RALE-Gate: Reliability-Aware Latent Analytics for Explainable Portfolio Risk Control
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更新:2026-11-10 16:46:02 浏览:8次
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摘要
Machine-learning models for portfolio management are usually trained to forecast returns, yet they rarely recognise when the market has moved outside the conditions they have learned. This paper proposes RALE-Gate, a reliability-aware latent analytics framework that replaces the question “what will the market return?” with “how well does the model currently understand the market?”. A standard autoencoder is trained to learn a representation of the thirteen causal market variables, from which three signals of reliability are extracted, namely the calibrated reconstruction-based unfamiliarity, the latent distribution shift and the latent drift, and added together in the form of an additive instability index. This trend-confirmed gate triggers equity selling only when high instability coincides with a negative risk-adjusted trend, ensuring that novelty isn't the sole trigger of a sell, and that the additive model provides a driver-level explanation for every allocation decision. It is further tested using a leakage-free walk-forward protocol and a prespecified design in which the choice of models is based only on the BSE SENSEX and the S&P 500 and the Nikkei 225 and the FTSE 100 are reserved for a single final test (2019–2026). Across all four markets RALE-Gate reduces the maximum drawdown compared to buy-and-hold-from 38.1% to 19.4% on SENSEX and from 35.0% to 23.2% on FTSE-with statistically indistinguishable Sharpe ratios. On the held-out markets it beats 200-day moving-average timing, the best rule in the development markets, by a combined Sharpe-ratio margin of 0.16 (one-sided p = 0.048), and Unreliable-Stress states are followed by volatility of 1.8 to 2.6 times higher.
关键词
intelligent analytics, financial analytics, autoencoder, model reliability, novelty detection, explainable AI, portfolio risk control, walk-forward validation
稿件作者
Tanuja Mathpal
India;Department of Mathematics; Statistics and Computer Science; G.B. Pant University of Agriculture and Technology; Pantnagar
Arun Kumar
G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand;Department of Mathematics, Statistics, and Computer Science
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