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As foundation models grow in size, fine-tuning them becomes increasingly expensive. While GPU spot instances offer a low-cost alternative to on-demand resources, their volatile prices and availability make deadline-aware scheduling…

分布式、并行与集群计算 · 计算机科学 2025-12-25 Linggao Kong , Yuedong Xu , Lei Jiao , Chuan Xu

Robust planning in interactive scenarios requires predicting the uncertain future to make risk-aware decisions. Unfortunately, due to long-tail safety-critical events, the risk is often under-estimated by finite-sampling approximations of…

机器学习 · 计算机科学 2023-01-13 Haruki Nishimura , Jean Mercat , Blake Wulfe , Rowan McAllister , Adrien Gaidon

Time series forecasting is a relevant task that is performed in several real-world scenarios such as product sales analysis and prediction of energy demand. Given their accuracy performance, currently, Recurrent Neural Networks (RNNs) are…

机器学习 · 计算机科学 2021-07-30 Nils Thoma , Zhongjie Yu , Fabrizio Ventola , Kristian Kersting

Neural networks have revolutionized many empirical fields, yet their application to financial time series forecasting remains controversial. In this study, we demonstrate that the conventional practice of estimating models locally in…

计量经济学 · 经济学 2025-02-21 Chen Liu , Minh-Ngoc Tran , Chao Wang , Richard Gerlach , Robert Kohn

Financial time series forecasting is central to trading, portfolio optimization, and risk management, yet it remains challenging due to noisy, non-stationary, and heterogeneous data. Recent advances in time series foundation models (TSFMs),…

计算金融 · 定量金融 2025-11-25 Eghbal Rahimikia , Hao Ni , Weiguan Wang

Test-Time Scaling (TTS) improves the performance of Large Language Models (LLMs) by using additional inference-time computation to explore multiple reasoning paths through search. Yet how to allocate a fixed rollout budget most effectively…

机器学习 · 计算机科学 2025-10-21 Xinglin Wang , Yiwei Li , Shaoxiong Feng , Peiwen Yuan , Yueqi Zhang , Jiayi Shi , Chuyi Tan , Boyuan Pan , Yao Hu , Kan Li

In this paper, we apply conformal prediction to time series data. Conformal prediction isa method that produces predictive regions given a confidence level. The regions outputs arealways valid under the exchangeability assumption. However,…

统计方法学 · 统计学 2021-10-26 Samya Tajmouati , Bouazza El Wahbi , Mohammed Dakkoun

Time series refer to a series of data points indexed in time order, which can be found in various fields, e.g., transportation, healthcare, and finance. Accurate time series forecasting can enhance optimization planning and decision-making…

机器学习 · 计算机科学 2023-12-12 Ling Chen , Jiahua Cui

Financial market analysis, especially the prediction of movements of stock prices, is a challenging problem. The nature of financial time-series data, being non-stationary and nonlinear, is the main cause of these challenges. Deep learning…

机器学习 · 计算机科学 2021-07-16 Mostafa Shabani , Alexandros Iosifidis

Spatio-temporal forecasting is essential for understanding future dynamics within real-world systems by leveraging historical data from multiple locations. Existing methods often prioritize the development of intricate neural networks to…

机器学习 · 计算机科学 2025-07-08 Weilin Ruan , Wei Chen , Xilin Dang , Jianxiang Zhou , Weichuang Li , Xu Liu , Yuxuan Liang

Test time adaptation (TTA) has emerged as a promising solution to adapt pre-trained models to new, unseen data distributions using unlabeled target domain data. However, most TTA methods are designed for independent data, often overlooking…

机器学习 · 计算机科学 2026-01-21 Ting Dang , Soumyajit Chatterjee , Hong Jia , Yu Wu , Flora Salim , Fahim Kawsar

Literature highlighted that financial time series data pose significant challenges for accurate stock price prediction, because these data are characterized by noise and susceptibility to news; traditional statistical methodologies made…

交易与市场微观结构 · 定量金融 2024-09-27 V. Lanzetta

Recent advances to combine structured regression models and deep neural networks for better interpretability, more expressiveness, and statistically valid uncertainty quantification demonstrate the versatility of semi-structured neural…

机器学习 · 计算机科学 2023-06-02 David Rügamer

Portfolio management remains a crucial challenge in finance, with traditional methods often falling short in complex and volatile market environments. While deep reinforcement approaches have shown promise, they still face limitations in…

In this paper we introduce a Non-Stationary Fuzzy Time Series (NSFTS) method with time varying parameters adapted from the distribution of the data. In this approach, we employ Non-Stationary Fuzzy Sets, in which perturbation functions are…

Recurrent neural networks (RNNs) are state-of-the-art in several sequential learning tasks, but they often require considerable amounts of data to generalise well. For many time series forecasting (TSF) tasks, only a few dozens of…

机器学习 · 计算机科学 2020-03-30 Bernardo Pérez Orozco , Stephen J Roberts

Time series forecasting plays a vital role in various real-world applications and has attracted significant attention in recent decades. While recent methods have achieved remarkable accuracy by incorporating advanced inductive biases and…

机器学习 · 计算机科学 2025-12-16 Zhiding Liu , Mingyue Cheng , Guanhao Zhao , Jiqian Yang , Qi Liu , Enhong Chen

This paper proposes TIP-Search, a time-predictable inference scheduling framework for real-time market prediction under uncertain workloads. Motivated by the strict latency demands in high-frequency financial systems, TIP-Search dynamically…

人工智能 · 计算机科学 2025-06-18 Xibai Wang

Stochastic Optimization (SO) is a classical approach for optimization under uncertainty that typically requires knowledge about the probability distribution of uncertain parameters. As the latter is often unknown, Distributionally Robust…

Neural Networks (NNs) have been extensively used for a wide spectrum of real-world regression tasks, where the goal is to predict a numerical outcome such as revenue, effectiveness, or a quantitative result. In many such tasks, the point…

机器学习 · 计算机科学 2020-06-05 Xin Qiu , Elliot Meyerson , Risto Miikkulainen