MoE-LLaVA: Mixture of Experts for Large Vision-Language Models
Authors: name: Bin Lin, name: Zhenyu Tang, name: Yang Ye, name: Jiaxi Cui, name: Bin Zhu, name: Peng Jin, name: Junwu Zhang, name: Munan Ning, name: Li Yuan

For Large Vision-Language Models (LVLMs), scaling the model can effectively
improve performance. However, expanding model parameters significantly
increases the training and inferring costs, as all model parameters are
activated for each token in the calculation. In this work, we propose a novel
training strategy MoE-tuning for LVLMs, which can constructing a sparse model
with an outrageous number of parameter but a constant computational cost, and
effectively addresses the performance degradation typically associated with
multi-modal learning and model sparsity. Furthermore, we present the MoE-LLaVA
framework, a MoE-based sparse LVLM architecture. This framework uniquely
activates only the top-k experts through routers during deployment, keeping the
remaining experts inactive. Our extensive experiments highlight the excellent
capabilities of MoE-LLaVA in visual understanding and its potential to reduce
hallucinations in model outputs. Remarkably, with just 3 billion sparsely
activated parameters, MoE-LLaVA demonstrates performance comparable to the
LLaVA-1.5-7B on various visual understanding datasets and even surpasses the
LLaVA-1.5-13B in object hallucination benchmarks. Through MoE-LLaVA, we aim to
establish a baseline for sparse LVLMs and provide valuable insights for future
research in developing more efficient and effective multi-modal learning
systems. Code is released at https://github.com/PKU-YuanGroup/MoE-LLaVA.