Ways of Computing Diverse Collaborative Recommendations
Conversational recommender systems adapt the sets of products they recommend in light of user feedback. Our contribution here is to devise and compare four different mechanisms for enhancing the diversity of the recommendations made by collaborative recommenders. Significantly, we increase diversity using collaborative data only. We find that measuring the distance between products using Hamming Distance is more effective than using Inverse Pearson Correlation.
KeywordsActive User Recommender System Target Item Near Neighbour Rating Matrix
Unable to display preview. Download preview PDF.
- 1.Rafter, R., Smyth, B.: Towards conversational collaborative filtering. In: McGinty, L., Crean, B. (eds.) Procs. of the 15th Artificial Intelligence and Cognitive Science Conference, pp. 147–156 (2004)Google Scholar
- 2.Herlocker, J.L.: Understanding and Improving Automated Collaborative Filtering Systems. Ph.D thesis, University of Minnesota (2000)Google Scholar
- 3.Bridge, D., Kelly, J.P.: Diversity-enhanced conversational collaborative recommendations. In: Creaney, N. (ed.) Procs. of the 16th Irish Conference on Artificial Intelligence & Cognitive Science, University of Ulster, pp. 29–38 (2005)Google Scholar
- 4.Smyth, B., McClave, P.: Similarity vs. diversity. In: Aha, D.W., Watson, I. (eds.) Procs. of the 4th International Conference on Case-Based Reasoning, pp. 347–361. Springer, Heidelberg (2001)Google Scholar
- 5.Bridge, D., Ferguson, A.: Diverse product recommendations using an expressive language for case retrieval. In: Craw, S., Preece, A. (eds.) Procs. of the 6th European Conference on Case-Based Reasoning, pp. 43–57. Springer, Heidelberg (2002)Google Scholar
- 6.McSherry, D.: Diversity-conscious retrieval. In: Craw, S., Preece, A. (eds.) Procs. of the 6th European Conference on Case-Based Reasoning, pp. 219–233. Springer, Heidelberg (2002)Google Scholar
- 8.McGinty, L., Smyth, B.: On the role of diversity in conversational recommender systems. In: Ashley, K., Bridge, D. (eds.) Procs. of the 5th International Conference on Case-Based Reasoning, pp. 276–290. Springer, Heidelberg (2003)Google Scholar