Abstract
Building Non-autoregressive (NAR) models in image captioning can fundamentally tackle the high inference latency of autoregressive models. However, existing NAR image captioning models are trained on maximum likelihood estimation, and suffer from their inherent multi-modality problem. Although constructing NAR models based on GANs can theoretically tackle this problem, existing GAN-based NAR models obtain poor performance when transferred to image captioning due to their incapacity of modeling complicated relations between images and text. To tackle this problem, we propose an Adversarial Non-autoregressive Transformer for Image Captioning (CaptionANT) by improving performance from two aspects: 1) modifying the model structure so as to be compatible with contrastive learning to effectively make use of unpaired samples; 2) integrating a reconstruction process to better utilize paired samples. By further combining with other effective techniques and our proposed lightweight structure, CaptionANT can better align input images and output text, and thus achieves new state-of-the-art performance for fully NAR models on the challenging MSCOCO dataset. More importantly, CaptionANT achieves a 26.72 times speedup compared to the autoregressive baseline with only 36.3% the number of parameters of the existing best fully NAR model for image captioning.- Anthology ID:
- 2024.lrec-main.1214
- Volume:
- Proceedings of the 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING 2024)
- Month:
- May
- Year:
- 2024
- Address:
- Torino, Italia
- Editors:
- Nicoletta Calzolari, Min-Yen Kan, Veronique Hoste, Alessandro Lenci, Sakriani Sakti, Nianwen Xue
- Venues:
- LREC | COLING
- SIG:
- Publisher:
- ELRA and ICCL
- Note:
- Pages:
- 13906–13918
- Language:
- URL:
- https://aclanthology.org/2024.lrec-main.1214
- DOI:
- Cite (ACL):
- Da Ren and Qing Li. 2024. Releasing the Capacity of GANs in Non-Autoregressive Image Captioning. In Proceedings of the 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING 2024), pages 13906–13918, Torino, Italia. ELRA and ICCL.
- Cite (Informal):
- Releasing the Capacity of GANs in Non-Autoregressive Image Captioning (Ren & Li, LREC-COLING 2024)
- PDF:
- https://preview.aclanthology.org/nschneid-patch-4/2024.lrec-main.1214.pdf