Variational Heteroscedastic Volatility Model

• URL: http://arxiv.org/abs/2204.05806v1
• Date: Mon, 11 Apr 2022 15:29:46 GMT
• Title: Variational Heteroscedastic Volatility Model
• Authors: Zexuan Yin, Paolo Barucca
• Abstract summary: We propose an end-to-end neural network architecture capable of modelling heteroscedastic behaviour in financial time series. VHVM consists of a variational autoencoder to capture relationships between assets, and a recurrent neural network to model the time-evolution of these dependencies.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We propose Variational Heteroscedastic Volatility Model (VHVM) -- an end-to-end neural network architecture capable of modelling heteroscedastic behaviour in multivariate financial time series. VHVM leverages recent advances in several areas of deep learning, namely sequential modelling and representation learning, to model complex temporal dynamics between different asset returns. At its core, VHVM consists of a variational autoencoder to capture relationships between assets, and a recurrent neural network to model the time-evolution of these dependencies. The outputs of VHVM are time-varying conditional volatilities in the form of covariance matrices. We demonstrate the effectiveness of VHVM against existing methods such as Generalised AutoRegressive Conditional Heteroscedasticity (GARCH) and Stochastic Volatility (SV) models on a wide range of multivariate foreign currency (FX) datasets.

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