Why Wikipedia is good for the Economy - Trend Forecasting Through Wikipedia Editor Behavior

The more active Wikipedia Editors a country has, the better is the health of it's economy!

Different national cultures are reflected in Wikipedia editor behavior. In a hierarchical culture like Japan, there are a few senior Wikipedia editors who keep a tight rein on who is allowed to edit articles. In a more egalitarian culture like Sweden, a much higher percentage of active Wikipedia editors obtain the coveted Wikipedia Admin status.

In this project we find a relationship between intrasocial capital of countries and the structure of the Wikipedias of the matching European languages. In the context of the current economic crisis we compare success of an economy with the Wikipedia editor behavior of the corresponding country. The German, French, Italian, Polish, Dutch, Greek, Swedish, and Finnish languages are predominantly spoken in just the mother country, allowing for a one-to-one mapping between Wikipedia in that language and economy of the mother country. We obtained different metrics reflecting Wikipedia structure for each of these languages on July 5, 2012: total number of articles, total number of edits, the number of all users, and the number of active users (i.e. editors who have performed an edit in the last 30 days).

As our first measure of success of an economy we take intrasocial capital in the form of the corruption index by country from http://www.transparency.org/country. Scores range from 0 (highly corrupt) to 10 (very clean). As a second measure of success we take the sovereign credit default swap (CDS) rate the countries have to pay for 5-year protection on a default on their loans on July 5, 2012. The table above contains the basic numbers. For our comparisons, we normalize the Wikipedia metrics: total number of articles, total number of edits, the number of all users, and the number of active users are divided by the population of the country, to get the number of articles, total number of edits, number of all users, and number of active users per 1000 inhabitants per country.
The picture above visually illustrates the strong correlation between intrasocial capital measured through the corruption index, and the number of active Wikipedia users per 1000 inhabitants (WAusersNorm). The message is really strong: the more active Wikipedia editors a country has in proportion to its population, the less corrupt it is. The correlation table below confirms this picture for all measures we have been collecting.
The total number of Wikipedia articles (wikinorm), total number of edits (weditnorm), number of all users (wusernorm), and number of active users (wausernorm) per 1000 inhabitants per country are all significantly correlated with corruption. Even more, the number of active users (wausernorm) is correlated with the CDS rate. The more active Wikipedia editors a country has, the lower is the CDS rate the country’s central bank has to pay to protect its debts for the next 5 years.

Regressing the total number of Wikipedia articles (wikinorm), total number of edits (weditnorm), number of all users (wusernorm), and number of active users (wausernorm) against the dependent variable “corruption” leads to an adjusted R2 of 0.91 with the only predictor “wausernorm”. The same regression for the dependent variable CDS_rate leads to an adjusted R2 of 0.53 with the only predictor “wausernorm”. This means that 91% of the corruption in a country can be explained with the number of active Wikipedia editors. Similarly, 53% of the CDS rate of the country can be explained by the number of active Wikipedia editors. The key insight is as surprising as it is flattering for the most active Wikipedia editors: the higher the proportion of active Wikipedia editors in a country is, the less corrupt and the more financially stable is the country. This also leads to a clear recommendation for politicians: motivate your compatriots to become active Wikipedia editors!

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