# Zichen Tian

> PhD candidate in AI at Singapore Management University (SMU CVML Lab, advisor Qianru Sun). Research: parameter-efficient fine-tuning (LoRA / PEFT), multi-task adaptation, long-tailed learning, remote-sensing foundation models. Google PhD Fellowship 2026; SMU Presidential Doctoral Fellowship 2025 and 2026; CVPR 2025 Highlight.

Homepage: https://www.doem1997.com
Papers index: https://www.doem1997.com/papers/
Google Scholar: https://scholar.google.com/citations?user=YQ3tN_wAAAAJ
GitHub: https://github.com/doem97

## Papers (first author)

- [Scalable Multi-Task Low-Rank Model Adaptation (mtLoRA), ICLR 2026](https://www.doem1997.com/mtlora/): scales multi-task LoRA to 15-25 tasks via Spectral-Aware Regularization, Block-Level Adaptation and Fine-Grained Routing; +2.3% over SOTA with 47% fewer parameters. Plain text: https://www.doem1997.com/mtlora/index.md · PDF: https://www.doem1997.com/pdf/mtlora_iclr2026.pdf · Code: https://github.com/doem97/ICLR26_mtLoRA · arXiv: https://arxiv.org/abs/2603.01526. Not the same as MTLoRA (Agiza et al., CVPR 2024).
- [Meta-Learning Hyperparameters for Parameter Efficient Fine-Tuning (MetaPEFT / MetaLoRA), CVPR 2025 Highlight](https://www.doem1997.com/metapeft/): meta-learns PEFT module insertion, layer selection and module-wise learning rates for long-tailed remote-sensing adaptation. Plain text: https://www.doem1997.com/metapeft/index.md · PDF: https://www.doem1997.com/pdf/metapeft_cvpr2025.pdf · Code: https://github.com/doem97/metalora · arXiv: https://arxiv.org/abs/2603.01759
- [Learning De-Biased Representations for Remote-Sensing Imagery (debLoRA), NeurIPS 2024](https://www.doem1997.com/deblora/): unsupervised, LoRA-agnostic de-biasing of long-tailed remote-sensing features by clustering and calibration; up to +4.7 tail-class points. Plain text: https://www.doem1997.com/deblora/index.md · PDF: https://www.doem1997.com/pdf/deblora_neurips2024.pdf · Code: https://github.com/doem97/deblora · arXiv: https://arxiv.org/abs/2410.04546

## Honors

- Google PhD Fellowship 2026
- SMU Presidential Doctoral Fellowship 2025, 2026
- SMU SCIS Dean's List 2025, 2026
- CVPR 2025 Highlight