Deep Learning in a Generalized HJM-type Framework Through Arbitrage-Free Regularization
Abstract
We introduce a regularization approach to arbitrage-free factor-model selection. The considered model selection problem seeks to learn the closest arbitrage-free HJM-type model to any prespecified factor-model. An asymptotic solution to this, a priori computationally intractable, problem is represented as the limit of a 1-parameter family of optimizers to computationally tractable model selection tasks. Each of these simplified model-selection tasks seeks to learn the most similar model, to the prescribed factor-model, subject to a penalty detecting when the reference measure is a local martingale-measure for the entire underlying financial market. A simple expression for the penalty terms is obtained in the bond market withing the affine-term structure setting, and it is used to formulate a deep-learning approach to arbitrage-free affine term-structure modelling. Numerical implementations are also performed to evaluate the performance in the bond market.
- Publication:
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arXiv e-prints
- Pub Date:
- October 2017
- DOI:
- 10.48550/arXiv.1710.05114
- arXiv:
- arXiv:1710.05114
- Bibcode:
- 2017arXiv171005114K
- Keywords:
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- Quantitative Finance - Mathematical Finance;
- Mathematics - Probability;
- Quantitative Finance - Pricing of Securities;
- Statistics - Machine Learning
- E-Print:
- 23 Pages + References