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Missing values are a major challenge in most data science projects working on real data. To avoid losing valuable information, imputation methods are used to fill in missing values with estimates, allowing the preservation of samples or…

Machine Learning · Computer Science 2024-07-17 Pedro Pons-Suñer , Laura Arnal , J. Ramón Navarro-Cerdán , François Signol

The recently increased complexity of Machine Learning (ML) methods, led to the necessity to lighten both the research and industry development processes. ML pipelines have become an essential tool for experts of many domains, data…

Software Engineering · Computer Science 2022-07-18 Giordano d'Aloisio , Antinisca Di Marco , Giovanni Stilo

The performance of a machine learning system is not only determined by the model but also, to a substantial degree, by the data it is trained on. With the increasing use of machine learning, issues related to data quality have become a…

Software Engineering · Computer Science 2025-03-12 Julian Aron Prenner , Romain Robbes

Artificial Intelligence (AI) systems are not intrinsically neutral and biases trickle in any type of technological tool. In particular when dealing with people, the impact of AI algorithms' technical errors originating with mislabeled data…

Artificial Intelligence · Computer Science 2025-04-03 Camilla Quaresmini , Giuseppe Primiero

Context: The utility of prediction models in empirical software engineering (ESE) is heavily reliant on the quality of the data used in building those models. Several data quality challenges such as noise, incompleteness, outliers and…

Software Engineering · Computer Science 2021-05-25 Michael Franklin Bosu , Stephen G. MacDonell

Data quality is paramount in today's data-driven world, especially in the era of generative AI. Dirty data with errors and inconsistencies usually leads to flawed insights, unreliable decision-making, and biased or low-quality outputs from…

Databases · Computer Science 2025-04-01 Wei Ni , Xiaoye Miao , Xiangyu Zhao , Yangyang Wu , Jianwei Yin

There are many methods proposed for inferring parameters of the Ising model from given data, that is a set of configurations generated according to the model itself. However little attention has been paid until now to the data, e.g. how the…

Statistical Mechanics · Physics 2016-09-01 Aurélien Decelle , Federico Ricci-Tersenghi , Pan Zhang

High-quality, error-free datasets are a key ingredient in building reliable, accurate, and unbiased machine learning (ML) models. However, real world datasets often suffer from errors due to sensor malfunctions, data entry mistakes, or…

Machine Learning · Computer Science 2025-03-11 Tommaso Bendinelli , Artur Dox , Christian Holz

Lack of data and data quality issues are among the main bottlenecks that prevent further artificial intelligence adoption within many organizations, pushing data scientists to spend most of their time cleaning data before being able to…

Databases · Computer Science 2020-11-11 Paulo H. Oliveira , Daniel S. Kaster , Caetano Traina-Jr. , Ihab F. Ilyas

Development of new machine learning models is typically done on manually curated data sets, making them unsuitable for evaluating the models' performance during operations, where the evaluation needs to be performed automatically on…

Machine Learning · Computer Science 2021-10-15 Awalin Sopan , Konstantin Berlin

Instruction tuning is crucial for adapting large language models (LLMs) to align with user intentions. Numerous studies emphasize the significance of the quality of instruction tuning (IT) data, revealing a strong correlation between IT…

Computation and Language · Computer Science 2025-05-19 Hyeonseok Moon , Jaehyung Seo , Heuiseok Lim

High-quality Question-Answer (QA) datasets are foundational for reliable Large Language Model (LLM) evaluation, yet even expert-crafted datasets exhibit persistent gaps in domain coverage, misaligned difficulty distributions, and factual…

Computation and Language · Computer Science 2025-11-11 Xiaonan Luo , Yue Huang , Ping He , Xiangliang Zhang

Context: Machine Learning (ML) is integrated into a growing number of systems for various applications. Because the performance of an ML model is highly dependent on the quality of the data it has been trained on, there is a growing…

Machine Learning · Computer Science 2024-06-03 Pierre-Olivier Côté , Amin Nikanjam , Nafisa Ahmed , Dmytro Humeniuk , Foutse Khomh

Nowadays, machine learning (ML) plays a vital role in many aspects of our daily life. In essence, building well-performing ML applications requires the provision of high-quality data throughout the entire life-cycle of such applications.…

Databases · Computer Science 2023-02-10 Mohamed Abdelaal , Christian Hammacher , Harald Schoening

Classifying samples in incomplete datasets is a common aim for machine learning practitioners, but is non-trivial. Missing data is found in most real-world datasets and these missing values are typically imputed using established methods,…

Using machine learning (ML) techniques in general and deep learning techniques in specific needs a certain amount of data often not available in large quantities in technical domains. The manual inspection of machine tool components and the…

Computer Vision and Pattern Recognition · Computer Science 2022-02-22 Tobias Schlagenhauf , Magnus Landwehr , Juergen Fleischer

Data cleaning is one of the most important tasks in data analysis processes. One of the perennial challenges in data analytics is the detection and handling of non-valid data. Failing to do so can result in inaccurate analytics and…

Databases · Computer Science 2022-05-24 Mayur Kishor Shende , Andres E. Feijoo-Lorenzo , Neeraj Dhanraj Bokde

Recent studies show that in supervised fine-tuning (SFT) of large language models (LLMs), data quality matters more than quantity. While most data cleaning methods concentrate on filtering entire samples, the quality of individual tokens…

Computation and Language · Computer Science 2026-03-12 Jinlong Pang , Na Di , Zhaowei Zhu , Jiaheng Wei , Hao Cheng , Chen Qian , Yang Liu

Signal quality assessment (SQA) is required for monitoring the reliability of data acquisition systems, especially in AI-driven Predictive Maintenance (PMx) application contexts. SQA is vital for addressing "silent failures" of data…

Machine Learning · Computer Science 2024-02-02 Chufan Gao , Nicholas Gisolfi , Artur Dubrawski

Neural language models have achieved human level performance across several NLP datasets. However, recent studies have shown that these models are not truly learning the desired task; rather, their high performance is attributed to…

Computation and Language · Computer Science 2020-05-05 Swaroop Mishra , Anjana Arunkumar , Bhavdeep Sachdeva , Chris Bryan , Chitta Baral