Self-organizing maps (SOM) are widely used for their topology preservation property: neighboring input vectors are quantified (or classified) either on the same location either on neighboring ones on a predefined grid. But SOM are also widely used for their more classical vector quantization...

Le papier se propose d'étudier la dynamique du marché du travail, en cherchant à caractériser des équilibres dynamiques et des trajectoires possibles. L'arrière-plan théorique est la théorie du marché du travail segmenté. L'idée est que cette théorie est particulièrement bien...

Pseudo panels constituted with repeated cross-sections are good substitutes to true panel data. But individuals grouped in a cohort are not the same for successive periods, and it results in a measurement error and inconsistent estimators. The solution is to constitute cohorts of large numbers...

In France, for administrative reasons, unemployed workers may actually be involved in occasional work while remaining identified as unemployed (and receiving the corresponding benefit). This is due to the fact that the unemployed are deemed to be seeking full-time jobs and non-fixed term...