Long Time No See: The Probability of Reusing Tags As a Function of Frequency and Recency
D. Kowald, P. Seitlinger, C. Trattner, und T. Ley. Proceedings of the Companion Publication of the 23rd International Conference on World Wide Web Companion, Seite 463--468. Republic and Canton of Geneva, Switzerland, International World Wide Web Conferences Steering Committee, (2014)
In this paper, we introduce a tag recommendation algorithm that mimics the way humans draw on items in their long-term memory. This approach uses the frequency and recency of previous tag assignments to estimate the probability of reusing a particular tag. Using three real-world folksonomies gathered from bookmarks in BibSonomy, CiteULike and Flickr, we show how incorporating a time-dependent component outperforms conventional "most popular tags" approaches and another existing and very effective but less theory-driven, time-dependent recommendation mechanism. By combining our approach with a simple resource-specific frequency analysis, our algorithm outperforms other well-established algorithms, such as FolkRank, Pairwise Interaction Tensor Factorization and Collaborative Filtering. We conclude that our approach provides an accurate and computationally efficient model of a user's temporal tagging behavior. We demonstrate how effective principles of information retrieval can be designed and implemented if human memory processes are taken into account.