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incomplete multi-view datasets

Incomplete multi-view datasets are collections of data where individual samples are represented across multiple distinct modalities, feature spaces, or perspectives, but some samples are missing observations in one or more of these views. Unlike standard multi-view datasets where every instance possesses a complete set of features across all viewpoints, incomplete multi-view datasets exhibit missing views caused by data collection failures, sensor limitations, privacy constraints, or partial observations. In machine learning and data mining, these datasets present significant analytical challenges, requiring specialized representation learning, imputation, and alignment techniques to capture consensus and complementary information across available views without discarding instances that lack full view coverage.

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GCFAgg: Global and Cross-View Feature Aggregation for Multi-View Clustering

GCFAgg: Global and Cross-View Feature Aggregation for Multi-View Clustering

Weiqing Yan, Yuanyang Zhang, Chenlei Lv, Chang Tang, Guanghui Yue, Liang Liao, Weisi Lin

OrganizationsChina University of GeosciencesNanyang Technological UniversityShenzhen UniversityYantai University

Why you should read this

Proposes a global and cross-view feature aggregation framework that integrates transformer-based sample relationships with structure-guided contrastive learning to boost multi-view clustering performance on both complete and incomplete datasets.

Multi-view clustering can partition data samples into their categories by learning a consensus representation in unsupervised way and has received more and more attention in recent years. However, most existing deep clustering methods learn consensus representation or view-specific representations from multiple views via view-wise aggregation way, where they ignore structure relationship of all samples. In this paper, we propose a novel multi-view clustering network to address these problems, called Global and Cross-view Feature Aggregation for Multi-View Clustering (GCFAggMVC). Specifically, the consensus data presentation from multiple views is obtained via cross-sample and cross-view feature aggregation, which fully explores the complementary of similar samples. Moreover, we align the consensus representation and the view-specific representation by the structure-guided contrastive learning module, which makes the view-specific representations from different samples with high structure relationship similar. The proposed module is a flexible multi-view data representation module, which can be also embedded to the incomplete multi-view data clustering task via plugging our module into other frameworks. Extensive experiments show that the proposed method achieves excellent performance in both complete multi-view data clustering tasks and incomplete multi-view data clustering tasks.

Added

2026-09-26