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seen Aug 30 at 9:03

May
8
comment Rescaling, or finding logarithmic equivalent of exponential functions
This is the formula I'm actually working with: i.stack.imgur.com/f65Na.png As you can see, if we simplify all the $g_i(stuff)$ and just call it $g$, then this formula isn't exactly $e^x / (1 + e^x)$. It's more like $e^x / (1 + sum(different e^{g(x)s})$. And I'm thinking this isn't serving to properly normalize? Because it's possible that the $g(x)s$ end up negative... and so we might end up with something like $e^{-2} / ( 1 + e^{large number} )$, which may therefore produce a huge number...Am I right? I need the β values as coefficients to build weights for weighted least sq regression.
May
8
comment Rescaling, or finding logarithmic equivalent of exponential functions
One more question - this function - the logistic function, is used for "normalization", right?
May
7
accepted Rescaling, or finding logarithmic equivalent of exponential functions
May
7
comment Rescaling, or finding logarithmic equivalent of exponential functions
So does that mean that the functional values of expression $e^x / (1 + e^x)$ are likely to either be 0, or 1, or anywhere in between?
May
7
asked Rescaling, or finding logarithmic equivalent of exponential functions
May
2
asked Getting the upper and lower quartiles in data with an even number of observations, or where the quartile lands on a decimal number
Feb
20
comment Describing transformations using base vectors
The question said: "Reflection in y-axis"... doesn't that mean a reflection along the line of x=0?
Feb
20
asked Describing transformations using base vectors
Dec
19
awarded  Editor
Dec
19
revised what are the azimuths of the different views of this object?
added 1 characters in body
Dec
19
comment what are the azimuths of the different views of this object?
thanks! yes that was a mistake, it should have said it's incrementing by 45 degrees, not 30.
Dec
19
accepted what are the azimuths of the different views of this object?
Dec
19
asked what are the azimuths of the different views of this object?
Jun
17
accepted Binomial expansion of expression with numerator and denominator both linear equations of x
Jun
17
comment Binomial expansion of expression with numerator and denominator both linear equations of x
Thank you, I can open them up individually - but then what? So let's say I've opened up the numerator according to this expansion you just mentioned. Then I expand the denominator. Then do I multiply each term with each other, as in: (numerator_term_1 * denominator_term_1) + (numerator_term_2 * denominator_term_2) + ... uptil the 4th terms?
Jun
17
asked Binomial expansion of expression with numerator and denominator both linear equations of x
Feb
1
awarded  Scholar
Feb
1
accepted Prove that one of the roots of this cubic equation has the given coordinates
Feb
1
awarded  Supporter
Feb
1
awarded  Student