Update README.md

README.md

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 arxiv: 2509.12073
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-# CEP-IP: An Explainable Framework for Cell Subpopulation Identification in Single-cell Transcriptomics (by Kah Keng Wong, Sep 2025)
-# [arXiv Preprint](https://arxiv.org/abs/2509.12073))
+# CEP-IP: An Explainable Framework for Cell Subpopulation Identification in Single-cell Transcriptomics (by Kah Keng Wong, Sep 2025) ([arXiv Preprint](https://arxiv.org/abs/2509.12073))
 
 ## 📊 Dataset Overview
 This dataset contains processed single-cell RNA-seq data from prostate tissue samples, including both tumor and benign samples from seven prostate cancer (PCa) patients, of publicly-available dataset obtained from: https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE185344