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math, Programming

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How do I calculate the normal vector of a line segment? [closed]

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. This question does not appear to be about ...

May 31, 2022
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math, Programming

IT Nursery

Why use softmax as opposed to standard normalization?

In the output layer of a neural network, it is typical to use the softmax function to approximate a probability distribution: This is ...

May 30, 2022
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How to scale down a range of numbers with a known min and max value

So I am trying to figure out how to take a range of numbers and scale the values down to fit a range. ...

May 21, 2022
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Generate a random point within a circle (uniformly)

I need to generate a uniformly random point within a circle of radius R. I realize that by just picking a uniformly random ...

May 20, 2022
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Why can’t decimal numbers be represented exactly in binary?

There have been several questions posted to SO about floating-point representation. For example, the decimal number 0.1 doesn’t have an exact binary representation, ...

May 16, 2022
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How to determine if a list of polygon points are in clockwise order?

Having a list of points, how do I find if they are in clockwise order? For example: point[0] = (5,0) point...

May 16, 2022
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What is “entropy and information gain”?

I am reading this book (NLTK) and it is confusing. Entropy is defined as: Entropy is the sum of the probability of each ...

May 12, 2022
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Calculate distance between 2 GPS coordinates

How do I calculate distance between two GPS coordinates (using latitude and longitude)? 31 Answers 31 Calculate the distance between two coordinates by ...

May 7, 2022
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Understanding “randomness”

I can’t get my head around this, which is more random? rand() OR: rand() * rand() I´m finding it a real brain teaser, ...

April 20, 2022
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Designing function f(f(n)) == -n

A question I got on my last interview: Design a function f, such that: f(f(n)) == -n Where n is a 32 bit ...

April 20, 2022
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