Borrageiro, Gabriel Francisco;
Firoozye, Nick;
Barucca, Paolo;
(2022)
Sequential asset ranking in nonstationary time series.
In:
Proceedings of the Third ACM International Conference on AI in Finance.
(pp. pp. 454-462).
ACM (Association for Computing Machinery)
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Abstract
We extend the research into cross-sectional momentum trading strategies. Our main result is our novel ranking algorithm, the naive Bayes asset ranker (nbar), which we use to select subsets of assets to trade from the S&P 500 index. We perform feature representation transfer from radial basis function networks to a curds and whey (caw) multivariate regression model that takes advantage of the correlations between the response variables to improve predictive accuracy. The nbar ranks this regression output by forecasting the one-step-ahead sequential posterior probability that individual assets will be ranked higher than other portfolio constituents. Earlier algorithms, such as the weighted majority, deal with nonstationarity by ensuring the weights assigned to each expert never dip below a minimum threshold without ever increasing weights again. Our ranking algorithm allows experts who previously performed poorly to have increased weights when they start performing well. Our algorithm outperforms a strategy that would hold the long-only S&P 500 index with hindsight, despite the index appreciating by 205% during the test period. It also outperforms a regress-then-rank baseline, the caw model.
Type: | Proceedings paper |
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Title: | Sequential asset ranking in nonstationary time series |
Event: | ICAIF '22: 3rd ACM International Conference on AI in Finance |
ISBN-13: | 9781450393768 |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1145/3533271.3561666 |
Publisher version: | http://dx.doi.org/10.1145/3533271.3561666 |
Language: | English |
Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
Keywords: | online learning, prediction with expert advice, learning to rank, transfer learning, radial basis function networks, multivariate regression shrinkage |
UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science |
URI: | https://discovery.ucl.ac.uk/id/eprint/10162981 |
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