AINR: Attention-Guided Implicit Neural Representations for Spatial Domain Identification in Spatial Transcriptomics

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ID: 325521
2026
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Abstract
Abstract Motivation Spatial transcriptomics measures gene expression together with spatial locations, but its data are noisy and sparse, and existing graph-based methods are complex and hard to scale. Results We present AINR, an end-to-end deep learning framework that models spatial transcriptomics data as a geometrically constrained continuous biological field. AINR combines implicit neural representations with a spatially-aware attention mechanism and a total variation regularization term, using a periodic sine activation function to map spatial coordinates directly to gene expression while preserving spatial smoothness without explicit adjacency matrices. Across six diverse datasets, AINR consistently outperforms existing methods in spatial domain identification and remains robust even under extreme data sparsity. Availability and implementation The code for AINR is available at https://github.com/XGD1122/AINR
Reference Key
openalex_W7203762221 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Yusen Zhang, Guodong Xiao, Ponian Li, Jian Liu
Journal Bioinformatics advances
Year 2026
DOI
10.1093/bioadv/vbag241
URL
Keywords Keywords not found

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