This paper proposes a new way of computing a coincident indicator for economic activity in France using data from business surveys. The results obtained show that the resulting indicator forecasts economic activity with a relatively high degree of accuracy before the release of actual data.
Link
http://econpapers.repec.org/scripts/redir.pl?u=http%3A%2F%2Fwww.imf.org%2Fexternal%2Fpubs%2Fft%2Fwp%2F2004%2Fwp0469.pdf;h=repec:imf:imfwpa:04/69