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Modern machine learning models (such as deep neural networks and boosting decision tree models) have become increasingly popular in financial market prediction, due to their superior capacity to extract complex non-linear patterns. However,…

机器学习 · 计算机科学 2021-02-02 Chuheng Zhang , Yuanqi Li , Xi Chen , Yifei Jin , Pingzhong Tang , Jian Li

Learning to Rank (LTR) technique is ubiquitous in the Information Retrieval system nowadays, especially in the Search Ranking application. The query-item relevance labels typically used to train the ranking model are often noisy…

信息检索 · 计算机科学 2022-07-11 Debabrata Mahapatra , Chaosheng Dong , Yetian Chen , Deqiang Meng , Michinari Momma

Deep neural networks have played an important role in automatic sleep stage classification because of their strong representation and in-model feature transformation abilities. However, class imbalance and individual heterogeneity which…

信号处理 · 电气工程与系统科学 2023-07-12 Xuewei Cheng , Ke Huang , Yi Zou , Shujie Ma

Expectation maximization (EM) is a technique for estimating maximum-likelihood parameters of a latent variable model given observed data by alternating between taking expectations of sufficient statistics, and maximizing the expected log…

统计方法学 · 统计学 2018-07-10 Donna Henderson , Gerton Lunter

We revisit the classical problem of Bayesian ensembles and address the challenge of learning optimal combinations of Bayesian models in an online, continual learning setting. To this end, we reinterpret existing approaches such as Bayesian…

机器学习 · 计算机科学 2026-01-26 Daniel Waxman , Fernando Llorente , Petar M. Djurić

Due to the sweeping digitalization of processes, increasingly vast amounts of time series data are being produced. Accurate classification of such time series facilitates decision making in multiple domains. State-of-the-art classification…

机器学习 · 计算机科学 2023-08-08 David Campos , Miao Zhang , Bin Yang , Tung Kieu , Chenjuan Guo , Christian S. Jensen

Novel and high-performance medical image classification pipelines are heavily utilizing ensemble learning strategies. The idea of ensemble learning is to assemble diverse models or multiple predictions and, thus, boost prediction…

计算机视觉与模式识别 · 计算机科学 2022-04-14 Dominik Müller , Iñaki Soto-Rey , Frank Kramer

Streaming applications from algorithmic trading to traffic management deploy Kleene patterns to detect and aggregate arbitrarily-long event sequences, called event trends. State-of-the-art systems process such queries in two steps. Namely,…

数据结构与算法 · 计算机科学 2020-10-08 Olga Poppe , Chuan Lei , Elke A. Rundensteiner , David Maier

Predicting a driver's cognitive state, or more specifically, modeling a driver's reaction time (RT) in response to the appearance of a potential hazard warrants urgent research. In the last two decades, the electric field that is generated…

人机交互 · 计算机科学 2019-05-28 Chun-Hsiang Chuang , Zehong Cao , Po-Tsang Chen , Chih-Sheng Huang , Nikhil R. Pal , Chin-Teng Lin

Deep ensemble methods often improve predictive performance, yet they suffer from three practical limitations: redundancy among base models that inflates computational cost and degrades conditioning, unstable weighting under…

机器学习 · 计算机科学 2026-04-27 Noor Islam S. Mohammad , Md Muntaqim Meherab

Labeled data can be expensive to acquire in several application domains, including medical imaging, robotics, and computer vision. To efficiently train machine learning models under such high labeling costs, active learning (AL) judiciously…

机器学习 · 计算机科学 2022-06-13 Konstantinos D. Polyzos , Qin Lu , Georgios B. Giannakis

Entity alignment (EA) is the task of identifying the entities that refer to the same real-world object but are located in different knowledge graphs (KGs). For entities to be aligned, existing EA solutions treat them separately and generate…

计算与语言 · 计算机科学 2021-01-06 Weixin Zeng , Xiang Zhao , Jiuyang Tang , Xuemin Lin , Paul Groth

Ensembling is a universally useful approach to boost the performance of machine learning models. However, individual models in an ensemble were traditionally trained independently in separate stages without information access about the…

计算机视觉与模式识别 · 计算机科学 2019-09-27 Hanhan Li , Joe Yue-Hei Ng , Paul Natsev

In modern statistics, interests shift from pursuing the uniformly minimum variance unbiased estimator to reducing mean squared error (MSE) or residual squared error. Shrinkage based estimation and regression methods offer better prediction…

统计方法学 · 统计学 2025-02-25 Tianyu Zhan , Haoda Fu , Jian Kang

The combination of Internet of Things (IoT) and Edge Computing (EC) can assist in the delivery of novel applications that will facilitate end users activities. Data collected by numerous devices present in the IoT infrastructure can be…

数据库 · 计算机科学 2020-08-13 Kostas Kolomvatsos , Christos Anagnostopoulos

Automated Machine Learning (AutoML) significantly simplifies the deployment of machine learning models by automating tasks from data preprocessing to model selection to ensembling. AutoML systems for tabular data often employ post hoc…

机器学习 · 计算机科学 2024-08-06 Jannis Maier , Felix Möller , Lennart Purucker

Accurate prediction of students knowledge is a fundamental building block of personalized learning systems. Here, we propose a novel ensemble model to predict student knowledge gaps. Applying our approach to student trace data from the…

计算与语言 · 计算机科学 2018-07-18 Anton Osika , Susanna Nilsson , Andrii Sydorchuk , Faruk Sahin , Anders Huss

Improving model performance is always the key problem in machine learning including deep learning. However, stand-alone neural networks always suffer from marginal effect when stacking more layers. At the same time, ensemble is an useful…

计算机视觉与模式识别 · 计算机科学 2020-05-12 Yuan Gao , Zixiang Cai , Lei Yu

Averaging predictions over a set of models -- an ensemble -- is widely used to improve predictive performance and uncertainty estimation of deep learning models. At the same time, many machine learning systems, such as search, matching, and…

机器学习 · 计算机科学 2021-07-15 Arsenii Ashukha , Andrei Atanov , Dmitry Vetrov

In the era of Large Language Models (LLMs), Retrieval-Augmented Generation (RAG) architectures are gaining significant attention for their ability to ground language generation in reliable knowledge sources. Despite their effectiveness, RAG…

信息检索 · 计算机科学 2026-05-11 Francesco Granata , Francesco Poggi , Misael Mongiovì