In online advertising scenario, sellers often create multiple creatives to provide comprehensive demonstrations, making it essential to present the most appealing design to maximize the Click-Through Rate (CTR). However, sellers generally struggle to consider users preferences for creative design, leading to the relatively lower aesthetics and quantities compared to Artificial Intelligence (AI)-based approaches. Traditional AI-based approaches still face the same problem of not considering user information while having limited aesthetic knowledge from designers. In fact that fusing the user information, the generated creatives can be more attractive because different users may have different preferences. To optimize the results, the generated creatives in traditional methods are then ranked by another module named creative ranking model. The ranking model can predict the CTR score for each creative considering user features. However, the two above stages are regarded as two different tasks and are optimized separately. In this paper, we proposed a new automated Creative Generation pipeline for Click-Through Rate (CG4CTR) with the goal of improving CTR during the creative generation stage. Our contributions have 4 parts: 1) The inpainting mode in stable diffusion is firstly applied to creative generation task in online advertising scene. A self-cyclic generation pipeline is proposed to ensure the convergence of training. 2) Prompt model is designed to generate individualized creatives for different user groups, which can further improve the diversity and quality. 3) Reward model comprehensively considers the multimodal features of image and text to improve the effectiveness of creative ranking task, and it is also critical in self-cyclic pipeline. 4) The significant benefits obtained in online and offline experiments verify the significance of our proposed method.

我们提出了一个新的自动化的点击率创意生成流水线（CG4CTR），旨在改进创意生成阶段的点击率。我们的贡献有4个方面：1）将填充模式应用于在线广告场景的创意生成任务。提出了一个自我循环生成流水线，以确保训练的收敛性。2）设计了提示模型，为不同用户群体生成个性化创意，进一步提高其多样性和质量。3）奖励模型的综合考虑图像和文本的多模态特征，以提高创意排序任务的有效性，也在自我循环流水线中起着重要作用。4）在线和离线实验中获得的显著优势验证了我们提出方法的重要性。

一种稳定扩散模型的点击率创新生成流程