team_name: European Centre for Disease Prevention and Control model_name: Norrsken Piecewise Linear Bayesian Model model_abbr: ECDC-norrsken_green model_contributors: - name: ECDC Mathematical Modelling Team affiliation: European Centre for Disease Prevention and Control email: modellingh@ecdc.europa.eu data_inputs: ECDC ERVISS website_url: https://github.com/EU-ECDC/ECDC-Mathematical-Models license: cc-by-4.0 team_model_designation: primary methods: "A Bayesian piece-wise log-linear model fit." methods_long: "Model consists of 1) scaling of the data (convert to log-scale), 2) assigning data points into groups such that neighbouring data points belong to the same group, and simultaneously in Stan 3) fitting piece-wise intercept-slope models in each group, 4) regularizing the difference between neighbouring slopes to be close to 0, 5) generating a future slope based on the last slope plus fitted noise."