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Publication
502views
15 years 3 months ago
Spatio-Temporal Histograms
This paper presents a framework for building and continuously maintaining spatio-temporal histograms (ST-Histograms, for short). ST-Histograms are used for selectivity estimation o...
Hicham G. Elmongui, Mohamed F. Mokbel, Walid G. Ar...

Publication
819views
15 years 3 months ago
Continuous Query Processing of Spatio-temporal Data Streams in PLACE
The tremendous increase in the use of cellular phones, GPS-like devices, and RFIDs results in highly dynamic environments where objects as well as queries are continuously moving. ...
Mohamed F. Mokbel, Xiaopeng Xiong, Moustafa A. Ham...

Publication
394views
15 years 3 months ago
SEA-CNN: Scalable Processing of Continuous K-Nearest Neighbor Queries in Spatio-temporal Databases
Location-aware environments are characterized by a large number of objects and a large number of continuous queries. Both the objects and continuous queries may change their locati...
Xiaopeng Xiong, Mohamed F. Mokbel, Walid G. Aref

Publication
311views
15 years 3 months ago
Towards Privacy-Aware Location-Based Database Servers
The wide spread of location-based services results in a strong market for location-detection devices (e.g., GPS-like devices, RFIDs, handheld devices, and cellular phones). Example...
Mohamed F. Mokbel

Publication
277views
15 years 3 months ago
LUGrid: Update-tolerant Grid-based Indexing for Moving Objects
Indexing moving objects is a fundamental issue in spatiotemporal databases. In this paper, we propose an adaptive Lazy-Update Grid-based index (LUGrid, for short) that minimizes th...
Xiaopeng Xiong, Mohamed F. Mokbel, Walid G. Aref