Electronic Thesis/Dissertation
 

Generative AI for Fashion and Body Shape Embeddings

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GenFab

Online fashion return rates range from 30% to 40%, with poor garment fit driving the majority of returns. Existing recommendation systems rely on garment size as a proxy for fit and rarely account for variation in body shape.This praxis introduces GenFab, a garment–body compatibility prediction framework derived from the ViBE architecture. The proposed approach replaces ViBE’s text-mined binary attribute vector with a 384-dimensional GPT-4o semantic embedding, while preserving the original four-branch multilayer perceptron structure. Two configurations were evaluated

GenFab-I, using a 14-dimensional SMPL body representation, and GenFab-II, using a compact 4-dimensional anthropometric representation (height, bust, waist, hips). Architecture, training protocol, and evaluation procedures were held constant to isolate the impact of semantic attribute enrichment. Results show that GenFab-II improved ranking AUC by 16.4% and prediction accuracy by 13.1% for tops in the person-unseen evaluation scenario (p ≈ 0, Bonferroni-corrected α = 0.00417). Additional improvements were observed in the both-unseen scenario, with gains of 6.6% in AUC and 1.5% in accuracy. All three hypotheses were supported. These findings indicate that vision–language semantic garment representations can substantially improve garment–body compatibility prediction, providing a practical mechanism for reducing fit-related dissatisfaction and potentially lowering return rates in fashion e-commerce.

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