Hervé Faye et l’Heure nationale

Jackknife Hervé Abdi ⋅

The jackknife or “leave one out” procedure is a cross-validation technique first developed by Quenouille to estimate the bias of an estimator. John Tukey then expanded the use of the jackknife to include variance estimation and tailored the name of jackknife because like a jackknife—a pocket knife akin to a Swiss army knife and typically used by boy scouts—this technique can be used as a “quick...

Hervé Le Bras: The Nature of Demography

The Nature of Demography by Hervé Le Bras, translated by Godfrey Rogers from the original French publication in 2005 (La démographie, Paris: Odille Jacob), is about change, as demonstrated by the title of the introduction: ‘the dynamics of change in demography’ (p. 1). On the one hand, measuring, modelling and understanding demographic changes at the individual and population level are regarded...

Éditorial: Education nationale

Hypertext Classification Diploma thesis Hervé

Web Directories have been historically collected and updated by hand but this method is unsatisfactory for three reasons: A team of Web Surfers maintaining such a database should face the gigantism of the World network. Its size would thus be incompatible with the economic constraints of startups. Even the biggest team would not be able to trace all the changes on the Web and to keep the databa...

Académie Nationale De Médecine

Interventions causing genome modifications that can be passed on to descendants have been prohibited in France since 1994. New methods, such as CRISPR-Cas9, have been developed, raising questions about their potential use on human germline cells and embryos. The only acceptable medical indication would be to prevent the transmission of a disease gene to the child. However, the necessary conditi...