Goto

Collaborating Authors

 Vermilion Parish


Multivariate Forecasting of Bitcoin Volatility with Gradient Boosting: Deterministic, Probabilistic, and Feature Importance Perspectives

Dudek, Grzegorz, Kasprzyk, Mateusz, Pełka, Paweł

arXiv.org Artificial Intelligence

This study investigates the application of the Light Gradient Boosting Machine (LGBM) model for both deterministic and probabilistic forecasting of Bitcoin realized volatility. Utilizing a comprehensive set of 69 predictors -- encompassing market, behavioral, and macroeconomic indicators -- we evaluate the performance of LGBM-based models and compare them with both econometric and machine learning baselines. For probabilistic forecasting, we explore two quantile-based approaches: direct quantile regression using the pinball loss function, and a residual simulation method that transforms point forecasts into predictive distributions. To identify the main drivers of volatility, we employ gain-based and permutation feature importance techniques, consistently highlighting the significance of trading volume, lagged volatility measures, investor attention, and market capitalization. The results demonstrate that LGBM models effectively capture the nonlinear and high-variance characteristics of cryptocurrency markets while providing interpretable insights into the underlying volatility dynamics.


Data-driven Calibration Sample Selection and Forecast Combination in Electricity Price Forecasting: An Application of the ARHNN Method

Serafin, Tomasz, Nitka, Weronika

arXiv.org Machine Learning

Calibration sample selection and forecast combination are two simple yet powerful tools used in forecasting. They can be combined with a variety of models to significantly improve prediction accuracy, at the same time offering easy implementation and low computational complexity. While their effectiveness has been repeatedly confirmed in prior scientific literature, the topic is still underexplored in the field of electricity price forecasting. In this research article we apply the Autoregressive Hybrid Nearest Neighbors (ARHNN) method to three long-term time series describing the German, Spanish and New England electricity markets. We show that it outperforms popular literature benchmarks in terms of forecast accuracy by up to 10%. We also propose two simplified variants of the method, granting a vast decrease in computation time with only minor loss of prediction accuracy. Finally, we compare the forecasts' performance in a battery storage system trading case study. We find that using a forecast-driven strategy can achieve up to 80% of theoretical maximum profits while trading, demonstrating business value in practical applications.


2018 Manufacturing Research Review 2020 Deep Dive Strategy & Competition – Market Reports

#artificialintelligence

Over the past few years, the manufacturing industry continued to remain a critical force in both advanced and developing economies. The sector has gone through significant transformations bringing out new opportunities and challenges to business leaders and policy makers. Get PDF Sample Copy of this report at https://decisionmarketreports.com/request-sample/1247548 In advanced economies, the manufacturing sector has largely concentrated on promoting innovation, productivity and trade more than growth and employment. In many advanced economies manufacturing sector has to consume more services and rely heavily on them to operate.