Digging in to Premise, and mentioned in a recent notable.
https://www.huffingtonpost.com/jon-hartley/the-success-of-monitoring_b_6875126.html
It’s rare to find academic economists in the Ivory Tower creating new technologies that generate waves of interest jointly from policymakers, Wall Street and Silicon Valley. Roberto Rigobon and Alberto Cavallo, two professors at the MIT Sloan School of Management, make an exception. Since 2006, the tandem academic team have been working diligently on “The Billion Prices Project“ (BPP), an initiative that gathers price data by scraping information from online retailers around the globe. The high-frequency price data from the internet is then aggregated to measure inflation on a daily basis, helping government officials, economists and investors learn macroeconomic trends in real time.
Using online prices, the BPP daily inflation indices cover more than 70 countries and use daily price fluctuations of over five million items sold in over 300 online retailers. Since inception, the BPP U.S. inflation index has moved reasonably closely with the U.S. Consumer Price Index (CPI), an inflation index published by the Bureau of Labor Statistics which tracks monthly data on the prices paid by urban consumers for a representative basket of goods. The CPI’s annual percentage change is used as one of the canonical measures of inflation alongside the PCE published by the Bureau of Economic Analysis that often runs 0.5% lower than annual change in CPI and is often used by the Fed in its inflation forecasting. As one of the most widely tracked macroeconomic indicators, the CPI is published monthly at a lag and doesn’t give policymakers and economists the same timeliness associated that real-time price indices like the BPP series can provide.