FILE PHOTO: Federal Reserve Board building is pictured in Washington, U.S., March 19, 2019. REUTERS/Leah Millis//File Photo

WASHINGTON (Reuters) – In a machine learning study of Federal Reserve chiefs, former Chair Ben Bernanke had several news conferences when his answers were all judged to have been delivered with a positive emotional tone, former Chair Janet Yellen came the closest to neutral, and current Chair Jerome Powell had several outings rated all negative.

Here are some examples:

June 22, 2011, Bernanke, perfect positive: here

March 15, 2017, Yellen, close to neutral: here

July 31, 2019, Powell, perfect negative here

Reporting by Howard Schneider; Editing by Paul Simao

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