Finding Cohesive Subgroups and Relevant Members in the Nokia Friend View Mobile Social Network
Get the Google Feeling! Supporting Users in Finding Relevant Sources
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Transcript of Get the Google Feeling! Supporting Users in Finding Relevant Sources
Supporting Users in Finding Relevant Sources of Linked Open Data at Web-Scale
Thomas Gottron, Ansgar Scherp, Bastian Krayer, Arne Peters
Get the Feeling!
Thomas Gottron BTC 2012 2Get the Google Feeling
System Support for Searchers
Bates, M.J.: Where should the person stop and the information search interface start? Information Processing and Management 26(5), 575–591 (1990)
none
displayoptions
execute oncommand
automaticexecution
System involvement
Mov
e User activityTa
ctic
Strata
gem
Strate
gy
monitor andrecommend
OperationalSystems
(then)
Area of recommended development
Hold for later
Hold for later
(skip)
Pure user activity
Thomas Gottron BTC 2012 3Get the Google Feeling
System Support Helps: Query Specific Snippets
Tombros, A., Sanderson, M.: Advantages of query biased summaries in information retrieval.SIGIR’98. pp. 2–10 (1998)
Recall Precision
Speed Satisfaction
Thomas Gottron BTC 2012 4Get the Google Feeling
System Support Helps: Query Suggestions
Kelly, D., et al. Effects of popularity and quality on the usage of query suggestions during information search. CHI '10, p 45-54, (2010)
41% of all queries were chosen from suggestions
Find entry point Think out of the box Identify new query terms
Thomas Gottron BTC 2012 5Get the Google Feeling
Did you mean?
Result Set Size
Result Snippets
Related Queries
Ranked Retrieval
Thomas Gottron BTC 2012 7Get the Google Feeling
Schema-based Index Design
Thomas Gottron BTC 2012 8Get the Google Feeling
„Under the hood“
SPARQL
Snippets
Generalize
Retrieve Datasources
Query translation
Rank
Specify
Count
Select
Select
• 1 query for result set and result set size• N queries for ranking data and snippets• 2 queries per related query
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Stats
Use of the complete BTC 2012 dataset Index size
133M schema triples 224M payload triples
Commodity hardware Data processing LODation service provision
Index construction (15h) and optimization (5h) Response time: < 1s on a single CPU machine
Get the Feeling!
Thank you!