arXiv:2607.18796cs.IR2026-07被引 2

让搜索结果更赚钱:TSGR让推荐系统同时考虑相关性和商品价值。

TSGR: Taobao Search Generative Retrieval

论文配图:TSGR: Taobao Search Generative Retrieval
图 1 · 摘自论文原文
  • 用查询感知的并行编码方式,把商品价值信息融入检索标识
  • 引入价值感知排序模块,单模型完成检索与预排序,提升商业效果
  • 在淘宝上线后,交易额、用户访问量等关键指标显著提升

生成式检索(GR)在电商搜索中展现出巨大潜力,通过训练单一自回归模型直接生成目标商品的语义ID(SID)。然而现有GR系统主要优化语义匹配,忽视商品业务价值:SID构建缺乏价值感知,候选商品排序也未利用商品侧信息。导致高价值商品常被遗漏或降权,限制了下游商业影响。这一问题在淘宝搜索等以业务目标为核心的工业场景中尤为突出。为此,我们提出淘宝搜索生成式检索(TSGR),一个将价值感知融入物品表征与候选排序的统一框架。1)在物品表征方面,TSGR引入查询感知并行SID(QP-SID),基于查询-商品统计构建并行码本,将高价值且相关商品分配更优的令牌索引;2)在候选排序方面,设计价值感知排序模块(VRM),与生成式检索联合优化,使单模型无缝承担检索与预排序任务,无需独立预排序阶段。渐进式训练流程进一步对齐语义相关性、用户偏好与业务目标。离线实验显示,TSGR在HR@1000上提升9.16%,线上A/B测试验证其有效性,带来+0.43%的IPV、+1.12%的交易量和+1.64%的GMV增长。TSGR已全面投入生产。

原文摘要 · Abstract (English)

Generative retrieval (GR) has demonstrated strong promise for industrial e-commerce search by training a single autoregressive model to directly generate the Semantic IDs (SIDs) of target items. However, existing GR systems are primarily optimized for semantic matching and remain insensitive to item business value: SID construction is value-unaware, and candidates are ranked without access to item side-info. Consequently, high-value items are often missed or deprioritized at the retrieval stage, limiting downstream business impact. This limitation is particularly critical in industrial settings such as Taobao Search, where business objectives are central to system design. To address this, we propose $\textbf{T}$aobao $\textbf{S}$earch $\textbf{G}$enerative $\textbf{R}$etrieval ($\textbf{TSGR}$), a unified generative retrieval framework that incorporates value awareness into both item representation and candidate ranking. 1) For item representation, TSGR introduces $\textbf{Query-aware Parallel SID (QP-SID)}$, which encodes query-conditioned value orderings into the SID construction by building parallel codebooks derived from query-item statistics, so that higher-value and query-relevant items are assigned better token indices. 2) For candidate ranking, we introduce a $\textbf{Value-aware Ranking Module (VRM)}$ that is built upon and jointly optimized with the GR, enabling a single model to seamlessly serve as both retriever and pre-ranker without a dedicated pre-ranking stage. A progressive training pipeline further aligns the model with semantic relevance, user preferences, and business objectives. Offline experiments show that TSGR achieves a 9.16\% improvement in HR@1000, and online A/B tests further validate its effectiveness, yielding gains of +0.43\% in IPV, +1.12\% in Transaction Count, and +1.64\% in GMV. TSGR has been fully deployed in production.

生成式检索电商搜索价值感知排序优化

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