text:  Marketplace Morning Report is supported by The Economist, devoted to providing independent journalism that makes sense of the news shaping the world. More at Economist.com or with The Economist app, newsletters, and podcasts. I'm David Brancaccio in New York. There's a new economic indicator in town. This one analyzes the U.S. economy in real time, and it's powered by artificial intelligence. Marketplace's Nancy Marshall-Genzer has some details.