Utilizing Mind-Maps for Information Retrieval and User Modelling
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Utilizing Mind-Maps for Information Retrieval and User ModellingJoeran Beel, Stefan Langer, Marcel Genzmehr, Bela Gipp
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1. Introduction to mind-maps
2. Ideas for utilizing mind-maps beyond their original purpose
3. Prototype for mind-map-based user modeling
Agenda
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Docear Team
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Docear (www.docear.org)
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1. Introduction to Mind-Maps
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Example Mind-Map: Paper Draft
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Example Mind-Map: Paper Draft
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Example Mind-Map: Paper Draft
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Example Mind-Map: Paper Draft
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Example Mind-Map: Paper Draft
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Example Mind-Map: Paper Draft
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Example Mind-Map: Paper Draft
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Example Mind-Map: Paper Draft
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Example Mind-Map: Paper Draft
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Example: Conference & Journal Overview
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Example: Career Planning
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How to utilize mind-maps beyond their original purpose?
Research Question
Original Purpose Utilized for
Emails CommunicationUser modeling &
personalized advertisement
Social TagsPersonal document
organisationWebsite indexing
Research Articles Publishing research results Impact analysis
Mind-Maps Information management ???
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2. Ideas for Mind-Map based IR ApplicationsAnd An Analysis of the Feasibility
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Search Engines for Mind-Maps Document Indexing / Anchor Text
Analysis Document Relatedness Document Summarization Impact Analysis Trend Analysis Semantic Analysis User Modelling
Ideas, Overview
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Anchor Text Analysis / Website Indexing Document Relatedness / Distance Analysis Semantic Analysis User Modeling
Illustration of some ideas
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Dozens of mind-mapping tools 2 million active mind-mapping users 5 million new mind-maps every year 300,000+ public mind-maps
Number of (Public) Mind-Maps & Users
2010 2011 2012 2013 2014Public Mind-Maps 67,167 88,624 119,778 195,087 303,084MindMeister 23% 29% 36% 46% 50%Mindomo 28% 24% 21% 23% 20%XMind 37% 37% 35% 23% 16%Mindjet 0% 0% 1% 4% 10%Others 12% 10% 7% 5% 4%
- 50 100 150 200 250 300 350
0%10%20%30%40%50%60%
Thou
sand
s
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Example of a Mind-Map Gallery
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Analysis of 19,379 mind-maps Number of nodes per mind-map
Average = a few dozen Maximum = a few thousand
63.88% contain no links, Those who contain links, contain
typically only few
Ideas requiring links are less feasibleText-based ideas are feasible
Content Analysis
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Up to 61% acceptance for user modeling and recommendations
Around 10% acceptance for other ideas
User modeling is the most feasible idea
Users’ Acceptance
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3. User Modeling PrototypeA Research Paper Recommender System
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How to do the user modeling?
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Stereotype ApproachRecommend books that we assume to be relevant for researchers
Content Based Filtering Single Node I:
Terms of the last modified node (Recs on each modification)
Single Node II: Terms of the last modified node (Recs every few days)
Single Mind-Map: All terms of the last modified mind-map
All Mind-Maps: All terms of all mind-maps
User Modeling Approaches
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Recommender System
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Strong differences depending on the approach
Overall, reasonable CTR, despite the trivial approaches
Results I
0.28% 1.17%6.12% 6.24% 4.99%
0%5%
10%
Single Node(I)
Single Node(II)
CurrentMind-Map
All Mind-Maps
Stereotype
CTR
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Strong differences depending on the specific parameters (for the „All Mind-Maps“ approach)
Results II
3.16% 4.00%5.94% 6.51% 7.47% 6.28%
[1;9] [10;49]
[50;99]
[100;499]
[500;999]
1000+
Node Count
CTR
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Questions?
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