Forecast Combination and Interpretability Using Random Subspace
Boris Kozyrev
IWH Discussion Papers,
No. 21,
2024
Abstract
This paper investigates forecast aggregation via the random subspace regressions method (RSM) and explores the potential link between RSM and the Shapley value decomposition (SVD) using the US GDP growth rates. This technique combination enables handling high-dimensional data and reveals the relative importance of each individual forecast. First, it is possible to enhance forecasting performance in certain practical instances by randomly selecting smaller subsets of individual forecasts and obtaining a new set of predictions based on a regression-based weighting scheme. The optimal value of selected individual forecasts is also empirically studied. Then, a connection between RSM and SVD is proposed, enabling the examination of each individual forecast’s contribution to the final prediction, even when there is a large number of forecasts. This approach is model-agnostic (can be applied to any set of predictions) and facilitates understanding of how the aggregated prediction is obtained based on individual forecasts, which is crucial for decision-makers.
Read article
Placement News
Placement News IWH-DPE graduate placements 2024: St Andrews and the Bank of England Eleonora Sfrappini from the Financial Markets department and Tommaso Bighelli from the…
See page
Past Events
Past Events 14. CompNet Annual Conference (Vilnius, 25-26 September 2025) The 14th CompNet Annual Conference, co-hosted with the Bank of Lithuania, took place on 25–26 September…
See page
6th CompNet Annual Conference
Innovation, firm size, productivity and imbalances in the age of de-globalization 6 th CompNet Annual Conference, June 29-30, 2017, European Commission, Brussels, Belgium As the…
See page
ProdTalks
CompNet ProdTalks CompNet ProdTalks is a monthly recurring 1.5 hour virtual event, two selected papers will be presented including presentation, discussion and Q&A. The top ic…
See page
2020 Annual Conference of the OECD Global Forum of Productivity
2020 Annual Conference of the OECD Global Forum of Productivity This year CompNet celebrates its 10th Annual Conference, together with Banque de France as co-host, which will…
See page
European Data Workshop in Paris
European Data Workshop in Paris 15 - 16 June 2023 While micro-data are becoming more and more important, there are several challenges related to access to such data. The most…
See page
Virtual Conference on Sustainable development, firm performance and competitiveness policies in small open economies
Virtual Conference on Sustainable development, firm performance and competitiveness policies in small open economies This Conference has been jointly organised by CompNet and…
See page
1st CompNet Data User Conference
1st CompNet Data User Conference Since it is well established among researchers of productivity and competitiveness that macro data cannot answer all questions emerging in today's…
See page
ComProd Monitor
ComProd Monitor The CompNet monitor of Competitiveness and Productivity indicators ComProd is a comprehensive dataset of innovative and traditional indicators of competitiveness…
See page
