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  2. NaN - Wikipedia

    en.wikipedia.org/wiki/NaN

    In the IEEE 754 binary interchange formats, NaNs are encoded with the exponent field filled with ones (like infinity values), and some non-zero number in the trailing significand field (to make them distinct from infinity values); this allows the definition of multiple distinct NaN values, depending on which bits are set in the trailing ...

  3. Feature scaling - Wikipedia

    en.wikipedia.org/wiki/Feature_scaling

    In machine learning, we can handle various types of data, e.g. audio signals and pixel values for image data, and this data can include multiple dimensions. Feature standardization makes the values of each feature in the data have zero-mean (when subtracting the mean in the numerator) and unit-variance.

  4. Division by zero - Wikipedia

    en.wikipedia.org/wiki/Division_by_zero

    A NaN (not a number) value represents undefined results. In IEEE arithmetic, division of 0/0 or ∞/∞ results in NaN, but otherwise division always produces a well-defined result. Dividing any non-zero number by positive zero (+0) results in an infinity of the same sign as the dividend.

  5. NAND gate - Wikipedia

    en.wikipedia.org/wiki/NAND_gate

    The basic implementations can be understood from the image on the left below: If either of the switches S1 or S2 is open, the pull-up resistor R will set the output signal Q to 1 (high). If S1 and S2 are both closed, the pull-up resistor will be overridden by the switches, and the output will be 0 (low).

  6. Boolean data type - Wikipedia

    en.wikipedia.org/wiki/Boolean_data_type

    The number 0, the strings "0" and "", the empty list (), and the special value undef evaluate to false. [8] All else evaluates to true. Lua has a Boolean data type, but non-Boolean values can also behave as Booleans. The non-value nil evaluates to false, whereas every other data type

  7. Wikipedia:Deleted articles with freaky titles - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Deleted_articles...

    A small note of explanation is OK, but please do not sign it – this isn't a talk page. This is for articles or redirects that really existed on Wikipedia which have been deleted – provide proof of the deletion if you can, generally in the form of an XFD discussion page (AFD debates can be quite humorous themselves) or deletion log entry (for articles deleted before December 2004; see also ...

  8. Ordinary least squares - Wikipedia

    en.wikipedia.org/wiki/Ordinary_least_squares

    In statistics, ordinary least squares (OLS) is a type of linear least squares method for choosing the unknown parameters in a linear regression model (with fixed level-one [clarification needed] effects of a linear function of a set of explanatory variables) by the principle of least squares: minimizing the sum of the squares of the differences between the observed dependent variable (values ...

  9. The Brady Bunch - Wikipedia

    en.wikipedia.org/wiki/The_Brady_Bunch

    The box art for this set features green shag carpeting and 1970s-style wood paneling. 8 years later on April 7, 2015, CBS Home Entertainment and Paramount Home Entertainment re-released the complete series box set, a repackaged version at a lower price, but it does not include the bonus disc that was part of the original complete series release.