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Author

Xiao-Hang Zhang

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Review Open access Sep 2026

Periodic Variable Star Classification in Imbalanced Data: A Two-Stage Decoupled Approach with Multimodal Contrastive Learning

Large photometric surveys require classification methods that retain sensitivity to sparsely represented periodic variable-star classes. We present a two-stage decoupled multimodal network (TDMN) for imbalanced periodic-variable-star classification using phase-folded light curves, three-channel morphology images, and g...

Qing-Yu Lu, Feng Zhang, Zhi-Qiang Zou et al. · 0 citations
Sep 2026

Phase‐II Monitoring the Ratio of Population Means of a Bivariate Normal Distribution Based on Subgroup Samples

In various industrial contexts, there is a need for online monitoring of quality characteristics represented as the ratio of two normal random variables. This includes scenarios such as maintaining the correct proportion between ingredients or elements in a product, assessing product performance before and after spec...

An-An Tang, Xiao-Hang Zhang, P. Castagliola et al. · 0 citations

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