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Methods of Randomization of Large Files with High Volatility

Patrick C. Mitchell, Thomas K. Burgess

Abstract


Key-to-address conversion algorithms which have been used for a large, direct access file are compared with respect to record density and access time. Cumulative distribution functions are plotted to demonstrate the distribution of addresses generated by each method. The long-standing practice of counting address collisions is shown to be less valuable in fudging algorithm effectiveness than considering the maximum number of contiguously occupied file locations.


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DOI: https://doi.org/10.6017/ital.v3i1.5128

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License URL: http://creativecommons.org/licenses/by/3.0/

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ISSN:2163-5226

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