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Tutoring is an effective instructional method for enhancing student learning, yet its success relies on the skill and experience of the tutors. This reliance presents challenges for the widespread implementation of tutoring, particularly in…

人机交互 · 计算机科学 2025-10-21 Chentianye Xu , Jionghao Lin , Tongshuang Wu , Vincent Aleven , Kenneth R. Koedinger

Recent advances in generative deep learning have enabled the creation of high-quality synthetic images in text-to-image generation. Prior work shows that fine-tuning a pretrained diffusion model on ImageNet and generating synthetic training…

计算机视觉与模式识别 · 计算机科学 2025-01-22 Zhuoran Yu , Chenchen Zhu , Sean Culatana , Raghuraman Krishnamoorthi , Fanyi Xiao , Yong Jae Lee

Foundation models contain a wealth of information from their vast number of training samples. However, most prior arts fail to extract this information in a precise and efficient way for small sample sizes. In this work, we propose a…

机器学习 · 计算机科学 2024-04-26 Nico Schiavone , Xingyu Li

The usage of medical image data for the training of large-scale machine learning approaches is particularly challenging due to its scarce availability and the costly generation of data annotations, typically requiring the engagement of…

计算机视觉与模式识别 · 计算机科学 2024-06-26 Joshua Niemeijer , Jan Ehrhardt , Hristina Uzunova , Heinz Handels

Recent generative data augmentation methods conditioned on both image and text prompts struggle to balance between fidelity and diversity, as it is challenging to preserve essential image details while aligning with varied text prompts.…

计算机视觉与模式识别 · 计算机科学 2025-10-20 Tianchen Zhao , Xuanbai Chen , Zhihua Li , Jun Fang , Dongsheng An , Xiang Xu , Zhuowen Tu , Yifan Xing

Due to their data-driven nature, Machine Learning (ML) models are susceptible to bias inherited from data, especially in classification problems where class and group imbalances are prevalent. Class imbalance (in the classification target)…

机器学习 · 计算机科学 2024-09-10 Emmanouil Panagiotou , Arjun Roy , Eirini Ntoutsi

Deep learning techniques have become widely utilized in histopathology image classification due to their superior performance. However, this success heavily relies on the availability of substantial labeled data, which necessitates…

图像与视频处理 · 电气工程与系统科学 2024-10-15 Meng Li , Chaoyi Li , Can Peng , Brian C. Lovell

Recommender systems are essential for enhancing user experiences by suggesting items based on individual preferences. However, these systems frequently face the challenge of data imbalance, characterized by a predominance of negative…

信息检索 · 计算机科学 2024-06-27 Fatih Cihan Taskin , Ilknur Akcay , Muhammed Pesen , Said Aldemir , Ipek Iraz Esin , Furkan Durmus

Synthetic data becomes crucial for large language model training, but its effectiveness is highly inconsistent. We provide an information-theoretic account of this inconsistency: synthetic data improves a model only when the…

机器学习 · 计算机科学 2026-05-19 Hanyu Li , Zhengqi Sun , Xiaotie Deng

Many real-world applications reveal difficulties in learning classifiers from imbalanced data. The rising big data era has been witnessing more classification tasks with large-scale but extremely imbalance and low-quality datasets. Most of…

机器学习 · 计算机科学 2020-10-20 Zhining Liu , Wei Cao , Zhifeng Gao , Jiang Bian , Hechang Chen , Yi Chang , Tie-Yan Liu

Despite extensive research spanning several decades, class imbalance is still considered a profound difficulty for both machine learning and deep learning models. While data oversampling is the foremost technique to address this issue,…

机器学习 · 计算机科学 2025-02-12 Sukumar Kishanthan , Asela Hevapathige

With the availability of powerful text-to-image diffusion models, recent works have explored the use of synthetic data to improve image classification performances. These works show that it can effectively augment or even replace real data.…

计算机视觉与模式识别 · 计算机科学 2023-11-29 Perla Doubinsky , Nicolas Audebert , Michel Crucianu , Hervé Le Borgne

Limited data availability in machine learning significantly impacts performance and generalization. Traditional augmentation methods enhance moderately sufficient datasets. GANs struggle with convergence when generating diverse samples.…

机器学习 · 计算机科学 2024-10-02 Vahid Jebraeeli , Bo Jiang , Hamid Krim , Derya Cansever

High-fidelity generative models are increasingly needed in privacy-sensitive scenarios, where access to data is severely restricted due to regulatory and copyright constraints. This scarcity hampers model development--ironically, in…

计算机视觉与模式识别 · 计算机科学 2026-04-10 Xuemei Jia , Jiawei Du , Hui Wei , Jun Chen , Joey Tianyi Zhou , Zheng Wang

Real-world data often follow a long-tailed distribution as the frequency of each class is typically different. For example, a dataset can have a large number of under-represented classes and a few classes with more than sufficient data.…

计算机视觉与模式识别 · 计算机科学 2020-08-11 Peng Chu , Xiao Bian , Shaopeng Liu , Haibin Ling

A challenge in training discriminative models like neural networks is obtaining enough labeled training data. Recent approaches use generative models to combine weak supervision sources, like user-defined heuristics or knowledge bases, to…

机器学习 · 计算机科学 2017-09-29 Paroma Varma , Bryan He , Dan Iter , Peng Xu , Rose Yu , Christopher De Sa , Christopher Ré

For researchers leveraging Large-Language Models (LLMs) in the generation of training datasets, especially for conversational recommender systems - the absence of robust evaluation frameworks has been a long-standing problem. The efficiency…

计算与语言 · 计算机科学 2022-12-19 Harsh Lara , Manoj Tiwari

Acquiring and annotating suitable datasets for training deep learning models is challenging. This often results in tedious and time-consuming efforts that can hinder research progress. However, generative models have emerged as a promising…

计算机视觉与模式识别 · 计算机科学 2023-06-07 Andrea Lampis , Eugenio Lomurno , Matteo Matteucci

Supervised deep learning methods are enjoying enormous success in many practical applications of computer vision and have the potential to revolutionize robotics. However, the marked performance degradation to biases and imbalanced data…

计算机视觉与模式识别 · 计算机科学 2020-08-14 Aadarsh Sahoo , Ankit Singh , Rameswar Panda , Rogerio Feris , Abir Das

Generative models capable of capturing nuanced clinical features in medical images hold great promise for facilitating clinical data sharing, enhancing rare disease datasets, and efficiently synthesizing annotated medical images at scale.…

图像与视频处理 · 电气工程与系统科学 2023-06-23 Shenghuan Sun , Gregory M. Goldgof , Atul Butte , Ahmed M. Alaa