Tencent
Posted 2w ago

元宝-基于多模态大模型的搜索关键技术研究

Tencent
Beijing, Beijing, China
OnsiteFull Time
Responsibilities
  • researching multimodal
  • developing models
  • building systems
Requirements
  • Master's or PhD in CS/AI/automation/electronic information/mathematics
  • Strong research background with top-conference publications preferred
  • Expertise in multimodal representation
  • LLM/VLM methods
  • Python and PyTorch proficiency
Technical tools mentioned
PythonPyTorch

Job description

课题详情

课题背景:

多模态搜索面临跨模态语义鸿沟、检索效率与精度失衡、多轮多模态交互记忆缺失等核心难题。亟需攻克多模态信息的统一表征、高效检索与全链路协同优化技术,突破现有搜索系统在多模态场景下的能力瓶颈,满足用户在复杂知识问答、跨模态内容溯源、个性化多模交互等场景的高满意度需求。

课题挑战:

1. 多模态统一表征与跨模态对齐

攻克多模态的统一表征技术,优化图像/语音/视频编码器与模态适配器的结构设计,结合持续预训练/后训练等策略,破解跨模态语义鸿沟难题;探索多模态信息的层级化表征机制,提升细粒度语义的对齐精度等。

2. 多模态生成式检索

突破基于大模型的多模态生成式检索技术,设计高效的生成式检索框架和算法,提升高质多模态内容的召回率与相关性、检索效率等;

3. 多模态搜索排序与多目标优化

探索多模态场景下的大模型排序(VLM Ranking)核心技术,融合多模态内容的语义特征、质量特征与用户偏好特征等,研究Reasoning Ranking、多模态特征融合排序等方向;构建“精度-效率-用户满意度”等多目标优化框架,提升排序结果的鲁棒性与综合适配性;

4. 多轮多模态交互与全链路协同

研究多轮对话中多模态历史信息的存储、检索与应用机制,实现用户个性化偏好的精准捕捉与动态适配;协同优化多模态查询改写、召回、排序、LLM总结全链路,解决各环节的任务对齐(Task Alignment)问题,提升多模态检索整体效果。

具体工作:

参与多模态Agent理解、跨模态表征、多模态检索能力和系统建设,突破现有搜索系统在多模态场景下的能力瓶颈,满足元宝用户在复杂知识问答、跨模态内容溯源、个性化多模交互等场景的高满意度需求。

课题要求

1、来自计算机、人工智能、自动化、电子信息或数学等相关专业的博士/硕士同学。在多模态大模型(VLM)、大语言模型(LLM)或视觉推理等领域有深厚学术背景或顶会(CVPR、ECCV、ICLR、ACL、NeurIPS等)第一作者论文发表经历者优先;

2、掌握多模态表征、多模态理解、思维链(CoT)、强化学习(DPO/PPO)等算法及应用;熟练掌握计算机视觉和图像处理相关的基本算法及应用,精通 Python 语言,熟练掌握 PyTorch 等主流深度学习框架及大模型训练推理工具;

3、具备卓越的自驱动力与逻辑拆解能力,能够从复杂现象中提炼科学问题;沟通协作能力强,拥有极佳的学术视野,能快速研读并复现前沿论文,对探索通用人工智能(AGI)具有强烈的热情。

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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