Cross-Country Code-Mixing Feeds Big-Market Data to Small Markets in Generative Recommendation

The paper proposes CMRec, a cross-country code-mixing method for generative recommendation that constructs a unified semantic codebook and mixes token-level interactions across countries with dual semantic and behavioral constraints, achieving significant gains on public and industrial datasets and a 1.77% ad revenue and 2.64% order increase in online A/B tests at Lazada.

CIKM 2026Code-MixingCross-Country Recommendation

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Cross-Country Code-Mixing Feeds Big-Market Data to Small Markets in Generative Recommendation