What's all this, then?
open-menu closeme
All posts
About
Home
Tags
github twitter linkedin facebook rss
  • Every academic their own text-matcher

    calendar Jun 19, 2022 · 8 min read · Python Education  ·
    Share on: twitter facebook linkedin copy

    Plagiarism, text matching, and academic integrity

    Every modern academic teacher is in thrall to giant text-matching systems such as Ouriginal or Turnitin. These systems are sold as "plagiarism detectors", which they are not - they are text matching systems, and they generally work by providing a report …


    Read More
  • More mapping "not quite how-to" - Voronoi regions

    calendar Jun 18, 2022 · 5 min read · Python GIS  ·
    Share on: twitter facebook linkedin copy

    What this post is about

    In the previous post we showed how to set up a simple interactive map using Python and its folium package. As the example, we used a Federal electorate situated within the city of Melbourne, Australia, and the various voting places, or polling places (also known as polling "booths") …


    Read More
  • A mapping "not quite how-to"

    calendar Jun 11, 2022 · 4 min read · Python GIS  ·
    Share on: twitter facebook linkedin copy

    Message about the underlying software

    NOTE: much of the material and discussion here uses the Python package "folium", which is a front end to the Javascript package "leaflet.js". The lead developer of leaflet.js is Volodymyr Agafonkin, a Ukrainian up until recently living and working in Kyiv.

    Leaflet version 1.80 was …


    Read More
  • Voting power (7): Quarreling voters

    calendar Jan 24, 2021 · 4 min read · voting algebra python  ·
    Share on: twitter facebook linkedin copy
    In all the previous discussions of voting power, we have assumed that all winning coalitions are equally likely. But in practice that is not necessarily the case. Two or more voters may be opposed on so many issues that they would never vote the same way on any issues: such a pair of voters may be said to be …
    Read More
  • Voting power (6): Polynomial rings

    calendar Jan 22, 2021 · 4 min read · voting algebra python  ·
    Share on: twitter facebook linkedin copy

    As we have seen previously, it's possible to compute power indices by means of polynomial generating functions. We shall extend previous examples to include the Deegan-Packel index, in a way somewhat different to that of Alonso-Meijide et al (see previous post for reference).

    Again, suppose we consider the voting game …


    Read More
  • Voting power (5): The Deegan-Packel and Holler power indices

    calendar Jan 14, 2021 · 5 min read · voting algebra python julia  ·
    Share on: twitter facebook linkedin copy

    We have explored the Banzhaf and Shapley-Shubik power indices, which both consider the ways in which any voter can be pivotal, or critical, or necessary, to a winning coalition.

    A more recent power index, which takes a different approach, was defined by Deegan and Packel in 1976, and considers only minimal winning …


    Read More
  • Speeds of Julia and Python

    calendar Dec 19, 2019 · 6 min read · programming python julia  ·
    Share on: twitter facebook linkedin copy

    Introduction

    Python is of course one of the world's currently most popular languages, and there are plenty of statistics to show it. Of all languages in current use, Python is one of the oldest (in the very quick time-scale of programming languages) dating from 1990 - only C and its variants are older. However, it …


    Read More
  • Fitting the SIR model of disease to data in Python

    calendar Aug 9, 2019 · 4 min read · mathematics computation python  ·
    Share on: twitter facebook linkedin copy

    Introduction and the problem

    The SIR model for spread of disease was first proposed in 1927 in a collection of three articles in the Proceedings of the Royal Society by Anderson Gray McKendrick and William Ogilvy Kermack; the resulting theory is known as Kermack–McKendrick theory; now considered a subclass of a more …


    Read More
  • Mapping voting gains between elections

    calendar Jul 21, 2019 · 4 min read · voting GIS python  ·
    Share on: twitter facebook linkedin copy

    So this goes back quite some time to the recent Australian Federal election on May 18. In my own electorate (known formally as a "Division") of Cooper, the Greens, who until recently had been showing signs of winning the seat, were pretty well trounced by Labor.

    Some background asides

    First, …


    Read More
  • Colonial massacres, 1794 to 1928

    calendar Jan 28, 2019 · 5 min read · history GIS python  ·
    Share on: twitter facebook linkedin copy
    The date January 26 is one of immense current debate in Australia. Officially it's the date of Australia Day, which supposedly celebrates the founding of Australia. To Aboriginal peoples it is a day of deep mourning and sadness, as the date commemorates over two centuries of oppression, bloodshed, and dispossession. …
    Read More
    • ««
    • «
    • 1
    • 2
    • »
    • »»

Recent Posts

  • Parabolas, numerically
  • Parameterization of the parabola
  • Four point parabolas
  • General expressions
  • Bicentric heptagons
  • Poncelet's porism on non-circular conic sections
  • Image dithering: a very simple error diffusion matrix
  • Image dithering: a very simple error diffusion matrix
  • Image dithering (2): error diffusion
  • Image dithering (1): half toning

Tags

MATHEMATICS 22 JULIA 16 VOTING 15 PYTHON 14 COMPUTATION 12 ALGEBRA 10 GIS 8 IMAGE-PROCESSING 5 GEOMETRY 4 JSXGRAPH 4 PROGRAMMING 4 CAD 3 LINEAR-PROGRAMMING 3 ANALYSIS 1 ASTRONOMY 1 CRYPTOGRAPHY 1 EDUCATION 1 GEOGEBRA 1 HASKELL 1 HISTORY 1 HUGO 1 HUMOUR 1 MUSIC 1 ORG 1 SCIENCE 1
What's all this, then?

Copyright  WHAT'S ALL THIS, THEN?. All Rights Reserved

to-top