers, Feature Maps
  • What? When? Where? Who?
  • Culteral Bias: Terminology, Mental Models
• Collaboration
  • Relevance feedback
  • navigation trails
  • tags, categories
  • add/change properties
  • semantic annotations
  • refine domain model
• Semantics:
  • implicite: from statistical analysis (use soft and formal semantics)
  • soft: tags, folksonomy, possibly inconsistent (suggestions based on implicite semantics)
  • formal: ontologies, reasoning (incorporate soft and implicite semantics)
• Catalog: (conceptual) single point of failure
• Reputation

SONIVIS

• Wiki stats + graphs
• Network analysis and Visualization
• People, Information (Pages), Tasks (Time)
  • Social Networks (people/people), collaboration
  • page/page: wiki links
  • scopes: categories, namespaces, time
• Eclipse based, for MediaWiki
• Statistics (node, network, graph/selection)

---

• mediawiki -> dumps? yes!
• scaleable? no...
• categories transitive/recursive? not yet
• namespaces -> talk pages?
• admin actions?
• reverts

SoftWiki: Collaborative Development of Project Ontologies

09-27, 10:40, T. Teichert, Uni Leipzig

• SoftWiki -> Requirement Engineering
• Abstract application model (to be translated to a software model)
  • Collaborative Applications, multi-agent systems
  • Service-Oriented
  • short development cycle
• Models
  1. requirements model
  2. project model <-> domain ontology
  3. bug model
  • -> sowtware model (CASE, UML)

• SotWiki terminology (ontology): SWORE
  • Abstract Requirement (goals, scenarios, ...)
  • Stakeholder (participation, role...)

• Stakeholders (users) tag requirements/problems
• Mapping of requirements ontology to project ontology

• Tag Clouds

DBPedia Relationship Finder

• DBPedia: structured info from wikipedia (parse infoboxes)
• Properties of things
• Relationship Finder: Visualization
• Graph extracted from infoboxes - unconnected sub-graphs!
• Decomposition Algorithem
  • Pick random node (the origin of the component)
  • iteratively collect reachable nodes, remember distance
  • calculate min/max distance between nodes as difference/sum of distances to the origin
  • ~7 average path length
  • use to limit search space
  • use to preview available relations
• Finder
  • pick two objects
  • returns pathes along semantic relations
  • possibly exclude relations (like "location")
• Interresting for social networks (use FOAF instead of Wikipedia)

SoftWiki: Process Model for Wiki-Based Requirement Engineering

• Requirement Engineering, Software Egnineering & Wikis
• Model the user's requirements and goals
• low time-to-market
• culturally differences: languages, concepts, laws, standards
• new requirements: cooperation/collaboration, distributed, loosely couples systems & services

• User feedback: analyze the thousands of blogs about the iPhone, in order to refine the requirement & bug model
• Lots of individual requirements, need to identify duplicates or merge similar requirements
• Need to find a consensus about the requirements -> feedback loops

• Wiki-Based
  • Web -> Accessible
  • Simple contribution

1. Requirement Elicitation & Agreement (feedback) <-> semantic model
2. Information Analysis & Assignment (text minding) <-> semantic model
3. Requirements Preparing: export to CASE tools

SoftWiki: Processing of Documents

• Collect: system descriptions, use cases, specifications, customer feedback, weblogs, bug reports, etc
  • From existing documents
  • created collaboratively by stakeholders (wiki)
  • Domain ontologies, standards, etc
• Text Mining:
  • ConceptComposer & SemanticTalk
  • Terminology extraction, co-occurrances
  • phrase extraction
• Abstracts
• Topic Tracking/News alerts
• semantic word graphs

SoftWiki: Shared Understanding

-> InteractiveSystems

• Wiki based on OntoWiki
• Involve staekholders, from CEOs to end users
• UI: simple <-> complex
• Concepts: tags (folksonomy) <-> concepts (ontology)
• Semantic Wiki: highly structured participation (requirement specification)
• alternative: free text: "i need a button here!" + keywords/tags
  • better bug reporting / freature requests! <---------
• "reference points" (= tags?)
  • explicitely created
  • derived/mined
  • personal tags <-> ontological concepts
• Social Network: who tags what and how?
• tag clouds

SoftWiki: SWORE Ontology

• Core Ontology for Requirement Modelling
• Abstract Requirement: -> Goal, Scenario, Requirement; hierarchical/recursive
  • is-decided, maybe-decided
• Stakeholder: roles, vote, docussion; defines requirements
• combine with domain ontology
• map to project ontology (CASE tools)

• WIki Interface:
  • Pick knowledge base (OWL)
  • Navigate Class hierarchy
  • add/modify properties for classes
  • create/change instances
  • find similar/related instances
  • ratings
  • search/query, map (geo), calendar, history...
  • nested expandable boxes

Semantic Wikipedia - checking the premises

Rainer Hammwöhner [1], Uni Regensburg

• quality assesment - checking semantic in wikipedia
• pessimistic result
• en, de, fr, it: 462 article sample each
• Category System -> Thesaurus?
  • full structure for samples: about 20k
  • consistency: subordination? non-hierarchical? describtors?
  • depth ~ 12-15, longest path: up to 140 on en -> insane! not transitive!
  • cycles: a lot in en, few in de
  • maintenance categories: lots on en (topic stubs...)
  • tagging similarity between languages: Jaccard Measure (sic!)
• Interlanguage-Links
  • ~14 languages
  • some inconsistencies
• Link structure

• Results:
  • Keep users away from semantics!
  • make fuzzy thesaurus
  • align thesaurus between languages
    • longest shared pathes: de-en=8, en-fr=10, de-it=5
    • longest transitive containment path: de-en=9, en-fr=12, de-it=6

-> Facettenklassifikation

-> Transitive/Intersect!

-> CatScan!

BoWiki

J Bacher, Max Plank Institute / Uni Leipzig

• another semantic mediawiki
• domain knowledge
• n-ary relations (semediawiki uses binary)
• core ontology in the background -> reasoning
• inconsistent data is rejected
• relations have roles (participants) (->topic maps)

~> partiell konsistente logiken!

~> KnewCO! WikiProtein...

-> identity crisis!

PunkRock @ IRC

SMEET

• social interaction strongest driver of human behaviour
• socializing!
• Online -> Social Networks, asynchronous
• Real Life: synchronous. "meeting friends"
• Avatar Community + Telefone System
• you can "listen in" on people close by
• Webcam, Photos...
• "co-browsing" (send web page)
• "pool in" (call more people, without them being online; phone only)
• smeet spaces connected as a web
• hook up to skype, jahjah

-> how about no phone? experimental. (OSS!)

-> scaptch pad? whiteboard?

-> gestures? faces?

-> personal avatars?

• OpenId? FOAF?
• Weighted/emotionalized social links
• -> Match-Making, Dating Service...

DBPedia

Richard Cyganiak, FU Berlin

• Title/Name
• Relations + Properties from InfoBoxes
• Definitions (first sentence)
• Translations
• Images
• http://dbpedia.org/resource/Leipzig (concept) redir to:
  • http://dbpedia.org/page/Leipzig (HTML)
  • http://dbpedia.org/data/Leipzig (RDF)
• Wikipedia-URLs as URIs
• HTTP and RDF
• SPARQL interface
• Linked up to a lot of RDF sources: FOAD, US consensus, muscbrains, etc, etc

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• -> Concept-URIs ?