I haven't heard the term before either, but it's mentioned at least by Google too so not entirely unheard of in the multimodal training context. Even so I also

I haven't heard the term before either, but it's mentioned at least by Google too so not entirely unheard of in the multimodal training context. Even so I also think this could have been conveyed without using that term. Two towers and even twin towers as seen in some places sounds exceedingly marketingy. But as others have pointed out, this may have been a popular term in recommendation systems before the rise of deep learning multimodality. https://blog.research.google/2022/06/limoe-learning-multiple-modalities-with.html https://blog.research.google/2022/06/limoe-learning-multiple...