Blog Classification Using Tags: An Empirical Study

  • Aixin Sun
  • Maggy Anastasia Suryanto
  • Ying Liu
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4822)


With an exponential growth of Weblogs (or blogs), many blog directories have appeared to help users to locate topical blogs. As tags are commonly used to describe blogs, we study the effectiveness of tags in blog classification. Compared with titles and descriptions, our experiments, using 24,247 blogs, showed that tags could lead to better classification accuracy. It is interesting to observe that more tags did not necessarily lead to better classification accuracy. To better describe blogs, we have also proposed a tag expansion algorithm that assigns a blog more tags that are often co-occur with those already associated with the blog. Our experiments showed that tag expansion helped to improve the recall of blog classification with the price of precision degradation.


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  1. 1.
    Berendt, B., Hanser, C.: Tags are not metadata, but just more content - to some people. In: Proc. of Int’l Conf. on Weblogs and Social Media (ICWSM 2007), Colorado, USA (2007)Google Scholar
  2. 2.
    Brooks, C.H., Montanez, N.: Improved annotation of the blogosphere via autotagging and hierarchical clustering. In: Proc. of WWW 2006, Edinburgh, Scotland, pp. 625–632 (2006)Google Scholar
  3. 3.
    Dumais, S., Chen, H.: Hierarchical classification of web content. In: Proc. of SIGIR 2000, Athens, Greece, pp. 256–263 (2000)Google Scholar
  4. 4.
    Fogaras, D., Rácz, B., Csalogány, K., Sarlós, T.: Towards scaling fully personalized pagerank: Algorithms, lower bounds, and experiments. Internet Mathematics 2(3), 333–358 (2005)MATHMathSciNetGoogle Scholar
  5. 5.
    Gruhl, D., Guha, R., Liben-Nowell, D., Tomkins, A.: Information diffusion through blogspace. In: Proc. of WWW 2004, New York, pp. 491–501 (2004)Google Scholar
  6. 6.
    Hayes, C., Avesani, P., Veeramachaneni, S.: An analysis of the use of tagging in a web blog recommender system. In: Proc. of IJCAI 2007, Hyderabad, India, pp. 2772–2777 (2007)Google Scholar
  7. 7.
    Jeh, G., Widom, J.: Scaling personalized web search. In: Proc. of WWW 2003, pp. 271–279. ACM Press, New York (2003)CrossRefGoogle Scholar
  8. 8.
    Joachims, T.: Text categorization with support vector machines: learning with many relevant features. In: Proc. of 10th European Conf. on Machine Learning, Chemnitz, Germany, pp. 137–142 (1998)Google Scholar
  9. 9.
    Kolari, P., Finin, T., Joshi, A.: Svms for the blogosphere: Blog identification and splog detection. In: Proc. of AAAI 2006 Spring Symposium on Computational Approaches to Analysing Weblogs (2006)Google Scholar
  10. 10.
    Marlow, C., Naaman, M., Boyd, D., Davis, M.: Ht06, tagging paper, taxonomy, flickr, academic article, to read. In: Proc. of ACM HYPERTEXT 2006, Odense, Denmark, pp. 31–40 (2006)Google Scholar
  11. 11.
    Ni, X., Xue, G.-R., Ling, X., Yu, Y., Yang, Q.: Exploring in the weblog space by detecting informative and affective articles. In: Proc. of WWW 2007, Banff, Alberta, Canada, pp. 281–290 (2007)Google Scholar
  12. 12.
    Sebastiani, F.: Machine learning in automated text categorization. ACM Computing Surveys 34(1), 1–47 (2002)CrossRefGoogle Scholar
  13. 13.
    Sood, S., Owsley, S., Hammond, K., Birnbaum, L.: Tagassist: Automatic tag suggestion for blog posts. In: Proc. of Int’l Conf. on Weblogs and Social Media (ICWSM 2007), Colorado, USA (March 2007)Google Scholar
  14. 14.
    Sun, A., Lim, E.-P.: Web unit mining – finding and classifying subgraphs of web pages. In: Proc. of ACM CIKM 2003, New Orleans, LA, USA, pp. 108–115 (2003)Google Scholar
  15. 15.
    Sun, A., Lim, E.-P., Ng, W.-K.: Web classification using support vector machine. In: Proc. of 4th WIDM held in conj. with CIKM 2002, Virginia, USA (2002)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Aixin Sun
    • 1
  • Maggy Anastasia Suryanto
    • 1
  • Ying Liu
    • 2
  1. 1.Nanyang Technological UniversitySingapore
  2. 2.Hong Kong Polytechnic University, Hong KongChina

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