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  2. Chargaff's rules - Wikipedia

    en.wikipedia.org/wiki/Chargaff's_rules

    Chargaff's second rule appears to be the consequence of a more complex parity rule: within a single strand of DNA any oligonucleotide (k-mer or n-gram; length ≤ 10) is present in equal numbers to its reverse complementary nucleotide. Because of the computational requirements this has not been verified in all genomes for all oligonucleotides.

  3. Help:Conditional expressions - Wikipedia

    en.wikipedia.org/wiki/Help:Conditional_expressions

    See also: the {{}} template. The #if function selects one of two alternatives based on the truth value of a test string. {{#if: test string | value if true | value if false}} As explained above, a string is considered true if it contains at least one non-whitespace character.

  4. Conditional entropy - Wikipedia

    en.wikipedia.org/wiki/Conditional_entropy

    where and denote the support sets of and .. Note: Here, the convention is that the expression ⁡ should be treated as being equal to zero. This is because ...

  5. 68–95–99.7 rule - Wikipedia

    en.wikipedia.org/wiki/68–95–99.7_rule

    In statistics, the 68–95–99.7 rule, also known as the empirical rule, and sometimes abbreviated 3sr or 3 σ, is a shorthand used to remember the percentage of values that lie within an interval estimate in a normal distribution: approximately 68%, 95%, and 99.7% of the values lie within one, two, and three standard deviations of the mean ...

  6. Secretary problem - Wikipedia

    en.wikipedia.org/wiki/Secretary_problem

    The cutoff rule (CR): Do not accept any of the first y applicants; thereafter, select the first encountered candidate (i.e., an applicant with relative rank 1). This rule has as a special case the optimal policy for the classical secretary problem for which y = r. Candidate count rule (CCR): Select the y-th encountered candidate. Note, that ...

  7. Why You May Want to Hold Off on Buying Splunk Stock — But Not ...

    www.aol.com/news/why-may-want-hold-off-140439765...

    Democratic presidential candidate Andrew Yang is fond of saying that technology is the oil of the new century. And part of that involves big data. Both a source of controversy and potential, tech ...

  8. p-value - Wikipedia

    en.wikipedia.org/wiki/P-value

    The more independent observations from the same probability distribution one has, the more accurate the test will be, and the higher the precision with which one will be able to determine the mean value and show that it is not equal to zero; but this will also increase the importance of evaluating the real-world or scientific relevance of this ...

  9. Sign function - Wikipedia

    en.wikipedia.org/wiki/Sign_function

    Its derivative is zero when is non-zero: (⁡) =. This follows from the differentiability of any constant function , for which the derivative is always zero on its domain of definition. The signum sgn ⁡ x {\displaystyle \operatorname {sgn} x} acts as a constant function when it is restricted to the negative open region x < 0 , {\displaystyle ...