Author

Xin Wang

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Preprint Sep 2026

Pre- and Post-Treatment Brain Metastases Segmentation Using nnU-Net with Post-Processing for BraTS 2026

Brain metastases exhibit high inter-lesion variability in size, enhancement pattern, and post-treatment appearance, making volumetric segmentation of both pre- and post-treatment cases the central challenge of the BraTS 2026 Task 1 (Brain Metastases). We build a pragmatic pipeline on a 5-fold nnU-Net ResEnc-L ensemble,...

Hao-Bin Liu, Xin Wang · 0 citations

#artificial intelligence Preprint Sep 2026

Per-Matrix Optimality Is Not Enough: Three-Level Optimization for Low-Rank LLM Compression

A three-level chain that widens optimization scope from individual matrices to Transformer blocks to the full model, with improvements only in perplexity and compression fidelity; downstream accuracy remains well below the dense model.

Hui-Cheng Zhang, Xi-Yao Feng, Ze-Tong Li et al. · 0 citations