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Date: 10-4-2021
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The Zipf distribution, sometimes referred to as the zeta distribution, is a discrete distribution commonly used in linguistics, insurance, and the modelling of rare events. It has probability density function
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(1) |
where is a positive parameter and
is the Riemann zeta function, and distribution function
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(2) |
where is a generalized harmonic number.
The Zipf distribution is implemented in the Wolfram Language as ZipfDistribution[rho].
The th raw moment is
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(3) |
giving the mean and variance as
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(4) |
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(5) |
The distribution has mean deviation
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(6) |
where is a Hurwitz zeta function and
is the mean as given above in equation (4).
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دخلت غرفة فنسيت ماذا تريد من داخلها.. خبير يفسر الحالة
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ثورة طبية.. ابتكار أصغر جهاز لتنظيم ضربات القلب في العالم
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شعبة التوجيه الديني النسوي تنظم مسابقة ميدانية لزائرات مرقد أبي الفضل العباس (عليه السلام)
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