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DAM
2008
89views more  DAM 2008»
13 years 7 months ago
T-shift synchronization codes
In this paper we give a construction of T-shift synchronization codes, i.e. block codes capable of correcting synchronization shifts of length at most T in either direction (left ...
Rudolf Ahlswede, Bernhard Balkenhol, Christian Dep...
FOCI
2007
IEEE
14 years 1 months ago
Cardinality, Fuzziness, Variance and Skewness of Interval Type-2 Fuzzy Sets
Abstract— Centroid, cardinality, fuzziness, variance and skewness are all important concepts for an interval type-2 fuzzy set (IT2 FS) because they are all measures of uncertaint...
Jerry M. Mendel, Dongrui Wu
CIDR
2007
165views Algorithms» more  CIDR 2007»
13 years 9 months ago
A Black-Box Approach to Query Cardinality Estimation
We present a “black-box” approach to estimating query cardinality that has no knowledge of query execution plans and data distribution, yet provides accurate estimates. It doe...
Tanu Malik, Randal C. Burns, Nitesh V. Chawla
VLDB
2004
ACM
118views Database» more  VLDB 2004»
14 years 26 days ago
On the performance of bitmap indices for high cardinality attributes
It is well established that bitmap indices are efficient for read-only attributes with low attribute cardinalities. For an attribute with a high cardinality, the size of the bitma...
Kesheng Wu, Ekow J. Otoo, Arie Shoshani
VLDB
2004
ACM
93views Database» more  VLDB 2004»
14 years 26 days ago
Symmetric Relations and Cardinality-Bounded Multisets in Database Systems
In a binary symmetric relationship, A is related to B if and only if B is related to A. Symmetric relationships between k participating entities can be represented as multisets of...
Kenneth A. Ross, Julia Stoyanovich