Charlie Joyez
cjoyez.bsky.social
Charlie Joyez
@cjoyez.bsky.social
Assistant Prof at Université Côte d'Azur.
Economics & Network analysis.
Tiens, c'est marrant, le +21% c'est exactement l'inflation sur la période.
Donc en valeur réelle la SCSP n'a pas augmenté.
Alors que le nombre d'étudiants (boom naissance an 2000) oui.
June 12, 2025 at 2:09 PM
- increasingly structural

as Imports and Exports between them are less and less similar (the US concentrating its exports, notably toward oil, and buying traditional manufacturing)

Complexity of US exports to the EU is declining because of that. Could be concerning in the long run.
May 23, 2025 at 1:49 PM
The trade deficit the US run with the EU is :

- increasing since 2010 (x3)

-even higher when computed in Value Added
May 23, 2025 at 1:49 PM
Quand on pense que c'est le quotidien de référence de droite et qu'on voit ces erreurs... çafaitreflechir.

Il y a deux jours ils parlaient de cette élection comme d'une "primaire"...
May 18, 2025 at 6:00 PM
Pssst @lefigaro.fr il faut pas oublier de changer les légendes des photos hein.
May 18, 2025 at 5:54 PM
Pourtant ces données existent, on les retrouve dans certaines publications locales, comme ici en pour l'occitanie en 2017

occitanie.dreets.gouv.fr/sites/occita... (p.6)
May 15, 2025 at 8:44 AM
Alors que tous les économistes de la planète viennent de faire une leçon sur les déficits commerciaux depuis un mois, le gouvernement Français nous affiche un graphique "nous importons bien plus que nous exportons, et c'est autant que nous pourrions produire".

Mais??
April 15, 2025 at 12:02 PM
A new version of *complexity* Stata module is up on SSC.
Direct download from Stata : "ssc install complexity,replace"

Complexity computes indexes reflecting the sophistication of a specialization pattern, following www.pnas.org/doi/pdf/10.1... seminal paper.
March 16, 2025 at 2:33 PM
This is the product space with in blue products currently exported with a positive RCA by France, and in red, the targets (easily reachable & complex).

15/16
November 24, 2024 at 7:15 PM
Those 333 goods are mostly concentrated in nuclear, electrical and chemical industries.

14/16
November 24, 2024 at 7:15 PM
If we focus on France (ranked 13th in potential of accessible complexity), we identify 333 “targets”, that is products that are simultaneously Complex (more than average) and close to the products France already exports.

13/16
November 24, 2024 at 7:15 PM
I compute the complexity of countries, products, and following the above mentioned method the potential of “easy” or “reachable” complexity gain. It is highly correlated with the current complexity score.
Top 5 is Spain, India, Korea, Netherlands, and China. (See Alt for Germany outlying)

12/16
November 24, 2024 at 7:15 PM
As an example, I apply this using 2022 trade data from BACI (HSrev2017, 4 digits), with 159 countries and 1180 products.
The estimated Product Space is the following (using Force Atlas 2 algorithm in Gephi). We reach similar result to what was described in the seminal work of ECI.

11/16
November 24, 2024 at 7:15 PM
Therefore by knowing the given specialization of a country, you can map a countries’ position in the Product Space as done in the first edition of the Atlas of Economic Complexity (2013)

7/16
November 24, 2024 at 7:15 PM
An adjacent concept in this literature is the Product Space : a network of products, where the connections reflects the probability of the two products to be simultaneously exported with a comparative advantage. The higher the proximity of goods, the more likely they use the same set of capabilities
November 24, 2024 at 7:15 PM
First of all, “What you export matters” for your growth dynamic. I don’t think many people would argue with that, but Hausman et al. (2007) and & Hausmann (2009) explain it quite convincingly and provide metrics + empirical evidence of it.

2/16
November 24, 2024 at 7:15 PM