| December 2009 | Vol. 32 No. 4 |
IEEE Computer Society
|
 Letters |
| Letter from the Editor-in-Chief | David Lomet | 1 |
| Report: 4th Int'l Workshop on Self-Managing Database Systems (SMDB 2009) |   |
| Ashraf Aboulnaga and Kenneth Salem | 2 |
| Letter from the Special Issue Editor | Marios Hadjieleftheriou and Vassilis J. Tsotras | 6 |
Special Issue on Result Diversity |
| An Axiomatic Framework for Result Diversification | Sreenivas Gollapudi, Aneesh Sharma | 7 |
| The KNDN Problem: A Quest for Unity in Diversity | Jayant R. Haritsa | 15 |
| Making Product Recommendations More Diverse | Cai-Nicolas Ziegler, Georg Lausen | 23 |
| Battling Predictability and Overconcentration in Recommender Systems |   |
| Sihem Amer-Yahia, Laks V.S. Lakshmanan, Sergei Vassilvitskii, Cong Yu | 33 |
| Addressing Diverse User Preferences: A Framework for Query Results Navigation | Zhiyuan Chen, Tao Li | 41 |
| Diversity over Continuous Data | Marina Drosou, Evaggelia Pitoura | 49 |
| Efficient Computation of Diverse Query Results | Erik Vee, Jayavel Shanmugasundaram, Sihem Amer-Yahia | 57 |
| Diversity in Skylines | Yufei Tao | 65 |
Announcements and Notices |
| ICDE 2010 Conference | 73 |
| VLDB 2010 Conference | 74 |
| Symposium on Cloud Computing | backcover |