RDP 2005-05: Underlying Inflation: Concepts, Measurement and Performance Equation

π ^ t = i = 1 N π i t σ ^ i 2 i = 1 N 1 σ ^ i 2 MathType@MTEF@5@5@+=feaagCart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLnhiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=xfr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGafqiWdaNbaKaadaqhaaWcbaGaamiDaaqaaiabgEHiQaaakiabg2da9maalaaabaWaaabCaeaadaWcaaqaaiabec8aWnaaBaaaleaacaWGPbGaamiDaaqabaaakeaacuaHdpWCgaqcamaaDaaaleaacaWGPbaabaGaaGOmaaaaaaaabaGaamyAaiabg2da9iaaigdaaeaacaWGobaaniabggHiLdaakeaadaaeWbqaamaalaaabaGaaGymaaqaaiqbeo8aZzaajaWaa0baaSqaaiaadMgaaeaacaaIYaaaaaaaaeaacaWGPbGaeyypa0JaaGymaaqaaiaad6eaa0GaeyyeIuoaaaaaaa@527B@