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  2. List scheduling - Wikipedia

    en.wikipedia.org/wiki/List_scheduling

    2, 4, 9; 2, 4; 2, 4; and the makespan is 15. Adding a machine has enlarged the makespan. The anomalies are bounded as follows. Suppose initially we had m 1 machines and the makespan was t 1. Now, we have m 2 machines, the dependencies are the same or relaxed, the job lengths are the same or shorter, the list is the same or different, and the ...

  3. Approximate counting algorithm - Wikipedia

    en.wikipedia.org/wiki/Approximate_counting_algorithm

    For example, in base 2, the counter can estimate the count to be 1, 2, 4, 8, 16, 32, and all of the powers of two. The memory requirement is simply to hold the exponent . As an example, to increment from 4 to 8, a pseudo-random number would be generated such that the probability the counter is increased is 0.25.

  4. Counting sort - Wikipedia

    en.wikipedia.org/wiki/Counting_sort

    Bucket sort may be used in lieu of counting sort, and entails a similar time analysis. However, compared to counting sort, bucket sort requires linked lists, dynamic arrays, or a large amount of pre-allocated memory to hold the sets of items within each bucket, whereas counting sort stores a single number (the count of items) per bucket. [4]

  5. Forward–backward algorithm - Wikipedia

    en.wikipedia.org/wiki/Forward–backward_algorithm

    The forward–backward algorithm runs with time complexity () in space (), where is the length of the time sequence and is the number of symbols in the state alphabet. [1] The algorithm can also run in constant space with time complexity O ( S 2 T 2 ) {\displaystyle O(S^{2}T^{2})} by recomputing values at each step. [ 2 ]

  6. List of algorithms - Wikipedia

    en.wikipedia.org/wiki/List_of_algorithms

    An algorithm is fundamentally a set of rules or defined procedures that is typically designed and used to solve a specific problem or a broad set of problems.. Broadly, algorithms define process(es), sets of rules, or methodologies that are to be followed in calculations, data processing, data mining, pattern recognition, automated reasoning or other problem-solving operations.

  7. Countdown - Wikipedia

    en.wikipedia.org/wiki/Countdown

    In the context of a rocket launch, the "L minus Time" is the physical time before launch, e.g. "L minus 3 minutes and 40 seconds". "T minus Time" is a system to mark points at which actions necessary for the launch are planned - this time stops and starts as various hold points are entered, and so doesn't show the actual time to launch.

  8. PyPy - Wikipedia

    en.wikipedia.org/wiki/PyPy

    On 21 March 2017, the PyPy project released version 5.7 of both PyPy and PyPy3, with the latter introducing beta-quality support for Python 3.5. [24] On 26 April 2018, version 6.0 was released, with support for Python 2.7 and 3.5 (still beta-quality on Windows). [25] On 11 February 2019, version 7.0 was released, with support for Python 2.7 and ...

  9. Bit-reversal permutation - Wikipedia

    en.wikipedia.org/wiki/Bit-reversal_permutation

    [2] [10] An alternative to these techniques is special computer hardware that allows memory to be accessed both in normal and in bit-reversed order. [ 12 ] The performance improvement of bit-reversals in both uniprocessor and multiprocessors has been paid a serious attention in high-performance computing fields.