Performance comparison of extendible hashing and linear hashing techniques
Ashok Rathi, Huizhu Lu, G. E. Hedrick
Abstract
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Ashok Rathi, Huizhu Lu, G. E. Hedrick
Abstract
Open-access reader
Based on seven assumptions, the following comparison factors are used to compare the performance of linear hashing with extendible hashing: 1. storage utilization; 2. average unsuccessful search cost; 3. average successful search cost; 4. split cost; 5. insertion cost; 6. number of overflow buckets. The simulation is conducted with the bucket sizes of 10, 20, and 50 for both hashing techniques. In order to observe their average behavior, the simulation uses 50,000 keys which have been generated randomly.
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Based on seven assumptions, the following comparison factors are used to compare the performance of linear hashing with extendible hashing: 1. storage utilization; 2. average unsuccessful search cost; 3. average successful search cost; 4. split cost; 5. insertion cost; 6. number of overflow buckets. The simulation is conducted with the bucket sizes of 10, 20, and 50 for both hashing techniques. In order to observe their average behavior, the simulation uses 50,000 keys which have been generated randomly.
Key concepts: Dynamic perfect hashing, Hash function, Consistent hashing, Linear hashing, Computer science, Hash table, Universal hashing, K-independent hashing