Façonner sa dame: amour et idolâtrie

The 'lady as idol' is a cliche of troubadour poetry, and of courtly love in general. Moving beyond the psychoanalytical theories of desire that have informed troubadour studies in the past few decades, this article examines a selection of poems by the troubadour Jausbert de Poicibot, as well as their well-known illustrations in one 14th-c. manuscript, in order to explore how the complex medieval understanding of idolatry interacted with that of "fin'amor".

abctools: an R package for tuning approximate Bayesian computation analyses

Approximate Bayesian computation (ABC) is a popular family of algorithms which perform approximate parameter inference when numerical evaluation of the likelihood function is not possible but data can be simulated from the model. They return a sample of parameter values which produce simulations close to the observed dataset. A standard approach is to reduce the simulated and observed datasets to vectors of summary statistics and accept when the difference between these is below a specified threshold. ABC can also be adapted to perform model choice. In this article, we present a new software package for R, abctools which provides methods for tuning ABC algorithms. This includes recent dimension reduction algorithms to tune the choice of summary statistics, and coverage methods to tune the choice of threshold. We provide several illustrations of these routines on applications taken from the ABC literature.