# Questions tagged [numerical-methods]

Questions on numerical methods; methods for approximately solving various problems that often do not admit exact solutions. Such problems can be in various field. Numerical methods provide a way to solve problems quickly and easily compared to analytic solutions.

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### Accurate computation of log error function difference

For information-theoretic purposes I am interested in computing $f(a, b)=-\log_2\left(\text{erf}(b) - \text{erf}(a)\right)$ where $b > a$ and $\text{erf}$ is the error function. Out-of-the box ...
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### Newton's method algorithm for linear least squares

Section 4.5 Example: Linear Least Squares of the textbook Deep Learning by Goodfellow, Bengio, and Courville, says the following: Suppose we want to find the value of $\mathbf{x}$ that minimizes ...
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### Linear Least Squares In Matrix Form

if we are given a set of points $\{(x_i,y_i)\}$ and we are looking to fit a straight line $ax+b$ "as close" to the points as possible we are building a set of equations. One way is to take the ...
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