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Open nowPosted 170 days ago

AIGC大模型算法专家-国际商业化(北京/上海)

ByteDance19,268 open roles

Where
Beijing, Chinese Mainland
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Your applicationOpen nowAIGC大模型算法专家-国际商业化(北京/上海)ByteDance · Beijing, Chinese Mainland
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The clock on this job

Early applications get read.

11.9% of postings close within 7 days. Measured by our own scanner across the market. ByteDance postings stay open a median of 9 days.

Share of postings closed within
  1. 2.1%1 day
  2. 4.4%3 days
  3. 11.9%7 days
  4. 18.6%14 days
  5. 35.6%30 days
  6. 45.1%60 days
This job: posted 170 days ago

ByteDance median: 9 days open

The posting

1、进行生成式人工智能领域的前沿算法研究与模型优化,聚焦图像、视频、数字人、多模态生成等方向,持续突破生成质量、可控性、采样效率与训练稳定性的技术边界; 2、生成模型结构创新:深度参与Diffusion、DiT、MMDiT、Flow Matching、Rectified Flow、Autoregressive、Masked Generative Transformer等主流生成架构的设计与改进,探索新型骨干网络、时空注意力机制、条件注入方式(Cross-Attention、AdaLN、In-Context Conditioning)、3D VAE/Tokenizer设计、长序列时序建模等关键技术,提升模型在图像与视频生成任务上的表现上限; 3、数据生产与数据工程:主导高质量训练数据的构建链路,包括多阶段数据清洗(美学打分、运动一致性过滤、OCR/Watermark检测)、自动标注(Recaption、Dense Caption、镜头语言标注)、合成数据生成、Bucket分桶与分辨率策略、数据配比与课程学习(Curriculum Learning)设计,建立面向生成模型的数据飞轮与端到端质量评估体系; 4、后训练优化:应用与创新后训练方法,如SFT、DPO、IPO、KTO、Reward Modeling、RLHF及其针对Diffusion的变体(Diffusion-DPO、DDPO、ReFL),针对生成模型在美感、可控性、指令跟随、物理合理性、安全性等维度进行对齐与能力提升;探索Step Distillation、Consistency Distillation、Rectified Flow Distillation等少步采样后训练方法; 5、强化学习算法研究:探索并落地适用于生成模型的强化学习算法,包括PPO、GRPO、RLOO、Diffusion-DPO、DDPO、ReFL等,针对可微分Reward接入、采样轨迹信用分配、Reward Hacking、长视频稀疏奖励、训练稳定性与探索-利用平衡等关键问题进行算法创新。

1、硕士学位及以上,计算机科学、人工智能、自动化、电子信息等相关专业优先; 2、对Diffusion、DiT/MMDiT、Flow Matching/Rectified Flow、Consistency Models、Autoregressive等主流生成模型结构有深入理解与改进经验,熟悉噪声调度、Solver设计(DDIM、DPM-Solver、Heun)、Classifier-Free Guidance及其变体(CFG++、APG)等核心组件,清晰掌握图像或视频生成方向的SOTA方法演进脉络; 3、对生成模型/LLM/MLLM相关后训练技术,包括SFT、RLHF、DPO/IPO/KTO、Reward Modeling、Rejection Sampling等有实践或创新优化相关经验;具备Reward信号设计、偏好数据构建与去噪、训练稳定性调优、分布偏移控制(KL约束、Reference Model设计)等实战能力; 4、对PPO、GRPO、Diffusion-DPO、DDPO、ReFL等RL算法在生成模型中的应用有深度实践和理解;熟悉可微分Reward(ImageReward、HPS、VideoScore等)、轨迹采样与梯度回传、Reward Hacking缓解(Reward Ensemble、Early Stopping、KL Regularization)等关键技术; 5、对亿级规模训练数据的清洗、筛选、合成、配比策略有实践和理解;熟悉MLLM-based自动标注、美学/运动/一致性打分模型构建、数据去重(SemDeDup、MinHash)、分辨率/时长分桶训练等工程范式,具备面向生成任务的数据质量评估与迭代能力; 6、对生成模型结构创新、后训练对齐、强化学习、多模态统一生成、世界模型等前沿技术有持续跟踪和深度理解,熟悉近两年内主流开源工作的核心技术细节;有较强的研究能力,在会议上如CVPR/ICCV/ECCV/NeurIPS/ICML/ICLR/SIGGRAPH/ACL等发表论文者优先;在AIGC、生成模型、强化学习、多模态某个领域有较深入的研究,有代表工作(如高引论文以及热门GitHub repo)。

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