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  2. Random number generation - Wikipedia

    en.wikipedia.org/wiki/Random_number_generation

    When a cubical die is rolled, a random number from 1 to 6 is obtained. Random number generation is a process by which, often by means of a random number generator ( RNG ), a sequence of numbers or symbols that cannot be reasonably predicted better than by random chance is generated. This means that the particular outcome sequence will contain ...

  3. Closest pair of points problem - Wikipedia

    en.wikipedia.org/wiki/Closest_pair_of_points_problem

    The closest pair of points problem or closest pair problem is a problem of computational geometry: given points in metric space, find a pair of points with the smallest distance between them. The closest pair problem for points in the Euclidean plane [1] was among the first geometric problems that were treated at the origins of the systematic ...

  4. STR analysis - Wikipedia

    en.wikipedia.org/wiki/STR_analysis

    Short tandem repeat (STR) analysis is a common molecular biology method used to compare allele repeats at specific loci in DNA between two or more samples. A short tandem repeat is a microsatellite with repeat units that are 2 to 7 base pairs in length, with the number of repeats varying among individuals, making STRs effective for human ...

  5. Copy number variation - Wikipedia

    en.wikipedia.org/wiki/Copy_number_variation

    Copy number variation is a type of structural variation: specifically, it is a type of duplication or deletion event that affects a considerable number of base pairs. [2] Approximately two-thirds of the entire human genome may be composed of repeats [3] and 4.8–9.5% of the human genome can be classified as copy number variations. [4]

  6. Permutation - Wikipedia

    en.wikipedia.org/wiki/Permutation

    Sometimes an inversion is defined as the pair of values (σ(i), σ(j)); this makes no difference for the number of inversions, and the reverse pair (σ(j), σ(i)) is an inversion in the above sense for the inverse permutation σ −1.

  7. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    Header file of a .hdr/.img pair in NIfTI format, used extensively in biomedical imaging. 52 41 46 36 34: RAF64: 0 Report Builder file from Digital Metaphors: 56 49 53 33: VIS3: 0 Resource file Visionaire 3.x Engine: 4D 53 48 7C 42 53 48 7C: MSH| BSH| 0 hl7 Health Level Seven (HL7) Standard for electronic data exchange : 70 77 72 64 61 74 61 ...

  8. Frequency - Wikipedia

    en.wikipedia.org/wiki/Frequency

    f = 1 / T. Dimension. T − 1 {\displaystyle {\mathsf {T}}^ {-1}} Frequency (symbol f ), most often measured in hertz (symbol: Hz), is the number of occurrences of a repeating event per unit of time. [1] It is also occasionally referred to as temporal frequency for clarity and to distinguish it from spatial frequency.

  9. Inverted repeat - Wikipedia

    en.wikipedia.org/wiki/Inverted_repeat

    An inverted repeat (or IR) is a single stranded sequence of nucleotides followed downstream by its reverse complement. [1] The intervening sequence of nucleotides between the initial sequence and the reverse complement can be any length including zero. For example, 5'---TTACGnnnnnnCGTAA---3' is an inverted repeat sequence.