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» Bounds on generalized Frobenius numbers
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ORDER
2008
61views more  ORDER 2008»
13 years 9 months ago
Partitioning Posets
Given a poset P = (X, ), a partition X1, . . . , Xk of X is called an ordered partition of P if, whenever x Xi and y Xj with x y, then i j. In this paper, we show that for ever...
Viresh Patel
STOC
2010
ACM
168views Algorithms» more  STOC 2010»
14 years 6 months ago
Non-commutative circuits and the sum-of-squares problem
We initiate a direction for proving lower bounds on the size of non-commutative arithmetic circuits. This direction is based on a connection between lower bounds on the size of no...
Pavel Hrubes, Avi Wigderson and Amir Yehudayoff
WADS
2005
Springer
149views Algorithms» more  WADS 2005»
14 years 2 months ago
Balanced Aspect Ratio Trees Revisited
Spatial databases support a variety of geometric queries on point data such as range searches, nearest neighbor searches, etc. Balanced Aspect Ratio (BAR) trees are hierarchical sp...
Amitabh Chaudhary, Michael T. Goodrich
DATE
2010
IEEE
139views Hardware» more  DATE 2010»
14 years 2 months ago
Constant-time admission control for Deadline Monotonic tasks
—The admission control problem is concerned with determining whether a new task may be accepted by a system consisting of a set of running tasks, such that the already admitted a...
Alejandro Masrur, Samarjit Chakraborty, Georg F&au...
ICDT
2001
ACM
131views Database» more  ICDT 2001»
14 years 1 months ago
Query Evaluation via Tree-Decompositions
A number of efficient methods for evaluating first-order and monadic-second order queries on finite relational structures are based on tree-decompositions of structures or quer...
Jörg Flum, Markus Frick, Martin Grohe