# Archiv der Kategorie Uncategorized

## The Bayesian and the Frequentist – II

This is not immediately related to Bayesian statistics. But it is a good argument for the frequentistic approach. I met the problem in  a Youtube video, but the core of this problem is well known. The solutions are not always … Weiterlesen

20. Juli 2016 von mga010
Kategorien: Euler, Uncategorized | Schreibe einen Kommentar

## A Problem of Logic

The Problem Recently, I stumbled across a very interesting problem. I closed the site and started to think about the solution. Therefore, I neither have a link nor the solution given on the page. Let us try our luck with … Weiterlesen

12. Juli 2016 von mga010
Kategorien: English, Uncategorized | Schreibe einen Kommentar

## The Bayesian and the Frequentist – I

I think I write a series of postings about Bayesian statistics and the view that I take on it as a frequentist. Do not expect too much depth here. I am not a specialist in statistics. I just want to study … Weiterlesen

12. Juni 2016 von mga010
Kategorien: Uncategorized | Schreibe einen Kommentar

## Numerical versus Symbolic Solutions

I did a short video about symbolic solutions versus numerical methods. The point is that a solution such as $$x=\left(\frac{\sqrt{5339}}{8\,3^{\frac{3}{2}}}+\frac{379}{216}\right)^{\frac{1}{3}}-\dfrac{2}{9\,\left(\frac{\sqrt{5339}}{8\,3^{\frac{3}{2}}}+\frac{379}{216}\right)^{\frac{1}{3}}}-\dfrac{1}{3}$$ are not helpful, unless you are a number theorist. The solutions of equations of degree 5 are usually not available … Weiterlesen

03. November 2015 von mga010
Kategorien: Uncategorized | Schreibe einen Kommentar

## Floating Point Arithmetic – Youtube Video

I demonstrate floating point arithmetic and big floats in this video on Youtube. I will continue this in a series with videos about EMT.

02. November 2015 von mga010
Kategorien: Uncategorized | Schreibe einen Kommentar

## Minimize the Surface of a Cubuid

The problem I discuss in this blog post is from the nice page by Dan Meyer. The blog is interesting anyway because of the way Dan thinks about teaching. The concept „less helpful“ says it all. I was sometimes asked … Weiterlesen

28. September 2015 von mga010
Kategorien: Uncategorized | Schreibe einen Kommentar

## Visualizing the Newton Algorithm in the Plane

Continuing my last blog entry, let us try the Newton Algorithm with two variables. First we define the function f(x,y). We use an example where we know the zeros exactly. $$f(x,y) = (x+iy)^3-1.$$ The zeros are the three roots of … Weiterlesen

21. September 2015 von mga010
Kategorien: Uncategorized | Schreibe einen Kommentar

## Experiences with Scilab – 3

Let us try differential equations. We want to solve the following problem. $$y“ = -g + k |y’|^a, \quad y(0)=h.$$ This simulates a falling body with friction. We want to know, when the body hits the ground. After reformulating the … Weiterlesen

31. Dezember 2014 von mga010
Kategorien: English, Euler, Uncategorized | Schreibe einen Kommentar

## Review of a Course at the Iversity

I recently followed a course about „Monte-Carlo methods in finance“ on Iversity done by Alberto Suaréz. I did that to learn about online courses in general and specifically at Iversity, to learn about the Black-Scholes model in finance and the fair … Weiterlesen

22. April 2014 von mga010
Kategorien: Uncategorized | Schreibe einen Kommentar

## Simulating Jumps in EMT

I promised to show how distributions with discrete jumps can be simulated. The easiest way is to use a fine granularity dt of time. If we assume that n events occur during a time length 1, then we get the … Weiterlesen

06. April 2014 von mga010
Kategorien: Uncategorized | Schreibe einen Kommentar

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