The Department of Computer Science at the University of Cyprus cordially invites you to the Colloquium entitled:

Indoor Data Management: Status and Challenges


Speaker: Dr. Demetris Zeinalipour
Affiliation: University of Cyprus, Cyprus
Category: Colloquium
Location: Room 148, Faculty of Pure and Applied Sciences (FST-01), 1 University Avenue, 2109 Nicosia, Cyprus (directions)
Date: Tuesday, February 17, 2015
Time: 18:00-19:00 EET
Host: Yannis Dimopoulos (

People spend 80-90% of their time in indoor environments such as offices, undergrounds, shopping malls and airports. On the other hand, the uptake of interesting applications in indoor spaces (e.g., navigation, inventory management and elderly support) has so far been hampered by the lack of technologies that can provide indoor location (position) accurately, in real-time, in an energy-efficient manner and without expensive additional hardware. Modern smartphones currently rely on cloud-based Indoor Positioning Services (IPS), which can provide the location of a user upon request but those are both inaccurate and additionally raise important location privacy concerns, as the IPS can know where the user is at all times. In this talk, I will start out by overviewing the building blocks of Anyplace, our in-house IPS that recently won several international research awards for its accuracy (i.e., less than 2 meters) and utility. Anyplace deploys a number of innovative concepts, including crowdsourcing, big-data management, energy-aware processing, multi-device optimization and mobile data management, in order to realize a power-efficient and accurate indoor localization and navigation technology. In the second part of this talk, I will focus on an algorithm we developed for protecting users from location tracking by the IPS, without hindering the provisioning of fine-grained location updates on a continuous basis. Our algorithm exploits a k-Anonymity Bloom filter and a generator of camouflaged localization requests, both of which are shown to be resilient to a variety of privacy attacks.

Short Bio:
Demetris Zeinalipour (PhD, University of California, Riverside, 2005) is an Assistant Professor of Computer Science at the University of Cyprus, directing the Data Management Systems Laboratory (DMSL). Before his current appointment, he served the University of Cyprus and the Open University of Cyprus as a Lecturer of Computer Science and was also a Visiting Researcher at the network intelligence lab of Akamai Technologies, Cambridge, USA. Demetris has served as the PC Co-Chair of IEEE MDM'10, VLDB's DMSN'10 and ACM MobiDE'09, the General Chair for ACM MobiDE'10, the Contest Chair of IEEE ICDM'10, the Organization Chair of HDMS'10, the Demo Co-Chair for IEEE MDM'13 and the Panel Co-Chair for IEEE MDM'14. Currently, he serves as the Workshops Co-Chair for IEEE MDM'15. His primary research interests include Data Management in Computer Systems and Networks, in particular Mobile and Sensor Data Management; Big Data Management in Parallel and Distributed Architectures; Spatio-Temporal Data Management; Network and Web 2.0 Data Management; Crowd and Indoor Data Management; Data Privacy Management. He is a member of ACM, IEEE and USENIX. For more information, please visit:

  Mailing List:

Sponsor: The CS Colloquium Series is supported by a generous donation from Microsoft