It is well known that training a denoising score-based diffusion models requires tens of thousands of epochs and a substantial number of image data to train the model. In this paper, we propose to increase the efficiency in training score-based diffusion models. Our method allows us to decrease the number of epochs needed to train the diffusion model. We accomplish this by solving the log-density Fokker-Planck (FP) Equation numerically to compute the score \textit{before} training. The pre-computed score is embedded into the image to encourage faster training under slice Wasserstein distance. Consequently, it also allows us to decrease the number of images we need to train the neural network to learn an accurate score. We demonstrate through our numerical experiments the improved performance of our proposed method compared to standard score-based diffusion models. Our proposed method achieves a similar quality to the standard method meaningfully faster.

通过解决数值上求解对数密度福克-普朗克方程以在训练之前计算分数来提高基于分数的扩散模型的训练效率，并将预先计算的分数嵌入到图像中以加快训练速度和减少图像数来学习准确分数，我们在数值实验中展示了我们提出方法相对于标准基于分数的扩散模型的改进性能，其意义上地以更快速度实现了类似的质量。

基于分数的扩散模型中使用评分嵌入进行高效去噪