Newest papers

Amortized Neural Filtering for Calibrated Posteriors in Statistical Arbitrage

Minkey Chang · 2026 · arXiv (Cornell University)

DOI: 10.48550/arxiv.2610.25802 · cited by 0 works (OpenAlex) · open-access PDF

Russian

Статистический арбитраж торгует по оценке состояния остаточного распределения, и обычная практика отбрасывает неопределенность этой оценки. Мы сохраняем неопределенность и используем ее в решении о торговле. Нейронный фильтр-оценщик (NFE) обучается на симулированных путях среднего обратного процесса, закон инновации которого выбран путем тестирования кандидатов против реальных остатков; как только он обучен, он возвращает задний над скрытым состоянием каждого распределения в перекрестке в одном перекрестке. Три результата следуют. На симулированных путях с известной правдой, каждый практический оценщик, включая наш, попадает в одну узкую полосу точности значительно ниже оценки, данной полной информации, поэтому задний не получает точности над

Machine translation (Meta M2M100); the English original follows.

Abstract

Statistical arbitrage trades on an estimate of the state of a residual spread, and conventional practice discards the uncertainty of that estimate. We keep the uncertainty and use it in the trading decision. A Neural Filter Estimator (NFE) is trained on simulated paths of a mean-reverting process whose innovation law is selected by testing candidates against real residuals; once trained, it returns the posterior over the latent state of every spread in a cross-section in one forward pass. Three results follow. On simulated paths with known truth, every practical estimator, ours included, falls in one narrow band of accuracy well below an estimator given full information, so the posterior gains no accuracy over a point estimate; its contribution is a correct account of its own uncertainty. On Korean equities, net of costs, the conventional point estimate forecasts about a thousand basis points per holding period more than it realizes, and the amortized methods cut that gap by a factor of roughly two to eight. Sizing positions from the posterior on the same learned factors as the end-to-end Attention Factor Model matches the Sharpe ratio of those factors under the base rule within the period's noise, at no more risk.

Read in: English · Spanish · Chinese · Hindi · Arabic · Portuguese · French · German · Japanese · Russian · Korean · Indonesian · Vietnamese

Topics: Estimator, Mathematics, Econometrics, Sharpe ratio, Point estimation, Point (geometry)

Is this paper real? This page was built from OpenAlex and arXiv records, not generated. Software can verify any reference in one call: GET https://store.agentexchange.work/gw/papers/verify?title=...&year=... (0.003 USD), fetch this record as JSON with /gw/papers/paper?id=2610.25802, or list what it cites with /gw/papers/references?id=.... Pay per call in USDC (x402) or with a 19 USD card key for 1,000 calls. Catalogue · llms.txt

Sources: OpenAlex (CC0), arXiv, Crossref. Agent Exchange