TY - INPR A1 - Schnorr, Claus Peter A1 - Euchner, Martin T1 - Lattice basis reduction : improved practical algorithms and solving subset sum problems N2 - We report on improved practical algorithms for lattice basis reduction. We propose a practical floating point version of theL3-algorithm of Lenstra, Lenstra, Lovász (1982). We present a variant of theL3-algorithm with "deep insertions" and a practical algorithm for block Korkin—Zolotarev reduction, a concept introduced by Schnorr (1987). Empirical tests show that the strongest of these algorithms solves almost all subset sum problems with up to 66 random weights of arbitrary bit length within at most a few hours on a UNISYS 6000/70 or within a couple of minutes on a SPARC1 + computer. KW - Lattice basis reduction KW - LLL-reduction KW - Korkin—Zolotarev reduction KW - Block Korkin—Zolotarev reduction KW - Shortest lattice vector problem KW - Subset sum problem KW - Low density subset sum algorithm KW - Knapsack problem KW - Stable reduction algorithm Y1 - 1993 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/4259 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30-12296 SN - 1436-4646 SN - 0025-5610 N1 - Erschienen in: Mathematical programming, 66.1994, Nr. 1-3, S. 181-199, doi:10.1007/BF01581144 SP - 1 EP - 27 ER -