Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Interpretable machine learning for diversified portfolio construction
Authors: Jaeger, Markus
Krügel, Stephan
Marinelli, Dimitri
Papenbrock, Jochen
Schwendner, Peter
et. al: No
DOI: 10.3905/jfds.2021.1.066
Published in: The Journal of Financial Data Science
Volume(Issue): 3
Issue: 3
Page(s): 31
Pages to: 51
Issue Date: 2021
Publisher / Ed. Institution: Portfolio Management Research
ISSN: 2640-3943
2640-3951
Language: English
Subjects: Big data; Machine learning; Performance measurement; Statistical method
Subject (DDC): 006: Special computer methods
332.6: Investment
Abstract: In this article, the authors construct a pipeline to benchmark hierarchical risk parity (HRP) relative to equal risk contribution (ERC) as examples of diversification strategies allocating to liquid multi-asset futures markets with dynamic leverage (volatility target). The authors use interpretable machine learning concepts (explainable AI) to compare the robustness of the strategies and to back out implicit rules for decision-making. The empirical dataset consists of 17 equity index, government bond, and commodity futures markets across 20 years. The two strategies are back tested for the empirical dataset and for about 100,000 bootstrapped datasets. XGBoost is used to regress the Calmar ratio spread between the two strategies against features of the bootstrapped datasets. Compared to ERC, HRP shows higher Calmar ratios and better matches the volatility target. Using Shapley values, the Calmar ratio spread can be attributed especially to univariate drawdown measures of the asset classes.
URI: https://digitalcollection.zhaw.ch/handle/11475/23004
Fulltext version: Published version
License (according to publishing contract): Licence according to publishing contract
Departement: School of Management and Law
Organisational Unit: Institute of Wealth & Asset Management (IWA)
Appears in collections:Publikationen School of Management and Law

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