Paper Shows Perfect Reconstruction Cannot Guarantee VAE Codebook Consistency

A new paper by Yusuke Hayashi proves that perfect reconstruction in a VAE cannot determine whether two codebooks on its latent space are consistent, showing reconstruction quality alone is insufficient to verify encoder-decoder codebook agreement.

2026-10-20 ~ 2026-10-21 · 2 related posts

• New proof: perfect reconstruction can't guarantee VAE latent codes read back as written — Hidenori8Tanaka · 2026-10-20
• New Proof: Perfect VAE Reconstruction Can't Verify Encoder-Decoder Codebook Agreement — burny_tech · 2026-10-21