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Paper reveals graph tokenization trade-offs for Transformer expressivity

A new paper explores the critical role of graph tokenization in applying Transformers to graph learning tasks. Researchers demonstrate that the method used to convert graph structures into tokens significantly impacts a Transformer's expressivity and the depth required for computations. The study proves that certain tokenizations, like random-walk, are inherently lossy, while others, like spectral tokenization, may be ill-conditioned for specific tasks. The findings suggest that combining complementary tokenization strategies can enhance a Transformer's ability to leverage diverse structural signals for improved performance. AI

IMPACT Highlights how graph tokenization methods fundamentally affect Transformer performance in graph learning tasks.

RANK_REASON The cluster contains an academic paper detailing theoretical findings and experimental validation on a specific machine learning technique.

Read on arXiv cs.LG →

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COVERAGE [2]

  1. arXiv cs.LG TIER_1 English(EN) · Maya Bechler-Speicher, Gilad Yehudai, Gil Harari, Clayton Sanford, Amir Globerson, Joan Bruna ·

    Lost in Tokenization: Fundamental Trade-offs in Graph Tokenization for Transformers

    arXiv:2605.22471v1 Announce Type: new Abstract: Transformers have become a central architecture for graph learning, but their application to graphs requires first choosing a tokenization: a graph-to-token map that determines which structural information is exposed at the input. I…

  2. arXiv cs.LG TIER_1 English(EN) · Joan Bruna ·

    Lost in Tokenization: Fundamental Trade-offs in Graph Tokenization for Transformers

    Transformers have become a central architecture for graph learning, but their application to graphs requires first choosing a tokenization: a graph-to-token map that determines which structural information is exposed at the input. In this work, we show that this choice is a funda…