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polyphase merge sort造句

"polyphase merge sort"是什么意思   

例句與造句

  1. A tape-drive implementation of the polyphase merge sort was described in " The Art of Computer Programming ".
  2. The polyphase merge sort fixes this discrepancy by padding the actual distribution with imaginary " dummy runs " to simulate an ideal run distribution.
  3. This table roughly corresponds to the reduction factor per dataset moved tables shown in fig 3 and fig 4 of polyphase merge sort . pdf
  4. Consequently, the polyphase merge sort needs to be clever about the initial distribution of the input data's runs to the initial output files.
  5. In general, polyphase merge sort is better than ordinary merge sort when there are less than 8 files, while ordinary merge sort starts to become better at around 8 or more files.
  6. It's difficult to find polyphase merge sort in a sentence. 用polyphase merge sort造句挺難的
  7. For N less than 8 working files, a polyphase merge sort achieves a higher effective run count reduction factor by unevenly distributing sorted runs between N-1 working files ( explained in next section ).
  8. Using the run move count equation for the above examples : ordinary merge sort-> 16 x log2 ( 16 ) = 64, polyphase merge sort-> 17 x log2.73 ( 17 ) = 48.
  9. When the end of one of the N-1 working files is reached, then it becomes the new output file and what was the output file becomes one of the N-1 working input files, starting a new iteration of polyphase merge sort.
  10. A polyphase merge sort using 4 files will sort 17 single record runs in 4 iterations, but since each iteration but the last iteration only moves a fraction of the dataset, it only moves a total of 48 records in order to sort the dataset after the initial distribution.
  11. For a dataset consisting of 57 runs of 1 record each, then after the initial distribution, polyphase merge sort moves 232 records during the 6 iterations it takes to sort the dataset, for an overall reduction factor of 2.70 ( this is explained in more detail later ).

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