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Classifier-free guidance (CFG) has become an essential component of modern conditional diffusion models. Although highly effective in practice, the underlying mechanisms by which CFG enhances quality, detail, and prompt alignment are not…

Machine Learning · Computer Science 2025-06-25 Seyedmorteza Sadat , Tobias Vontobel , Farnood Salehi , Romann M. Weber

While classifier-free guidance (CFG) is essential for conditional diffusion models, it doubles the number of neural function evaluations (NFEs) per inference step. To mitigate this inefficiency, we introduce adapter guidance distillation…

Machine Learning · Computer Science 2025-03-11 Cristian Perez Jensen , Seyedmorteza Sadat

Classifier-Free Guidance (CFG) has established the foundation for guidance mechanisms in diffusion models, showing that well-designed guidance proxies significantly improve conditional generation and sample quality. Autoguidance (AG) has…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Inho Kong , Sojin Lee , Youngjoon Hong , Hyunwoo J. Kim

Classifier-Free Guidance (CFG) significantly enhances controllability in generative models by interpolating conditional and unconditional predictions. However, standard CFG often employs a static unconditional input, which can be suboptimal…

Computation and Language · Computer Science 2025-05-27 Pengxiang Li , Shilin Yan , Joey Tsai , Renrui Zhang , Ruichuan An , Ziyu Guo , Xiaowei Gao

Diffusion models have emerged as a powerful tool for generating high-quality images, videos, and 3D content. While sampling guidance techniques like CFG improve quality, they reduce diversity and motion. Autoguidance mitigates these issues…

Computer Vision and Pattern Recognition · Computer Science 2024-12-02 Junha Hyung , Kinam Kim , Susung Hong , Min-Jung Kim , Jaegul Choo

The generation of high-quality, diverse, and prompt-aligned images is a central goal in image-generating diffusion models. The popular classifier-free guidance (CFG) approach improves quality and alignment at the cost of reduced variation,…

Machine Learning · Computer Science 2025-10-21 Enhao Gu , Haolin Hou

Classifier-free guidance (CFG) succeeds in condition diffusion models that use a guidance scale to balance the influence of conditional and unconditional terms. A high guidance scale is used to enhance the performance of the conditional…

Computer Vision and Pattern Recognition · Computer Science 2025-06-27 Kaiyu Song , Hanjiang Lai

Text-to-image diffusion models are capable of generating high-quality images, but suboptimal pre-trained text representations often result in these images failing to align closely with the given text prompts. Classifier-free guidance (CFG)…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Zhenyu Zhou , Defang Chen , Can Wang , Chun Chen , Siwei Lyu

Guided or controlled data generation with diffusion models\blfootnote{Partial preliminary results of this work appeared in International Conference on Machine Learning 2025 \citep{li2025provable}.} has become a cornerstone of modern…

Machine Learning · Statistics 2025-12-05 Yuchen Jiao , Yuxin Chen , Gen Li

Classifier-Free Guidance (CFG) enhances the quality and condition adherence of text-to-image diffusion models. It operates by combining the conditional and unconditional predictions using a fixed weight. However, recent works vary the…

Computer Vision and Pattern Recognition · Computer Science 2025-01-23 Xi Wang , Nicolas Dufour , Nefeli Andreou , Marie-Paule Cani , Victoria Fernandez Abrevaya , David Picard , Vicky Kalogeiton

Personalizing text-to-image diffusion models is crucial for adapting the pre-trained models to specific target concepts, enabling diverse image generation. However, fine-tuning with few images introduces an inherent trade-off between…

Computer Vision and Pattern Recognition · Computer Science 2025-08-04 Sunghyun Park , Seokeon Choi , Hyoungwoo Park , Sungrack Yun

Classifier-guided diffusion models have emerged as a powerful approach for conditional image generation, but they suffer from overconfident predictions during early denoising steps, causing the guidance gradient to vanish. This paper…

Computer Vision and Pattern Recognition · Computer Science 2025-12-23 Seyed Alireza Javid , Amirhossein Bagheri , Nuria González-Prelcic

High-resolution image synthesis with diffusion models often suffers from energy instabilities and guidance artifacts that degrade visual quality. We analyze the latent energy landscape during sampling and propose adaptive classifier-free…

Graphics · Computer Science 2025-12-12 Ankit Sanjyal

Classifier-Free Guidance (CFG) improves sample quality in diffusion models, but its dual-pass inference and reliance on null-condition training limit its use in few-step regimes. Attention-space guidance has emerged as a complementary…

Machine Learning · Computer Science 2026-05-19 Kwanyoung Kim

Guidance in conditional diffusion generation is of great importance for sample quality and controllability. However, existing guidance schemes are to be desired. On one hand, mainstream methods such as classifier guidance and…

Machine Learning · Computer Science 2023-10-18 Jiajun Ma , Tianyang Hu , Wenjia Wang , Jiacheng Sun

Iterative refinement methods based on a denoising-inversion cycle are powerful tools for enhancing the quality and control of diffusion models. However, their effectiveness is critically limited when combined with standard Classifier-Free…

Computer Vision and Pattern Recognition · Computer Science 2025-12-30 Haosen Li , Wenshuo Chen , Shaofeng Liang , Lei Wang , Haozhe Jia , Yutao Yue

Flow-based generative models have become a strong framework for high-quality generative modeling, yet pretrained models are rarely used in their vanilla conditional form: conditional samples without guidance often appear diffuse and lack…

Machine Learning · Computer Science 2026-02-25 Runlong Liao , Jian Yu , Baiyu Su , Chi Zhang , Lizhang Chen , Qiang Liu

The design of diffusion-based audio generation systems has been investigated from diverse perspectives, such as data space, network architecture, and conditioning techniques, while most of these innovations require model re-training. In…

Sound · Computer Science 2026-04-10 Junyou Wang , Zehua Chen , Binjie Yuan , Kaiwen Zheng , Chang Li , Yuxuan Jiang , Jun Zhu

Autoregressive (AR) models have emerged as powerful tools for image generation by modeling images as sequences of discrete tokens. While Classifier-Free Guidance (CFG) has been adopted to improve conditional generation, its application in…

Computer Vision and Pattern Recognition · Computer Science 2025-10-03 Dongli Xu , Aleksei Tiulpin , Matthew B. Blaschko

This research focuses on the development and enhancement of text-to-image denoising diffusion models, addressing key challenges such as limited sample diversity and training instability. By incorporating Classifier-Free Guidance (CFG) and…

Computer Vision and Pattern Recognition · Computer Science 2025-03-10 Rajdeep Roshan Sahu