TY - GEN
T1 - Explicit construction of a small epsilon-net for linear threshold functions
AU - Rabani, Yuval
AU - Shpilka, Amir
PY - 2009
Y1 - 2009
N2 - We give explicit constructions of epsilon nets for linear threshold functions on the binary cube and on the unit sphere. The size of the constructed nets is polynomial in the dimension n and in 1/ε . To the best of our knowledge no such constructions were previously known. Our results match, up to the exponent of the polynomial, the bounds that are achieved by probabilistic arguments. As a corollary we also construct subsets of the binary cube that have size polynomial in n and covering radius of n/2 - c√n log n, for any constant c. This improves upon the well known construction of dual BCH codes that only guarantee covering radius of n/2 - c√n.
AB - We give explicit constructions of epsilon nets for linear threshold functions on the binary cube and on the unit sphere. The size of the constructed nets is polynomial in the dimension n and in 1/ε . To the best of our knowledge no such constructions were previously known. Our results match, up to the exponent of the polynomial, the bounds that are achieved by probabilistic arguments. As a corollary we also construct subsets of the binary cube that have size polynomial in n and covering radius of n/2 - c√n log n, for any constant c. This improves upon the well known construction of dual BCH codes that only guarantee covering radius of n/2 - c√n.
KW - Epsilon-net
KW - Explicit construction
KW - Linear threshold function
UR - http://www.scopus.com/inward/record.url?scp=70350694417&partnerID=8YFLogxK
U2 - 10.1145/1536414.1536502
DO - 10.1145/1536414.1536502
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AN - SCOPUS:70350694417
SN - 9781605585062
T3 - Proceedings of the Annual ACM Symposium on Theory of Computing
SP - 649
EP - 658
BT - STOC'09 - Proceedings of the 2009 ACM International Symposium on Theory of Computing
T2 - 41st Annual ACM Symposium on Theory of Computing, STOC '09
Y2 - 31 May 2009 through 2 June 2009
ER -