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Economists Weifeng Zhong and Julian TszKin Chan developed a machine learning algorithm to “read” China’s official newspaper — the People’s Daily — and predict its policy changes using only the information in that newspaper. The output of this algorithm, the Policy Change Index (PCI) for China, is a leading indicator of the actual policy changes in China since 1951.

If you are interested in staying up-to-date with this developing project, including the PCIs for other countries besides China, please subscribe to the PCI Newsletter (delivered to your inbox once a month).