Decomposable combinatorial structures have been well studied and a systematic manner for determining generating function equations is well known. Attribute grammars have enhanced the study of context-free grammars by giving meaning to constructions. Delest and F edou 2] showed that attribute grammars extend to combinatorial structures, with applications to random generation. In a similar way, w...

OBJECTIVES To assess patients' preferences for psoriasis treatments and to identify the effect of sociodemographic and socioeconomic characteristics on these preferences. DESIGN A computer-based conjoint analysis experiment was conducted to analyze the preferences of individuals with moderate or severe psoriasis for outcome attributes (probability, magnitude, and duration of benefit, as well ...