Semantics To The Bookmarks: A Review of Social Semantic Bookmarking Systems
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The document provides an overview of social semantic bookmarking systems. It introduces social bookmarking and semantic annotation approaches and their advantages and disadvantages. It then describes seven prominent social semantic bookmarking systems: BibSonomy, SOBOLEO, Fuzzzy, GroupMe!, Twine, ZigTag, and Faviki. Differentiating dimensions between the systems include the types of tag relations allowed, how semantic structures are maintained, how semantics are used, and issues around export formats and interoperability. The document aims to outline the current state of the art in social semantic bookmarking.
Semantics To The Bookmarks: A Review of Social Semantic Bookmarking Systems
- 1. Semantics to the Bookmarks: A Review of Social Semantic Bookmarking Systems Simone Braun, Claudiu Schora, Valentin Zacharias
- 2. This Presentation Goal: An overview of the state of the art in Social Semantic Bookmarking Part 1: Introducing Social Semantic Bookmarking Part 2: Social Semantic Bookmarking Systems Part 3: Some Important Differentiating Dimensions
- 3. Part 1: Introducing Social Semantic Bookmarking Part 1.1: Social Bookmarking Systems Part 1.2: Semantic Annotation Systems Part 1.3: Social Semantic Bookmarking
- 4. Social Bookmarking, Definition Bookmark: Manually created reference to (internet) content deemed interesting (Linguistic) Tag: Arbitrary keyword assigned to an entity (e.g. bookmark) to aid in management and retrieval Social Bookmarking Site: Website facilitating discovery of interesting content & persons through shared tags and bookmarks
- 5. Social Bookmarking Advantages & Disadvantages Advantages: Lightweight, easy to use, adaptable, no setup, proven used by millions of users. Disadvantages: Lack of precision due to (Mis-)Spelling, Polysemy, Homonymy Lack of recall due to Multilingualism, Synonymy, Basic Level Phenomena
- 6. Semantic Annotation, Definition Annotation: An addition made to an entity to aid management, retrieval etc. Semantic Annotation: OntoMat An annotation done using a term described with some background knowledge (usually contained in an ontology) e.g. its relation to other terms
- 7. Semantic Annotation Advantages & Disadvantages Advantages: Better Retrieval due to explicitly represented concept relations improving query and browse functionality Better Use Of Annotation due to standardized languages and machine understandable annotations allow for better interoperability between systems
- 8. Semantic Annotation Advantages & Disadvantages Disadvantages: High Cost: Ontologies are usually created by highly paid knowledge engineers that also first need to learn about the domain Low Appropriateness due to the technical, personal and temporal separation between creation and use of ontology heavyweight process large upfront investment high time lack between concept emergence and inclusion in ontology errors due to limited domain understanding of knowledge engineers
- 9. Social Bookmarking vs. Semantic Annotation Social Bookmarking lacks semantic precision and recall Semantic Annotation stumbles because of the separation between creation and use of the semantic model Social Semantic Bookmarking combines the advantages of both while avoiding the problems
- 10. Social Semantic Bookmarking Combines these paradigms by allowing lightweight and social organization of bookmarks with tags extended by semantic definitions and descriptions that also evolve (collaboratively) within the same system
- 11. Part 2: Social Semantic Bookmarking Systems BibSonomy ZigTag SOBOLEO Faviki Fuzzzy gnizr GroupMe Annotea Twine
- 12. BibSonomy System for the management of internet resources and publication entries, tailored towards academics Created by the University Kassel Extends the tag model with relations between tags Try it at: http://www.bibsonomy.org/ No Installation
- 13. SOBOLEO SOBOLEO: SOcial BOokmarking and Lightweight Engineering of Ontologies Social Semantic Bookmarking System created by FZI Allows simple tags but also concepts with multiple labels, relations etc. Supports a community of practice in the joint structuring of Try it at: a domain. http://tool.soboleo.com/ No Registration, No Installation
- 14. Fuzzzy Manages bookmarks of internet resources, ISBN numbers, media files and geographic locations Developed at the University of Oslo Allows a large number of relations between tags Unique in that it allows voting on all aspects of the semantic model to facilitate gardening Try it at: http://www.fuzzzy.com No Installation
- 15. GroupMe! Bookmarking of web resources with tag groups as additional structure Created by the University of Hannover Additional focus on making bookmarks of multimedia resources more easily accessible Try it at: http://groupme.org/ No Installation
- 16. Twine Organizing and sharing of bookmarks of web pages, images, videos, products and books Commercial product developed by Radar Networks Main ordering principle Twine kind of user interest group. Tags related through use in same Twine Extensive use of automatic classification to reduce tagging effort Try it at: http://www.twine.com No Installation
- 17. ZigTag Organizes bookmarks of internet resources Commercially run by a small Canadian company Allows the users to choose from a given list of tags (ZigTags) with a specific meaning Sets ZigTags automatically into Try it at: relation http://www.zigtag.com No Installation
- 18. Faviki Manages bookmarks of internet resources Developed by Serbian Web designer Vuc Milicic Unique in that it relies on Wikipedia articles as tags Uses DBpedia to support multilinguality Try it at: http://www.faviki.com No Installation
- 19. Part 3: (Some) Important Differentiating Dimensions Part 3.1: Tag Relations Part 3.2: Semantic Consistency Part 3.3: Use of Semantics Part 3.4: Export & Interoperability
- 20. Tag Relations All analyzed systems provide support for relations between tags Only SOBOLEO, Fuzzzy and BibSonomy allow explicitly user created relations For Twine and GroupMe! tag relations are indirectly affected by users creating collections
- 21. Semantic Consistency Structure is local, i.e. only usable by the user that created it (BibSonomy) Global structure is maintained collectively according to Wiki principle (SOBOLEO, Fuzzzy) Global structure is only indirectly computed from user actions (GroupMe!, Twine) Global structure is imported or only edited by administrators (ZigTag, Faviki)
- 22. Use of Semantics Additional semantics is mainly used to support tag-based navigation As far as we know, no inferencing engine is used Integrating semantics into keyword based search is an area of current active development (e.g. Faviki, SOBOLEO, Twine)
- 23. Export & Interoperability Data Exchange and Interoperability main promise of Semantic (Web) Technologies All systems support some kind of export functionality, but varied and incompatible formats (BURST, SWRC, XTM, DCMI, SKOS, SCOT ..) Promise of interoperability currently not realized, but active area with CommonTag as format that could make interoperability possible
- 24. Summary Social Semantic Bookmarking Systems combine Social Bookmarking and Semantic Annotation by allowing lightweight, flexible annotation but also more complex and formal description of tags wich evolve (collaboratively) within the same system
- 25. Summary At least seven such systems are actively developed: BibSonomy, SOBOLEO, Fuzzzy, GroupMe!, Twine, ZigTag and Faviki Import differentiating dimension and areas of current development are: kind of relations edit scopes the use of the semantics export formats
- 26. Thank you for your Attention ! Simone Braun (braun@fzi.de) Claudiu Schora (Claudiu.Schora@fzi.de) Valentin Zacharias (zach@fzi.de) SOBOLEO demo at 3:40 pm at MATURE project booth or try SOBOLEO at: http://tool.soboleo.com/ No Registration, No Installation