- “A tag cloud (or weighted list in visual design) can be used as a visual depiction of content tags used on a website. Often, more frequently used tags are depicted in a larger font or otherwise emphasized, while the displayed order is generally alphabetical. Thus both finding a tag by alphabet and by popularity is possible. Selecting a single tag within a tag cloud will generally lead to a collection of items that are associated with that tag”(Wikipedia, retrieved 13:13, 14 September 2006 (MEST))
Here is a practical explanation from Communicopia (retrieved 13:13, 14 September 2006 (MEST) and slightly shortened):
Below is a tagcloud for this wiki, with maintenance categories filtered out
2 Methodes and application areas
According to the Wikipedia article , there are to methods for producting a tag cloud:
- The number of times that tag has been applied to a single item. Therefore, a tag becomes bigger when more people decide to apply it to a single item.
- The number of items that have been given that tag. Therefore, more popular tags become bigger.
At the time of writing this, there is still a lot of discussion on how to optimize computing of tag clouds and visualization methods. See Hassan-Monteroa and Herrero-Solan (2006) for discussion and a proposal.
Tag clouds are popular in:
- the blogsphere
- in social bookmarking applications (links management)
- in content syndications that implement collaborative tagging
See social software
3.1 Tag/word cloud software
- 9 Word Cloud Generators That Aren’t Wordle, By Kate Smitty on August 29, 2013
- Semantic Result Formats allows to generate word clouds in MediaWikis.
3.2 Examples of webservices with tag clouds
- del.icio.us - cloud of users' most popular words tagging web pages
- Technorati - most popular tags of blogs
- Flickr - most popular tags of photos
- Tag Clouds Gallery: Examples And Good Practices, Smashing Magazine, By Vitaly Friedman, November 7th, 2007.
Most of the better blog engines allow (optionally) to generate and display a tag cloud.
3.3 Examples of tag clouds from the world of education
- EdTechTalk Blogs tag cloud
- Education futures tag clould
- Resource-Base - Standards, Architectures and Open Source in Education tag cloud
- Brooks, C. H. and Montanez, N. 2006. Improved annotation of the blogosphere via autotagging and hierarchical clustering. In Proceedings of the 15th International Conference on World Wide Web (Edinburgh, Scotland, May 23 - 26, 2006). WWW '06. ACM Press, New York, NY, 625-632. DOI= http://doi.acm.org/10.1145/1135777.1135869. Abstract/HTML/PDF
- Hassan, Yusef and Monteroa Víctor Herrero-Solana (2006), Improving Tag-Clouds as Visual Information Retrieval Interfaces, International Conference on Multidisciplinary Information Sciences and Technologies, InSciT2006. Mérida, Spain. October 25-28, 2006. PDF Preprint
- Heymann, P., Garcia-Molina, H. (2007). Collaborative creation of communal hierarchical taxonomies in social tagging systems. InfoLab Technical Report, Computer Science Department, Stanford University Abstract/PDF/PS/Text
- Hsieh, W.T., Lai, W.S., Chou S.C.T.: A collaborative tagging system for learning resources sharing. In IV International Conference on Multimedia and Information and Communication Technologies in Education (m-ICTE2006), Seville, Spain (2006) 1364-1368