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Displaying 1-6 out of 6 total
PrefDB: Supporting Preferences as First-Class Citizens in Relational Databases
Found in: IEEE Transactions on Knowledge and Data Engineering
By Anastasios Arvanitis,Georgia Koutrika
Issue Date:June 2014
pp. 1-1
In this paper, we argue that preference-aware query processing needs to be pushed closer to the DBMS. We introduce a preference-aware relational data model that extends database tuples with preferences and an extended algebra that captures the essence of p...
Towards Preference-aware Relational Databases
Found in: Data Engineering, International Conference on
By Anastasios Arvanitis,Georgia Koutrika
Issue Date:April 2012
pp. 426-437
In implementing preference-aware query processing, a straightforward option is to build a plug-in on top of the database engine. However, treating the DBMS as a black box affects both the expressivity and performance of queries with preferences. In this pa...
Probabilistic contextual skylines
Found in: Data Engineering, International Conference on
By Dimitris Sacharidis, Anastasios Arvanitis, Timos Sellis
Issue Date:March 2010
pp. 273-284
The skyline query returns the most interesting tuples according to a set of explicitly defined preferences among attribute values. This work relaxes this requirement, and allows users to pose meaningful skyline queries without stating their choices. To com...
How fresh do you want your search results?
Found in: Proceedings of the 22nd ACM international conference on Conference on information & knowledge management (CIKM '13)
By Anastasios Arvanitis, Shiwen Cheng, Vagelis Hristidis
Issue Date:October 2013
pp. 1271-1280
Researchers have recognized the importance of utilizing temporal features for improving the performance of information retrieval systems. Specifically, the timeliness of a web document can be a significant factor for determining whether it is relevant for ...
Efficient influence-based processing of market research queries
Found in: Proceedings of the 21st ACM international conference on Information and knowledge management (CIKM '12)
By Anastasios Arvanitis, Antonios Deligiannakis, Yannis Vassiliou
Issue Date:October 2012
pp. 1193-1202
The rapid growth of social web has contributed vast amounts of user preference data. Analyzing this data and its relationships with products could have several practical applications, such as personalized advertising, market segmentation, product feature p...
Increasing message relevance in social networks via context-based routing
Found in: Proceedings of the 3rd international workshop on Modeling social media (MSM '12)
By Anastasios Arvanitis, John S. Baras, Vasiliki Pouli
Issue Date:June 2012
pp. 21-24
Several applications are built around sharing information by leveraging social network connections. For example, in social buying sites like Groupon, a deal is usually forwarded to interested recipients through their social graph. A primary goal is to impr...