Sciweavers

10 search results - page 1 / 2
» Hash and Displace: Efficient Evaluation of Minimal Perfect H...
Sort
View
WWW
2007
ACM
14 years 5 months ago
GigaHash: scalable minimal perfect hashing for billions of urls
A minimal perfect function maps a static set of keys on to the range of integers {0,1,2, ... , - 1}. We present a scalable high performance algorithm based on random graphs for ...
Kumar Chellapilla, Anton Mityagin, Denis Xavier Ch...
SBBD
2008
256views Database» more  SBBD 2008»
13 years 6 months ago
Indexing Internal Memory with Minimal Perfect Hash Functions
A perfect hash function (PHF) is an injective function that maps keys from a set S to unique values, which are in turn used to index a hash table. Since no collisions occur, each k...
Fabiano C. Botelho, Hendrickson R. Langbehn, Guilh...
ICGA
2008
113views Optimization» more  ICGA 2008»
13 years 5 months ago
Move Generation with Perfect Hash Functions
We present two new perfect hashing schemes that can be used for efficient bitboard move generation for sliding pieces in chess-like board games without the need to use rotated bit...
Trevor I. Fenner, Mark Levene
ESA
2009
Springer
346views Algorithms» more  ESA 2009»
13 years 11 months ago
Hash, Displace, and Compress
A hash function h, i.e., a function from the set U of all keys to the range range [m] = {0, . . . , m − 1} is called a perfect hash function (PHF) for a subset S ⊆ U of size n ...
Djamal Belazzougui, Fabiano C. Botelho, Martin Die...