Author

Jia-Jing Xu

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Preprint Oct 2026

PinGER: Token-Efficient Generative Retrieval with Semantic IDs

Generative retrieval replaces nearest-neighbor search with token-by-token decoding of an item's semantic ID (SID). But existing SID-based methods primarily use L levels of tokens sequentially to represent each item in the input history. As a result, a fixed context window holds L times fewer items than it would with on...

Xin-Yi Li, Sujan Reddy Ale, Yi-Ping Hsu et al. · 0 citations

Book Open access Sep 2026

TransAct V2: Production System for Lifelong User Sequence Modeling at Scale

This work presents TransAct V2, a production ranking model deployed at Pinterest serving over 630 million users, that addresses challenges through a dual-path training-serving architecture with request-level deduplication and int8 quantization and provides a reproducible blueprint for practitioners building large-scale...

Xue Xia, S. Joshi, Kousik Rajesh et al. · Proceedings of the 20th ACM... · 0 citations