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This study proposes a portfolio optimization framework that integrates advanced deep learning architectures with traditional financial models to enhance risk-adjusted performance. Using historical data from 2015-2023 across equities, ETFs,…

计算工程、金融与科学 · 计算机科学 2026-04-28 Samuel Ozechi , Banjo Francis , Wisdom Yakanu , Joe Wayne Byers

Deep learning models have become increasingly popular for flood prediction due to their superior accuracy and efficiency compared to traditional methods. However, current machine learning methods often rely on separate spatial or temporal…

机器学习 · 计算机科学 2024-02-13 Zuxiang Situ , Qi Wang , Shuai Teng , Wanen Feng , Gongfa Chen , Qianqian Zhou , Guangtao Fu

Pre-season prediction of crop production outcomes such as grain yields and N losses can provide insights to stakeholders when making decisions. Simulation models can assist in scenario planning, but their use is limited because of data…

其他定量生物学 · 定量生物学 2020-11-09 Mohsen Shahhosseini , Rafael A. Martinez-Feria , Guiping Hu , Sotirios V. Archontoulis

Evolutionary artificial neural networks (EANNs) refer to a special class of artificial neural networks (ANNs) in which evolution is another fundamental form of adaptation in addition to learning. Evolutionary algorithms are used to adapt…

人工智能 · 计算机科学 2016-11-17 Ajith Abraham

This study examines how artificial intelligence (AI), especially Reinforcement Learning (RL), can be used in farming to boost crop yields, fine-tune nitrogen use and watering, and reduce nitrate runoff and greenhouse gases, focusing on…

机器学习 · 计算机科学 2024-02-15 Zhaoan Wang , Shaoping Xiao , Jun Wang , Ashwin Parab , Shivam Patel

Accurate and continuous monitoring of river water levels is essential for flood forecasting, water resource management, and ecological protection. Traditional hydrological observation methods are often limited by manual measurement errors…

计算机视觉与模式识别 · 计算机科学 2025-12-30 Kayathri Vigneswaran , Hugo Retief , Jai Clifford Holmes , Mariangel Garcia Andarcia , Hansaka Tennakoon

Stochastic gradient descent (SGD) algorithm is an effective learning strategy to build a latent factor analysis (LFA) model on a high-dimensional and incomplete (HDI) matrix. A particle swarm optimization (PSO) algorithm is commonly adopted…

神经与进化计算 · 计算机科学 2022-08-05 Jiufang Chen , Ye Yuan

Weather forecasting plays a vital role in numerous sectors, but accurately capturing the complex dynamics of weather systems remains a challenge for traditional statistical models. Apart from Auto Regressive time forecasting models like…

神经与进化计算 · 计算机科学 2023-11-27 Anuvab Sen , Arul Rhik Mazumder , Dibyarup Dutta , Udayon Sen , Pathikrit Syam , Sandipan Dhar

Gradient descent (GD) methods for the training of artificial neural networks (ANNs) belong nowadays to the most heavily employed computational schemes in the digital world. Despite the compelling success of such methods, it remains an open…

最优化与控制 · 数学 2025-09-01 Shokhrukh Ibragimov , Arnulf Jentzen , Adrian Riekert

Floods are among the most damaging weather-related hazards, and in 2024, the warmest year on record, extreme flood events affected communities across five continents. Earth observation (EO) satellites provide critical, frequent coverage for…

In this paper, we propose new Metropolis-Hastings and simulated annealing algorithms on finite state space via modifying the energy landscape. The core idea of landscape modification rests on introducing a parameter $c$, in which the…

数学物理 · 物理学 2023-09-12 Michael C. H. Choi

Grey wolf optimizer (GWO) is a nature-inspired stochastic meta-heuristic of the swarm intelligence field that mimics the hunting behavior of grey wolves. Differential evolution (DE) is a popular stochastic algorithm of the evolutionary…

We present a novel hybrid strategy based on machine learning to improve curvature estimation in the level-set method. The proposed inference system couples enhanced neural networks with standard numerical schemes to compute curvature more…

机器学习 · 计算机科学 2022-09-29 Luis Ángel Larios-Cárdenas , Frédéric Gibou

Forecasting Heavy Precipitation Events (HPE) in the Mediterranean is crucial but challenging due to the complexity of the processes involved. In this context, Artificial Intelligence methods have recently proven to be competitive with…

Deep learning is a powerful tool to represent subgrid processes in climate models, but many application cases have so far used idealized settings and deterministic approaches. Here, we develop stochastic parameterizations with calibrated…

Precision soil greenhouse gas (GHG) flux prediction is essential in agricultural systems for assessing environmental impacts, developing emission mitigation strategies and promoting sustainable agriculture. Due to the lack of advanced…

机器学习 · 计算机科学 2025-06-23 Yu Zhang , Gaoshan Bi , Simon Jeffery , Max Davis , Yang Li , Qing Xue , Po Yang

SGD and AdamW are the two most used optimizers for fine-tuning large neural networks in computer vision. When the two methods perform the same, SGD is preferable because it uses less memory (12 bytes/parameter with momentum and 8…

计算机视觉与模式识别 · 计算机科学 2023-10-11 Ananya Kumar , Ruoqi Shen , Sebastien Bubeck , Suriya Gunasekar

Long-term groundwater level (GWL) measurement is vital for effective policymaking and recharge estimation using annual maxima and minima. However, current methods prioritize short-term predictions and lack multi-year applicability, limiting…

This study investigates whether coupling crop modeling and machine learning (ML) improves corn yield predictions in the US Corn Belt. The main objectives are to explore whether a hybrid approach (crop modeling + ML) would result in better…

定量方法 · 定量生物学 2021-03-03 Mohsen Shahhosseini , Guiping Hu , Sotirios V. Archontoulis , Isaiah Huber

Development of the new methods of surface water observation is crucial in the perspective of increasingly frequent extreme hydrological events related to global warming and increasing demand for water. Orthophotos and digital surface models…

神经与进化计算 · 计算机科学 2022-12-06 Radosław Szostak , Marcin Pietroń , Mirosław Zimnoch , Przemysław Wachniew , Paweł Ćwiąkała , Edyta Puniach