optimal polyphase merge


Definition: A polyphase merge which seeks to minimize the number of merge passes by allocating output runs of each pass to the various output files. Since polyphase merging must have a different number of runs in each file to be efficient, one seeks the optimal way of selecting how many runs go into each output file. A series of kth order Fibonacci numbers is one way to select the number of runs.

See also merge, polyphase merge, optimal merge.

Author: ASK

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Entry modified 17 December 2004.
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Cite this as:
Art S. Kagel, "optimal polyphase merge", in Dictionary of Algorithms and Data Structures [online], Paul E. Black, ed. 17 December 2004. (accessed TODAY) Available from: