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Missing data is a systemic problem in practical scenarios that causes noise and bias when estimating treatment effects. This makes treatment effect estimation from data with missingness a particularly tricky endeavour. A key reason for this…

机器学习 · 统计学 2023-02-27 Jeroen Berrevoets , Fergus Imrie , Trent Kyono , James Jordon , Mihaela van der Schaar

Tabular data forms the backbone of high-stakes decision systems in finance, healthcare, and beyond. Yet industrial tabular datasets are inherently difficult: high-dimensional, riddled with missing entries, and rarely labeled at scale. While…

机器学习 · 计算机科学 2026-05-13 Bo Zheng , Yudong Chen , Zihua Xiong , Shuai Fang , Peidong He , Yang Yang , Sheng Guo

Tabular foundation models (TFMs) such as TabPFN (Tabular Prior-Data Fitted Network) are designed to generalize across heterogeneous tabular datasets through in-context learning (ICL). They perform prediction in a single forward pass…

机器学习 · 计算机科学 2026-04-09 James Hu , Mahdi Ghelichi

The ubiquity of missing data has sparked considerable attention and focus on tabular data imputation methods. Diffusion models, recognized as the cutting-edge technique for data generation, demonstrate significant potential in tabular data…

机器学习 · 计算机科学 2024-07-26 Yixin Liu , Thalaiyasingam Ajanthan , Hisham Husain , Vu Nguyen

Advancements in data collection techniques and the heterogeneity of data resources can yield high percentages of missing observations on variables, such as block-wise missing data. Under missing-data scenarios, traditional methods such as…

统计方法学 · 统计学 2022-05-17 Wei Lan , Xuerong Chen , Tao Zou , Chih-Ling Tsai

Missing data in online reinforcement learning (RL) poses challenges compared to missing data in standard tabular data or in offline policy learning. The need to impute and act at each time step means that imputation cannot be put off until…

机器学习 · 统计学 2025-10-14 Kyla Chasalow , Skyler Wu , Susan Murphy

Missing data is a common concern in health datasets, and its impact on good decision-making processes is well documented. Our study's contribution is a methodology for tackling missing data problems using a combination of synthetic dataset…

机器学习 · 计算机科学 2022-11-08 Gift Khangamwa , Terence L. van Zyl , Clint J. van Alten

In real world clinical environments, training and applying deep learning models on multi-modal medical imaging data often struggles with partially incomplete data. Standard approaches either discard missing samples, require imputation or…

计算机视觉与模式识别 · 计算机科学 2025-09-16 Christoph Fürböck , Paul Weiser , Branko Mitic , Philipp Seeböck , Thomas Helbich , Georg Langs

Handling missing data is one of the most fundamental problems in machine learning. Among many approaches, the simplest and most intuitive way is zero imputation, which treats the value of a missing entry simply as zero. However, many…

机器学习 · 计算机科学 2020-02-07 Joonyoung Yi , Juhyuk Lee , Kwang Joon Kim , Sung Ju Hwang , Eunho Yang

Hollmann et al. (Nature 637 (2025) 319-326) recently introduced TabPFN, a transformer-based deep learning model for regression and classification on tabular data, which they claim "outperforms all previous methods on datasets with up to…

机器学习 · 计算机科学 2025-12-01 Qiong Zhang , Yan Shuo Tan , Qinglong Tian , Pengfei Li

Despite much work on advanced deep learning and generative modeling techniques for tabular data generation and imputation, traditional methods have continued to win on imputation benchmarks. We herein present UnmaskingTrees, a simple method…

机器学习 · 计算机科学 2025-07-24 Calvin McCarter

This paper introduces KZImputer, a novel adaptive imputation method for univariate time series designed for short to medium-sized missed points (gaps) (1-5 points and beyond) with tailored strategies for segments at the start, middle, or…

统计方法学 · 统计学 2025-07-08 Sergii Kavun

Tabular datasets are inherently heterogeneous, presenting significant challenges for developing pre-trained foundation models. The recently introduced transformer-based Tabular Prior-data Fitted Network v2 (TabPFN v2) achieves unprecedented…

机器学习 · 计算机科学 2025-06-12 Han-Jia Ye , Si-Yang Liu , Wei-Lun Chao

Tabular foundation models, such as TabPFNv2 and TabICL, have recently dethroned gradient-boosted trees at the top of predictive benchmarks, demonstrating the value of in-context learning for tabular data. We introduce TabICLv2, a new…

机器学习 · 计算机科学 2026-02-12 Jingang Qu , David Holzmüller , Gaël Varoquaux , Marine Le Morvan

Time series classification with missing data is a prevalent issue in time series analysis, as temporal data often contain missing values in practical applications. The traditional two-stage approach, which handles imputation and…

机器学习 · 计算机科学 2024-08-13 Pengshuai Yao , Mengna Liu , Xu Cheng , Fan Shi , Huan Li , Xiufeng Liu , Shengyong Chen

Tabular data is a fundamental form of data structure. The evolution of table analysis tools reflects humanity's continuous progress in data acquisition, management, and processing. The dynamic changes in table columns arise from…

人工智能 · 计算机科学 2026-01-28 Xinda Chen , Zhen Xing , Hanyu Zhang , Weimin Tan , Bo Yan

Standard tabular benchmarks mainly focus on the evaluation of a model's capability to interpolate values inside a data manifold, where models good at performing local statistical smoothing are rewarded. However, there exists a very large…

机器学习 · 计算机科学 2026-02-04 Zerui Cheng , Jiashuo Liu , Jianzhu Yao , Pramod Viswanath , Ge Zhang , Wenhao Huang

Deep generative models for engineering design often require substantial computational cost, large training datasets, and extensive retraining when design requirements or datasets change, limiting their applicability in real-world…

机器学习 · 计算机科学 2026-02-04 Ke Wang , Yifan Tang , Nguyen Gia Hien Vu , Faez Ahmed , G. Gary Wang

Most practical data science problems encounter missing data. A wide variety of solutions exist, each with strengths and weaknesses that depend upon the missingness-generating process. Here we develop a theoretical framework for training and…

机器学习 · 计算机科学 2022-11-15 Jahan C. Penny-Dimri , Christoph Bergmeir , Julian Smith

Computing the importance of features in supervised classification tasks is critical for model interpretability. Shapley values are a widely used approach for explaining model predictions, but require direct access to the underlying model,…

机器学习 · 计算机科学 2026-05-18 Joao Fonseca , Julia Stoyanovich