R-tree: splits space with hierarchically nested, and possibly overlapping, boxes ... Moving objects probe the index to find the queries that they influence. YPK-CNN ...
The MV3R-Tree: A Spatio-Temporal Access Method for Timestamp and Interval Queries Yufei Tao and Dimitris Papadias Hong Kong University of Science and Technology
Yufei Tao , Dimitris Papadias , Jimeng Sun. Department of Computer Science ... picks the sub-tree incurring the minimum penalty (smallest MBR/VBR enlargement) ...
... Operations in Spatial Data Warehouses. Dimitris Papadias, Panos Kalnis, Jun Zhang and Yufei Tao ... The raw data provide the set of objects that fall in ...
Query selectivity. Query (I/O) cost. for any Lp metric. using a single method ... Regional distance join selectivity. Tao, Faloutsos, Papadias. 38. Target Problem ...
Stabbing the Sky: Efficient Skyline Computation over Sliding Windows. COMP9314 Lecture Notes ... Input: a set of points in d- dimensional space. Output: points ...
Continuous Intersection Joins Over Moving Objects Rui Zhang University of Melbourne Dan Lin Purdue University Kotagiri Ramamohanarao University of Melbourne
Department of Computer Science and Engineering, University of Minnesota ... How many cars are in ... What are the fast food restaurants within 3 miles ...
Title: Algorithms and Optimization Techniques for Complex Spatial Queries Author: dimitris Last modified by: dimitris Created Date: 7/11/2000 3:30:11 PM
Query through anonymous web surfing service. But user location may disclose identity ... Anonymous Spatial Queries', IEEE Transactions on Knowledge and Data ...
A Two-level Protocol to Answer Private Location-based Queries Roopa Vishwanathan Yan Huang [RoopaVishwanathan, huangyan]@unt.edu Computer Science and Engineering
Top-k and Skyline Computation in Database Systems Apostolos N. Papadopoulos Data Engineering Research Lab Department of Informatics, Aristotle University Thessaloniki ...
Bitmap-based Algorithm. B -tree-based Algorithm. They can return the first ... Both bitmap and tree-base returns ... Bitmap representation. Do (4,8) is a ...
Branch-and-Bound Skyline (BBS) state-of-the-art index-based method. utilize ... measure the number of page accesses on the B-tree (SUBSKY) and the R-tree (BBS) ...
Conferences. Fast dissemination is the biggest merit ... Conferences. Allowing revisions (e.g., rolling over some rejected papers to the same referees) ...
Each spatial object carries some sort of aggregate information (i.e., each ... streets in the north district) that carry aggregate information (i.e., number of ...
Department of Computer Science. Hong Kong University of Science and Technology. and ... approach to attain up-to-date information is to pose a new query to the server ...
Title: Introduction to Management of Spatial Streams Author: Kostas Patroumpas Last modified by: timos sellis Created Date: 8/20/2004 7:37:17 AM Document presentation ...
Transient frequency performance and wind ... We therefore studied the effect of ... Loss of large amounts of generation via two units at a single power plant; ...
Historical time query - Historical Synopsis. Future time query - Prediction Model. 5 ... Historical Synopsis. AMH maintains the current buckets. Past index ...
Hotels which are close to the beach and cheap. distance. price. x. x. x. x. x. x. x ... Cheap & close to the beach. SELECT * FROM Hotels. WHERE city = 'Nassau' ...
Private Queries in Location-Based Services: Anonymizers are Not Necessary. Kian Lee Tan1 ... Secure against any location-based attack. Future work. Further ...
... not assume any fixed type of movements. Otherwise, we miss the other types. ... How many past timestamps should be considered (f=5 captures all movements tested) ...
University of California, San Diego. Research Exam & Thesis Proposal. Vagelis ... XQuery ?[29], XML-QL ?[30] , Quilt ?[31] for $t in document('db.xml')/items ...
Director, National Institute for Space Research, Brazil. GIScience 2006, Munster, Germany ... In: Auto-Carto 13 Vol. 5. ACSM/ASPRS, Seattle, WA (1997) 11-22. ...
[KM00] Korn, F. and Muthukrishnan, S., Influence Set Based on Reverse Nearest Neighbor Queries. ... [KMS02] Korn, F., Muthukrishnan, S. and Srivastava, D. ...
However, adaptation of these algorithms to deal with the spatial properties can be applied. ... Properties. 13. Spatial Hash Join Designer's Choice ...
One of Bernstein's colleagues, Duane, recently published a paper about skyline query processing. ... (S) - stores the information about keywords at different ...
Matrix constellation. Unitary definition: Unitary space-time modulation ... Maximum energy. achieved. CMA for multi-user signal separation and equalization ...
You've got a car, numerous pieces of baggage, sports equipment, ... A geographic example ... Mental imagery is 'the mental invention or recreation of an ...
The phone uploads its GPS coordinates to the Mologogo server every few minutes. ... Offloads query processing tasks to mobile units. Distributed processing ...
The entry is inside the query window in which case all aggregate information is ... with 250 points (i.e. car positions) with Gaussian distribution; therefore the ...
Data Systems Group, UCF. Fall 2005. Outline. Introduction to Data Management in Mobile Computing. ... GPS: Global Positioning System. Accuracy: up to 3 meters or more. ...
... measures (e.g., number of cars in car-parks) in a region (e.g. ... Compute their scores and compare them with retrieved points in all previous iterations ...
Spatiotemporal databases deal with the same queries assuming, however, moving ... Here we consider low dimensional spaces (spatial and spatiotemporal databases) ...
So FUR-tree propose a new concept of updating R-tree, which is bottom ... FUR-tree stores the candidates whose circ-regions' radii are larger than a threshold ...
Instead of traditional 'cell phone tower triangulation' method, use AGPS (Assisted GPS) ... E911 (enhanced 911) service: locate any cell phone that dialed 911. ...
University of Illinois at Urbana-Champaign. VLDB 2006. 2. Outline. Introduction. Robust Index ... Organize tuples into R-tree and determine a threshold to prune ...
This lecture note has been modified from lecture note by Prof. Somchai ... Finite automaton for P = AABC' Design and Analysis of Computer Algorithm. 15. KMP Flow chart ...
What you never see but we assure you ... The Halo Approach ... The Halo place representation: A shallow hierarchy of spatial groupings: Zones Areas Positions ...
Join the largest hash partition with the corresponding disk partition of the other relation. ... design of a stream-join algorithm includes deciding. the ...
Most of the spatial database literature focuses on Euclidean spaces. ... returns the network distance dN(p1,p2) of two arbitrary points p1, p2 in the ...