@techreport{NBERw14349,
 title = "Real-Time Measurement of Business Conditions",
 author = "S. Boragan Aruoba and Francis X. Diebold and Chiara Scotti",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "14349",
 year = "2008",
 month = "September",
 URL = "http://www.nber.org/papers/w14349",
 abstract = {We construct a framework for measuring economic activity at high frequency, potentially in real time. We use a variety of stock and flow data observed at mixed frequencies (including very high frequencies), and we use a dynamic factor model that permits exact filtering. We illustrate the framework in a prototype empirical example and a simulation study calibrated to the example.},
}