A comparison of p-dispersion heuristics
Computers and Operations Research
A framework for expressing and combining preferences
SIGMOD '00 Proceedings of the 2000 ACM SIGMOD international conference on Management of data
Filtering algorithms and implementation for very fast publish/subscribe systems
SIGMOD '01 Proceedings of the 2001 ACM SIGMOD international conference on Management of data
Design and evaluation of a wide-area event notification service
ACM Transactions on Computer Systems (TOCS)
The many faces of publish/subscribe
ACM Computing Surveys (CSUR)
Preference formulas in relational queries
ACM Transactions on Database Systems (TODS)
Modeling Uncertainties in Publish/Subscribe Systems
ICDE '04 Proceedings of the 20th International Conference on Data Engineering
Personalized Queries under a Generalized Preference Model
ICDE '05 Proceedings of the 21st International Conference on Data Engineering
Improving recommendation lists through topic diversification
WWW '05 Proceedings of the 14th international conference on World Wide Web
Foundations of preferences in database systems
VLDB '02 Proceedings of the 28th international conference on Very Large Data Bases
Top-k/w publish/subscribe: finding k most relevant publications in sliding time window w
Proceedings of the second international conference on Distributed event-based systems
Scalable ranked publish/subscribe
Proceedings of the VLDB Endowment
CARD: a decision-guidance framework and application for recommending composite alternatives
Proceedings of the 2008 ACM conference on Recommender systems
Efficient Computation of Diverse Query Results
ICDE '08 Proceedings of the 2008 IEEE 24th International Conference on Data Engineering
Efficient Rewriting Algorithms for Preference Queries
ICDE '08 Proceedings of the 2008 IEEE 24th International Conference on Data Engineering
ACM SIGMOD Record
A survey on representation, composition and application of preferences in database systems
ACM Transactions on Database Systems (TODS)
Incremental diversification for very large sets: a streaming-based approach
Proceedings of the 34th international ACM SIGIR conference on Research and development in Information Retrieval
Pricing information goods in distributed agent-based information filtering
OTM'11 Proceedings of the 2011th Confederated international conference on On the move to meaningful internet systems - Volume Part I
Dynamic diversification of continuous data
Proceedings of the 15th International Conference on Extending Database Technology
Approximate semantic matching of heterogeneous events
Proceedings of the 6th ACM International Conference on Distributed Event-Based Systems
Flexub: dynamic subscriptions for publish/subscribe systems in MANETs
DAIS'12 Proceedings of the 12th IFIP WG 6.1 international conference on Distributed Applications and Interoperable Systems
Language expressiveness and quality of service for publish/subscribe systems
Proceedings of the 9th Middleware Doctoral Symposium of the 13th ACM/IFIP/USENIX International Middleware Conference
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In publish/subscribe systems, users describe their interests via subscriptions and are notified whenever new interesting events become available. Typically, in such systems, all subscriptions are considered equally important. However, due to the abundance of information, users may receive overwhelming amounts of events. In this paper, we propose using a ranking mechanism based on user preferences, so that only top-ranked events are delivered to each user. Since many times top-ranked events are similar to each other, we also propose increasing the diversity of delivered events. Furthermore, we examine a number of different delivering policies for forwarding ranked events to users, namely a periodic, a sliding-window and a history-based one. We have fully implemented our approach in SIENA, a popular publish/subscribe middleware system, and report experimental results of its deployment.