In this article, the lambdagram, proposed by Yule in his last time series paper published in 1945, is revisited using modern theoretical and computational developments unavailable to him. Although it is not particularly good at identifying stationary processes, the lambdagram is found to be much...

The recent volatile behaviour of U.K. inflation has been officially attributed to a sequence of 'unusual' price changes, prompting renewed interest in the construction of measures of 'core inflation', from which such unusual price changes may be down-weighted or even excluded. This paper...