As the world¡¯s top central bankers gather in Wyoming this week, their relief about a stronger global economy will be tempered by a growing unease that inflation remains inexplicably low.

Federal Reserve Chairwoman Janet Yellen and European Central Bank President Mario Draghi will be among the officials addressing this year¡¯s installment of the annual conference hosted by the Kansas City Fed.

The summit, held at a Jackson Hole mountain retreat, comes as central banks in advanced economies creep toward the policy exit after years of unprecedented easing, even with outlooks clouded by stubbornly tepid inflation.