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Exploring the Evolution of Tagging: From Web 1.0 to Web 2.0 and Beyond

This study delves into the transition from implicit anchortext annotations in Web 1.0 to explicit tagging in Web 2.0. By comparing user-assigned tags and anchortext-derived tags, it examines the overlap and subjective nature of tag relevance. The research uses datasets from the web and Del.icio.us, analyzing how users perceive tag quality and relevance. Findings reveal a substantial tag overlap between anchortext and Del.icio.us tags, with users rating anchortags similarly to socially assigned tags, albeit subjectively. Despite advancements, Del.icio.us continues to introduce new tags, highlighting the evolving nature of tagging practices.

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Exploring the Evolution of Tagging: From Web 1.0 to Web 2.0 and Beyond

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  1. From Web 1.0 to Web 2.0 and Back – How did your Grandma Use to Tag? Sheila Kinsella, Adriana Budura, Gleb Skobeltsyn, Sebastian Michel, John G. Breslin, Karl Aberer

  2. From Web 1.0 – Anchortext… • Users link to resources of interest from their webpages (implicit annotations) • Limited to web authors

  3. …to Web 2.0 - Tagging • Explicit annotations of resources • Anyone can participate

  4. So has anything changed?

  5. Example results (1)

  6. Example results (2)

  7. Example results (3)

  8. Experimental study • Datasets: • Web: WEBSPAM-2007, 12M pages from .uk domain • Del.icio.us: 2007 Crawl containing tags for 4.5M URLs • Overlap between datasets: 192k URLs • Goal: ? ≈

  9. Results

  10. Overlap between the tags • Anchortags overlap with del.icio.us tags • Two measures: • deliciousness@k: how many anchortags are also among del.icio.us tags • anchortextness@k: how many del.icio.us tags can be inferred from anchortext

  11. User study • Tags for 20 URLs: • top-5 tags from del.icio.us • top-5 anchortags • 25 people score every tag: • 0 (non-relevant), • 1 (somewhat relevant), • 2 (very relevant).

  12. But users don’t always agree • Relevance of a tag is highly subjective

  13. Many new social tags

  14. Conclusions • Substansial overlap between top tags derived from anchortext and del.icio.us tags • Users rate anchortags at a similar quality to user-assigned tags – but this is subjective • Del.icio.us still provides many new tags ≈ ≠

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