{
  "id": "chen2026polymorphic",
  "title": "Polymorphic Universal Transformer",
  "authors": "Yilong Chen, Zitian Gao, Yihao Xiao, Jason Klein Liu, Xinyu Yang, Yifan Luo, Tingwen Liu, Haoming Luo, Zhengmao Ye, Ran Tao, Bryan Dai",
  "first_public": "2026-06-23",
  "first_public_source": "https://github.com/acl-org/acl-anthology/commit/ba4f39e29e78167a188821ad9e5ce796a7f8b09a",
  "first_public_note": "ACL Anthology release date.",
  "added_at": "2026-11-09",
  "venue": "ACL 2026",
  "doi": "10.18653/v1/2026.acl-long.1809",
  "paper_url": "https://aclanthology.org/2026.acl-long.1809/",
  "lens": [
    "recurrent",
    "analysis"
  ],
  "representation": [
    "hidden-state"
  ],
  "computation": [
    "recurrent",
    "depth-wise"
  ],
  "training": [
    "pretraining"
  ],
  "questions": [
    "architecture",
    "scaling",
    "efficiency"
  ],
  "evidence": [
    "empirical",
    "mechanistic"
  ],
  "modality": [
    "language",
    "symbolic"
  ],
  "summary": "Varies which feed-forward units are active across loops of a shared transformer and strengthens nonlinear attention. Studies how this affects hidden-state rank, depth scaling, and the computation needed for reasoning.",
  "provenance": "Primary-source literature review, 2026-11-09",
  "author_names": [
    "Yilong Chen",
    "Zitian Gao",
    "Yihao Xiao",
    "Jason Klein Liu",
    "Xinyu Yang",
    "Yifan Luo",
    "Tingwen Liu",
    "Haoming Luo",
    "Zhengmao Ye",
    "Ran Tao",
    "Bryan Dai"
  ],
  "record_url": "https://latent-implicit-thinking.github.io/papers/chen2026polymorphic/",
  "legacy_record_url": "https://latent-implicit-thinking.github.io/papers/#paper-chen2026polymorphic",
  "citation_date": "2026-06-23",
  "json_url": "https://latent-implicit-thinking.github.io/papers/chen2026polymorphic/record.json",
  "markdown_url": "https://latent-implicit-thinking.github.io/papers/chen2026polymorphic/index.md",
  "bibtex_url": "https://latent-implicit-thinking.github.io/papers/chen2026polymorphic/citation.bib",
  "csl_url": "https://latent-implicit-thinking.github.io/papers/chen2026polymorphic/citation.csl.json",
  "publication": {
    "title": "Polymorphic Universal Transformer",
    "author_names": [
      "Yilong Chen",
      "Zitian Gao",
      "Yihao Xiao",
      "Jason Klein Liu",
      "Xinyu Yang",
      "Yifan Luo",
      "Tingwen Liu",
      "Haoming Luo",
      "Zhengmao Ye",
      "Ran Tao",
      "Bryan Dai"
    ],
    "year": 2026,
    "type": "paper-conference",
    "container_title": "Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)",
    "publisher": "Association for Computational Linguistics",
    "doi": "10.18653/v1/2026.acl-long.1809",
    "pages": "39001-39013",
    "url": "https://aclanthology.org/2026.acl-long.1809/",
    "source_url": "https://aclanthology.org/2026.acl-long.1809.pdf",
    "verified_at": "2026-11-09"
  },
  "publication_bibtex_url": "https://latent-implicit-thinking.github.io/papers/chen2026polymorphic/publication.bib",
  "publication_csl_url": "https://latent-implicit-thinking.github.io/papers/chen2026polymorphic/publication.csl.json"
}