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This post was firstly submitted to the Applied Quantitative Investment Management group on LinkedIn. It illustrates a recipe implemented in Python package nnetsauce for time series forecasting uncertainty quantification (through simulation): sequential split conformal prediction + block bootstrap
Underlying algorithm:
- Split data into training set, calibration set and test set
- Obtain point forecast on calibration set
- Obtain calibrated residuals = point forecast on calibration set – true observation on calibration set
- Simulate calibrated residuals using block bootstrap
- Obtain Point forecast on test set
- Prediction = Calibrated residuals simulations + point forecast on test set
Interested in experimenting more? Here is a web app.
For more details, you can read (under review): https://www.researchgate.net/publication/379643443_Conformalized_predictive_simulations_for_univariate_time_series
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