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» Hardness Results and Efficient Algorithms for Graph Powers
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BNCOD
2009
145views Database» more  BNCOD 2009»
15 years 27 days ago
A Study of a Positive Fragment of Path Queries: Expressiveness, Normal Form, and Minimization
We study the expressiveness of a positive fragment of path queries, denoted Path+ , on node-labeled trees documents. The expressiveness of Path+ is studied from two angles. First, ...
Yuqing Wu, Dirk Van Gucht, Marc Gyssens, Jan Pared...
JSAC
2010
146views more  JSAC 2010»
14 years 6 months ago
NLOS identification and mitigation for localization based on UWB experimental data
Abstract--Sensor networks can benefit greatly from locationawareness, since it allows information gathered by the sensors to be tied to their physical locations. Ultra-wide bandwid...
Stefano Maranò, Wesley M. Gifford, Henk Wym...
CORR
2010
Springer
102views Education» more  CORR 2010»
14 years 12 months ago
Structure of random r-SAT below the pure literal threshold
It is well known that there is a sharp density threshold for a random r-SAT formula to be satisfiable, and a similar, smaller, threshold for it to be satisfied by the pure literal ...
Alexander D. Scott, Gregory B. Sorkin
ICDE
2004
IEEE
101views Database» more  ICDE 2004»
16 years 1 months ago
Personalization of Queries in Database Systems
As information becomes available in increasing amounts to a wide spectrum of users, the need for a shift towards a more user-centered information access paradigm arises. We develo...
Georgia Koutrika, Yannis E. Ioannidis
VLSID
2002
IEEE
94views VLSI» more  VLSID 2002»
16 years 5 days ago
A Unified Method to Handle Different Kinds of Placement Constraints in Floorplan Design
In floorplan design, it is common that a designer will want to control the positions of some modules in the final packing for various purposes like data path alignment, I/O connec...
Evangeline F. Y. Young, Chris C. N. Chu, M. L. Ho