Tencent
Posted 2w ago

腾讯营销—端到端广告推荐大模型研究

Tencent
Beijing, China
OnsiteInternship
Responsibilities
  • researching models
  • designing systems
  • optimizing training
Requirements
  • Master's or above in CS/AI/ML/math
  • Strong algorithms and programming
  • Experience with recommendation systems
  • Large models
  • Distributed training, and co-design of algorithm and engineering
Technical tools mentioned
PyTorchTensorFlow

Job description

课题详情

课题背景:

当前广告推荐系统普遍沿用"召回—粗排—精排"的漏斗式级联链路,各阶段目标割裂、算力与样本空间不一致,误差层层传递,且工程约束反向限制了模型能力上限。随着大模型 Scaling Law 在各领域被验证,业界开始探索用统一模型直接建模从候选到最终排序的全过程。本课题旨在打破传统级联范式,通过算法与工程、业务与技术的联合设计(co-design / re-design),构建端到端的广告推荐大模型,释放全链路一致优化的潜力。

课题挑战:

1、链路重构:如何用统一模型建模数十亿量级候选集,在打破召粗精分治的同时满足在线毫秒级延迟与算力预算,需要算法与工程深度协同的 co-design;

2、目标一致性:端到端建模需在单一模型内协调召回的多样性、排序的精准性与业务多目标(CTR/CVR/GMV/ROI)之间的冲突,避免局部最优;

3、样本与训练:全链路联合建模面临严重的样本选择偏差(SSB)与曝光偏差,如何构造无偏训练信号、稳定超大规模稀疏模型的训练是核心难点;

4、系统协同重设计:模型结构、特征体系、检索索引与在线服务需整体 re-design,任何单点优化都可能被系统瓶颈抵消。

具体工作:

1、研发端到端广告推荐大模型,探索召粗精一体化的新范式与统一建模结构;

2、联合工程侧完成检索、索引、在线服务的协同 re-design,打通算法与系统边界;

3、攻关全链路无偏训练、多目标一致优化与规模化扩展,持续突破链路效果天花板。

课题要求

1、硕士研究生及以上学历,计算机科学、人工智能、机器学习、应用数学等相关领域;

2、对推荐系统与大模型技术有浓厚兴趣,具备扎实的算法与数据结构基础和优秀的编程能力,熟悉主流深度学习框架(PyTorch/TensorFlow);

3、拥有扎实的机器学习基础,在推荐系统、大语言模型(LLM)、生成式建模等方向有深入理解;对召回/排序链路、序列建模、大规模稀疏模型有实践经验者优先;

4、有大规模分布式训练、算法与工程协同优化(co-design)经验,或在国际竞赛(包括但不限于 ACM-ICPC、数学建模大赛)获奖、在国际顶会(包括但不限于 KDD、NeurIPS、ICML、ICLR、SIGIR、RecSys 等)发表论文者优先;

5、优秀的分析与解决问题能力,敢于挑战传统架构、对突破推荐系统链路瓶颈充满激情。

About Tencent

Provides integrated internet services, digital entertainment, and cloud technology.

Year founded
1998
Employees
112771
Organization type
Public
Headquarters
CN

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