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Outliers have emerged as a fundamental bottleneck in preserving accuracy for low-precision large models, particularly within Mixture-of-Experts (MoE) architectures that are increasingly central to large-scale language modeling. Under…

Machine Learning · Computer Science 2026-04-14 Xiangyang Yin , Xingyu Liu , Tianhua Xia , Bo Bao , Vithursan Thangarasa , Valavan Manohararajah , Eric Sather , Sai Qian Zhang

Class imbalance in a dataset is a major problem for classifiers that results in poor prediction with a high true positive rate (TPR) but a low true negative rate (TNR) for a majority positive training dataset. Generally, the pre-processing…

Machine Learning · Computer Science 2022-03-29 Anuraganand Sharma , Prabhat Kumar Singh , Rohitash Chandra

Real world datasets are heavily skewed where some classes are significantly outnumbered by the other classes. In these situations, machine learning algorithms fail to achieve substantial efficacy while predicting these under-represented…

Machine Learning · Computer Science 2021-03-16 Mimi Mukherjee , Matloob Khushi

Synthetic Minority Over-sampling Technique (SMOTE) is the most popular over-sampling method. However, its random nature makes the synthesized data and even imbalanced classification results unstable. It means that in case of running SMOTE n…

Machine Learning · Computer Science 2020-03-24 Hadi Mansourifar , Weidong Shi

In this paper we propose a novel data-level algorithm for handling data imbalance in the classification task, Synthetic Majority Undersampling Technique (SMUTE). SMUTE leverages the concept of interpolation of nearby instances, previously…

Machine Learning · Computer Science 2021-04-20 Michał Koziarski

Synthetic Minority Oversampling Technique (SMOTE) is a common rebalancing strategy for handling imbalanced tabular data sets. However, few works analyze SMOTE theoretically. In this paper, we derive several non-asymptotic upper bound on…

Machine Learning · Statistics 2026-03-18 Abdoulaye Sakho , Emmanuel Malherbe , Erwan Scornet

The authors compared oversampling methods for the problem of multi-class topic classification. The SMOTE algorithm underlies one of the most popular oversampling methods. It consists in choosing two examples of a minority class and…

Computation and Language · Computer Science 2020-08-12 Anna Glazkova

In practice, machine learning experts are often confronted with imbalanced data. Without accounting for the imbalance, common classifiers perform poorly and standard evaluation metrics mislead the practitioners on the model's performance. A…

Machine Learning · Computer Science 2020-07-21 Ramiro Camino , Christian Hammerschmidt , Radu State

In this work, we employ the Synthetic Minority Oversampling Technique (SMOTE) to generate instances of the minority class of an imbalanced Coronary Artery Disease dataset. We firstly analyze the public dataset Z -- Alizadeh Sani, a dataset…

Medical Physics · Physics 2020-04-09 Ioannis D. Apostolopoulos

In this research we use a data stream approach to mining data and construct Decision Tree models that predict software build outcomes in terms of software metrics that are derived from source code used in the software construction process.…

Software Engineering · Computer Science 2014-07-10 Russel Pears , Jacqui Finlay , Andy M. Connor

Machine learning classifiers often stumble over imbalanced datasets where classes are not equally represented. This inherent bias towards the majority class may result in low accuracy in labeling minority class. Imbalanced learning is…

Machine Learning · Computer Science 2019-11-14 Wenhao Zhang , Ramin Ramezani , Arash Naeim

Forums play an important role in providing a platform for community interaction. The introduction of irrelevant content or spam by individuals for commercial and social gains tends to degrade the professional experience presented to the…

Information Retrieval · Computer Science 2019-09-12 Pratik Ratadiya , Rahul Moorthy

Imbalanced Data (ID) is a problem that deters Machine Learning (ML) models for achieving satisfactory results. ID is the occurrence of a situation where the quantity of the samples belonging to one class outnumbers that of the other by a…

Data-driven fault diagnostics and prognostics suffers from class-imbalance problem in industrial systems and it raises challenges to common machine learning algorithms as it becomes difficult to learn the features of the minority class…

Machine Learning · Computer Science 2018-11-20 Wenfang Lin , Zhenyu Wu , Yang Ji

Imbalanced classification is a significant challenge in machine learning, especially in critical applications like medical diagnosis, fraud detection, and cybersecurity. Traditional oversampling techniques, such as SMOTE, often fail to…

Machine Learning · Computer Science 2025-09-16 Mahabubur Rahman Miraj , Hongyu Huang , Ting Yang , Jinxue Zhao , Nankun Mu , Xinyu Lei

Class imbalance is a substantial challenge in classifying many real-world cases. Synthetic over-sampling methods have been effective to improve the performance of classifiers for imbalance problems. However, most synthetic over-sampling…

Machine Learning · Computer Science 2021-08-11 Hadi A. Khorshidi , Uwe Aickelin

SMOTE is one of the oversampling techniques for balancing the datasets and it is considered as a pre-processing step in learning algorithms. In this paper, four new enhanced SMOTE are proposed that include an improved version of KNN in…

Machine Learning · Computer Science 2018-04-04 Sima Sharifirad , Azra Nazari , Mehdi Ghatee

Imbalanced datasets in medical imaging are characterized by skewed class proportions and scarcity of abnormal cases. When trained using such data, models tend to assign higher probabilities to normal cases, leading to biased performance.…

Machine Learning · Computer Science 2023-11-14 Yumnah Hasan , Fatemeh Amerehi , Patrick Healy , Conor Ryan

We present SmoothRot, a novel post-training quantization technique to enhance the efficiency of 4-bit quantization in Large Language Models (LLMs). SmoothRot addresses the critical challenge of massive activation outliers, by integrating…

Computation and Language · Computer Science 2025-07-30 Patrik Czakó , Gábor Kertész , Sándor Szénási

This research introduces a hybrid classical-quantum framework for text classification, integrating GPT-Neo 125M with Low-Rank Adaptation (LoRA) and Synthetic Minority Over-sampling Technique (SMOTE) using quantum computing backends. While…

Machine Learning · Computer Science 2025-01-23 Santanam Wishal