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A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

169,341 papers · 148 categories

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0111 · Jun 201419922001200920182026
7 results for sum-of-exponentials

A multivariate Hawkes process with sum-of-three-exponentials kernel fits limit order book data well.

problem Capturing clustering behavior in financial systems using Hawkes processes.
method Fitted multivariate Hawkes process with sum-of-three-exponentials kernel to limit order book data, tested for goodness-of-fit and stationarity.
result Sum-of-three-exponentials kernel yields the best fit to coupled point processes.

This paper uses Hawkes processes to forecast high-frequency order flow imbalance.

problem Forecasting the asymmetry in high-frequency order flow events.
method Hawkes processes accounting for lagged dependence between bid and offer events.
result Hawkes process with a Sum of Exponential's kernel gives the best forecast of order flow imbalance.

Efficiently simulates and calibrates the rough Bergomi model using Wasserstein distance.

problem High computational complexity in pricing and calibration of the rough Bergomi model.
method Developed a modified-sum-of-exponentials Monte Carlo scheme and a calibration approach based on Wasserstein-1 distance.
result The method achieves high pricing accuracy and improved parameter recovery, optimization stability, and out-of-sample performance.

Fast simulates Volterra processes using RFF, focusing on S-fBM.

problem Efficiently simulate Volterra processes for fractional Brownian motion.
method Random Fourier Features (RFF) approximation of kernel, spectral representation, Hamiltonian Monte Carlo sampling.
result Quantitative guarantees for RFF approximation, competitive in terms of efficiency and error.