Gene expression and cancer classification

Derniers papiers

• Hierarchical Sparse Bayesian Multitask Learning for Disease Prediction in Pooled Microbiome Studies

  Haonan Zhu, Andre R. Goncalves, Camilo Valdes, Hiranmayi Ranganathan, Boya Zhang, Jose Manuel Mart\'i, Car Reen Kok, Monica K. Borucki, Nisha J. Mulakken, James B. Thissen, Crystal Jaing, Alfred Hero, Nicholas A. Be · 23 septembre 2026

  This paper proposes a hierarchical Bayesian multitask learning model that is applicable to the general multi-task binary classification learning problem where the model assumes a shared sparsity structure across different tasks. We derive a computationally efficient inference algorithm based on vari…

• Structure is not mechanism: high-gain gated-FFN rows across text and genomic foundation models

  Alexandros Tzanakakis, Aris Karatzikos, Ilias Georgakopoulos-Soares · 17 septembre 2026

  A small number of unusually high-gain parameters can exert disproportionate effects in transformer language models, but whether analogous structures recur in genomic foundation models and whether structural geometry determines functional importance remains unknown. We analyzed high-gain rows in gate…

• Advancing Interaction-Sensitive Feature Selection: Novel Relief-Based Algorithms, Expanded Comparisons, and Recommendations for Biomedical Data Mining

  Kia Kazemi-Nia, Harsh Bandhey, Philip J. Freda, Ryan J. Urbanowicz · 31 août 2026

  As a precursor to high-dimensional biomedical data modeling, reliable feature selection can reduce computational expense, improve modeling performance, and yield simpler, more interpretable models. However, most filter-based feature selection methods struggle to detect feature interactions, while wr…

• ARISE: An adaptive residual-informed stability ensemble for feature selection in small-sample biomedical omics

  Zardad Khan, Amjad Ali, Naz Gul, Sheema Gul, Saeed Aldahmani · 18 août 2026

  Objective: Small-sample molecular classification requires feature selectors that identify predictive, stable, and nonredundant subsets for binary and multiclass outcomes. We propose ARISE (Adaptive Residual-Informed Stability Ensemble), which integrates complementary relevance signals, class-balance…

• Nonlinear multi-study sparse factor analysis

  Gemma E. Moran, Anandi Krishnan · 12 août 2026

  High-dimensional data often exhibit variation that can be captured by lower-dimensional factors. For high-dimensional data from multiple studies, one goal is to understand which underlying factors are common to all studies, and which factors are study-specific. As a particular example, we consider p…

• Uncertainty-Aware Deep Learning for Genomics Applications: Insights from an Empirical Study

  Sepideh Saran, Mahsa Ghanbari, Uwe Ohler · 12 août 2026

  Deep learning models have emerged as the standard computational tool for a wide range of applications in genomics. Yet, uncertainty quantification (UQ) -- and more specifically, the reliability of different uncertainty estimates in this domain -- has received little systematic attention. This work p…

• Hit Selection Using SSMD-Based Machine Learning Performance Metrics in High-Throughput Screening Assays

  Xiaohua Douglas Zhang · 11 août 2026

  High-throughput screening (HTS) assays are central to early-stage drug discovery but are often limited by extreme data sparsity, as primary screens typically use only a single replicate per test substance. This sparsity makes conventional machine-learning performance metrics, such as sensitivity, sp…

• The Cost of Binarizing Survival Outcomes in Clinical Prognostic Modeling

  Shashank Yadav, David M. Routman, Andrew Y. K. Foong · 6 août 2026

  Survival analysis is an established framework for analyzing time-to-event data, yet many clinical machine learning studies still binarize the outcome before model training. This practice excludes censored patients, collapses temporal information into a single threshold, and can affect which features…

• Evaluation and Prognostic Validation of Deep Regression Models for WSI-Based Gene-Expression Prediction

  Fredrik K. Gustafsson, Constance Boissin, Johan Vallon-Christersson, Mattias Rantalainen · 24 juillet 2026

  Gene-expression profiling is widely used in research and central to many areas of precision oncology, but remains costly and not universally accessible. Recent advances in computational pathology enable prediction of transcriptomic profiles directly from hematoxylin and eosin (H&E)-stained whole-sli…

• Cross-Cluster Weighted Forests

  Maya Ramchandran, Rajarshi Mukherjee, Giovanni Parmigiani · 17 juillet 2026

  Building trustworthy machine learning algorithms for biological applications requires adapting to data heterogeneity from different sources, batches, distributions, or studies. We propose the 'Cross-Cluster Weighted Forest' (CCWF), an ensembling approach that explicitly leverages heterogeneity in th…

• When to Truncate a Feature Ranking: A Residual-Overlap Stopping Rule for Subset Selection

  Jesus S. Aguilar-Ruiz · 1 juillet 2026

  Feature rankings are widely used in supervised feature selection because they are simple, scalable and easy to interpret. Variables are first ranked by a relevance score, and a subset is then obtained by retaining the top-ranked variables. Although the first stage has been extensively studied, the s…

• ERICA: Quantifying Replicability of Cluster Analysis

  Siamak K. Sorooshyari, Manuel A. Rivas, Robert Tibshirani · 2 juin 2026

  Despite being ubiquitous in science, clustering remains a technique whose results are not quantitatively scrutinized via a framework. We present an analysis called evaluating replicability via iterative clustering assignments (ERICA) that is applied to a dataset to determine whether clusters are ide…

• Innovative Silicosis and Pneumonia Classification: Leveraging Graph Transformer Post-hoc Modeling and Ensemble Techniques

  Bao Q. Bui, Tien T. T. Nguyen, Duy M. Le, Cong Tran, Cuong Pham · 27 mai 2026

  This paper presents a comprehensive study on the classification and detection of Silicosis-related lung inflammation. Our main contributions include 1) the creation of a newly curated chest X-ray (CXR) image dataset named SVBCX that is tailored to the nuances of lung inflammation caused by distinct …

• Querying structural and functional niches on spatial transcriptomics data

  Mo Chen, Minsheng Hao, Xinquan Liu, Lin Deng, Peng Liu, Chen Li, Dongfang Wang, Kui Hua, Liang Guo, Xuegong Zhang, Lei Wei · 26 mai 2026

  Cells in multicellular organisms coordinate to form structural and functional niches. With spatial transcriptomics (ST) enabling gene expression profiling in spatial contexts, it has been revealed that spatial niches serve as cohesive and recurrent units in physiological and pathological processes. …

• RNA-FM: Flow-Matching Generative Model for Genome-wide RNA-Seq Prediction

  Yaxuan Song, Jianan Fan, Tianyi Wang, Qiuyue Hu, Hang Chang, Heng Huang, Weidong Cai · 13 mai 2026

  Histopathology whole-slide images (WSIs) are routinely acquired in clinical practice and contain rich tissue morphology but lack direct molecular architecture and functional programs defining pathological states, whereas RNA sequencing (RNA-seq) provides genome-wide transcriptional profiles at subst…

• BioBlobs: Unsupervised Discovery of Functional Substructures for Protein Function Prediction

  Xin Wang, Kaiwen Shi, Carlos Oliver · 13 mai 2026

  Protein function is driven by cohesive substructures, such as catalytic triads, binding pockets, and structural motifs, that occupy only a small fraction of a protein's residues. Yet existing pipelines built on protein encoders do not model proteins at the substructure level, leaving the central bio…

• Feature Dimensionality Outweighs Model Complexity in Breast Cancer Subtype Classification Using TCGA-BRCA Gene Expression Data

  Meena Al Hasani · 8 mai 2026

  Accurate classification of breast cancer subtypes from gene expression data is critical for diagnosis and treatment selection. However, such datasets are characterized by high dimensionality and limited sample size, posing challenges for machine learning models. In this study, we evaluate the impa…

• Disease Is a Spectral Perturbation

  John D. Mayfield, Matthew S. Rosen · 6 mai 2026

  We propose a novel method of understanding disease transformation from a healthy baseline with biomarker-level explainability. By modeling the biomarker covariance matrices of healthy controls and disease states, the perturbation can be individually characterized to accomplish mechanistic explanatio…

• Biconvex Biclustering

  Sam Rosen, Eric C. Chi, Jason Xu · 7 avril 2026

  This article proposes a biconvex modification to convex biclustering in order to improve its performance in high-dimensional settings. In contrast to heuristics that discard a subset of noisy features a priori, our method jointly learns and accordingly weighs informative features while discovering b…

• KGroups: A Versatile Univariate Max-Relevance Min-Redundancy Feature Selection Algorithm for High-dimensional Biological Data

  Malick Ebiele, Malika Bendechache, Rob Brennan · 31 mars 2026

  This paper proposes a new univariate filter feature selection (FFS) algorithm called KGroups. The majority of work in the literature focuses on investigating the relevance or redundancy estimations of feature selection (FS) methods. This has shown promising results and a real improvement of FFS meth…

• Disentangled Multi-modal Learning of Histology and Transcriptomics for Cancer Characterization

  Yupei Zhang, Xiaofei Wang, Anran Liu, Lequan Yu, Chao Li · 3 mars 2026

  Histopathology remains the gold standard for cancer diagnosis and prognosis. With the advent of transcriptome profiling, multi-modal learning combining transcriptomics with histology offers more comprehensive information. However, existing multi-modal approaches are challenged by intrinsic multi-mod…

• Supervised Graph Contrastive Learning for Gene Regulatory Networks

  Sho Oshima, Yuji Okamoto, Taisei Tosaki, Ryosuke Kojima · 20 février 2026

  Graph Contrastive Learning (GCL) is a powerful self-supervised learning framework that performs data augmentation through graph perturbations, with growing applications in the analysis of biological networks such as Gene Regulatory Networks (GRNs). The artificial perturbations commonly used in GCL, …

• MAFS: Multi-head Attention Feature Selection for High-Dimensional Data via Deep Fusion of Filter Methods

  Xiaoyan Sun, Qingyu Meng, Yalu Wen · 7 janvier 2026

  Feature selection is essential for high-dimensional biomedical data, enabling stronger predictive performance, reduced computational cost, and improved interpretability in precision medicine applications. Existing approaches face notable challenges. Filter methods are highly scalable but cannot capt…

• MFAI: A Scalable Bayesian Matrix Factorization Approach to Leveraging Auxiliary Information

  Zhiwei Wang, Fa Zhang, Cong Zheng, Xianghong Hu, Mingxuan Cai, Can Yang · 6 janvier 2026

  In various practical situations, matrix factorization methods suffer from poor data quality, such as high data sparsity and low signal-to-noise ratio (SNR). Here, we consider a matrix factorization problem by utilizing auxiliary information, which is massively available in real-world applications, t…

• Sparse Convex Biclustering

  Jiakun Jiang, Dewei Xiang, Chenliang Gu, Wei Liu, Binhuan Wang · 6 janvier 2026

  Biclustering is an essential unsupervised machine learning technique for simultaneously clustering rows and columns of a data matrix, with widespread applications in genomics, transcriptomics, and other high-dimensional omics data. Despite its importance, existing biclustering methods struggle to me…