Japan's diffusion index of leading economic indicators for May was revised up to 70.0 from a preliminary 66.7 on a scale of 100, the government said on Thursday. The leading index, compiled using data such as the number of new job offers, consumer sentiment and Tokyo share prices, is taken to signal economic conditions for the next few months. A reading above 50 indicates an improvement ahead. The coincident index, which indicates current economic conditions, was also revised up to 70.0 from a preliminary 66.7.///