Given two ordered trees S S and T T, the tree inclusion problem is to determine whether it is possible to obtain S S from T T by deleting nodes. Recently, this problem has been recognized as an important primitive in query processing for Ε½< Ε½ .< < <. structured text databases. In this paper we prese
A more efficient algorithm for lattice basis reduction
β Scribed by C.P Schnorr
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 763 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0196-6774
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π SIMILAR VOLUMES
In this paper we present an analogue of the lattice basis reduction algorithm of A.K. Lenstra, H.W. Lenstra and L. Lov~sz for the case of an indefinite non-degenerate symmetric bilinear form. The algorithm produces a reduced basis with similar size properties as in the Euclidean case. As an applicat
Recent simulations often use highly parallel machines with many processors, and they need many pseudorandom number generators with distinct parameter sets, and hence we need an effective fast assessment of the generator with a given parameter set. Linear generators over the two-element field are goo