AI Models & Technology

Diffusion Model

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Definition

A diffusion model is a class of generative AI model that learns to create data—typically images, audio, or video—by learning to reverse a gradual noising process. During training, the model observes how clean data is progressively corrupted by adding random noise across many steps until only noise remains, then learns to reverse this process: starting from pure noise, it iteratively denoises the signal, step by step, until a coherent, realistic sample emerges. Prominent examples include Stable Diffusion, DALL-E, and Midjourney for images, and newer models extending this approach to video and 3D content.

In commerce, diffusion models are transforming creative and merchandising workflows. Product image generation allows brands to create lifestyle photography, variant imagery, and marketing visuals from text prompts at a fraction of traditional studio production costs—enabling rapid catalog expansion and A/B testing of visual presentations. Virtual try-on systems use diffusion models to composite product images onto customer photos or body models, reducing return rates by improving purchase confidence. Retailers and brands are also using these models for automated background removal and scene generation, banner and ad creative generation at scale, and exploratory design work. The key commercial consideration is quality control and brand consistency: outputs must be reviewed and potentially fine-tuned on brand-specific image sets to meet the visual standards required for customer-facing applications.

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Deterministic ModelDiscriminative ModelHybrid Recommendation ModelLarge Language Model (LLM)
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Source

AI Best Practices for Commerce - Glossary
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Last updated: May 12, 2026