Estimating the NAIRU for Australia based on RBA Bulletin June Quarter 2017 Cuthbert using R and Stan https://www.rba.gov.au/publications/bulletin/2017/jun/pdf/bu-0617-2-estimating-the-nairu-and-the-unemployment-gap.pdf
_Calibrate imposes the coefficients in the RBA Bulletin article, without the _calibrate estimates the parameters.