2026 Preprint When Can Digital Personas Reliably Approximate Human Survey Findings? Mumin Jia, Yilin Chen, Divya Sharma, and 1 more author 2026 PDF 2025 NeurIPS Dynamics of Spontaneous Topic Changes in Next Token Prediction with Self-Attention Mumin Jia and Jairo Diaz-Rodriguez In The Thirty-ninth Annual Conference on Neural Information Processing Systems, 2025 PDF Preprint Unsupervised Text Segmentation via Kernel Change-Point Detection on Sentence Embeddings Jairo Diaz-Rodriguez and Mumin Jia 2025 PDF