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arXiv 2603.06403cs.LG
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适配器增强的带状机用于在线多约束多模态推断调度

Adapter-Augmented Bandits for Online Multi-Constrained Multi-Modal Inference Scheduling

School of Computer Science and Engineering, Sun Yat-sen University, Guangzhou, 510006, China.(中山大学计算机科学与工程学院);School of Computing, Macquarie University, NSW 2109, Australia(麦考瑞大学计算机学院)

Xianzhi Zhang, Yue Xu, Yinlin Zhu, Di Wu, Yipeng Zhou, Miao Hu, Guocong Quan

AI总结:

M-CMAB通过多适配器增强框架,实现多模态任务调度中的多约束优化,提升推断效率和预算利用效率。

摘要:

多模态大语言模型(MLLM)推断调度能够在实际和异构预算下实现高质量的响应质量,这超出了同质单一后端设置所能提供的范围。然而,在线MLLM任务调度是非平凡的,因为请求在模态组成和潜在推理难度上变化剧烈,而执行后端由于系统抖动和网络变化会带来不同的、随时间变化的成本。这些耦合的不确定性提出了两个核心挑战:推导出语义忠实但调度相关的多模态任务表示,以及在不可逆的多维预算上做出低开销的在线决策。因此,我们提出了M-CMAB(多模态、多约束、上下文多臂带状机),一种多适配器增强的MLLM推断调度框架,包含三个组件:(i)一个CLS-注意力、冻结后端的预测器,用于提取紧凑的任务表示,并仅更新轻量级适配器以进行特定动作的估计;(ii)一个对偶- primal的约束器,通过每轮目标维护在线拉格朗日乘数以通过长期约束;(iii)一个两阶段的调度器,平衡探索和利用以在不可逆预算下进行平衡。我们建立了在多维背包约束下的后悔保证。在一个具有异构后端的复合多模态基准上,M-CMAB在所有预算范围内均优于最先进的基线,实现了高达14.18%的奖励提升,并接近一个由Oracle辅助的上界。代码可在https://anonymous.4open.science/r/M2CMAB/上获得。

英文摘要:

Multi-modal large language model (MLLM) inference scheduling enables strong response quality under practical and heterogeneous budgets, beyond what a homogeneous single-backend setting can offer. Yet online MLLM task scheduling is nontrivial, as requests vary sharply in modality composition and latent reasoning difficulty, while execution backends incur distinct, time-varying costs due to system jitter and network variation. These coupled uncertainties pose two core challenges: deriving semantically faithful yet scheduling-relevant multi-modal task representations, and making low-overhead online decisions over irreversible multi-dimensional budgets. Accordingly, we propose \emph{M-CMAB} (\underline{M}ulti-modal \underline{M}ulti-constraint \underline{C}ontextual \underline{M}ulti-\underline{A}rmed \underline{B}andit), a multi-adapter-enhanced MLLM inference scheduling framework with three components: (i) a CLS-attentive, frozen-backbone \emph{Predictor} that extracts compact task representations and updates only lightweight adapters for action-specific estimation; (ii) a primal-dual \emph{Constrainer} that maintains online Lagrange multipliers to enforce long-horizon constraints via per-round objectives; and (iii) a two-phase \emph{Scheduler} that balances exploration and exploitation under irreversible budgets. We establish a regret guarantee under multi-dimensional knapsack constraints. On a composite multimodal benchmark with heterogeneous backends, \emph{M-CMAB} consistently outperforms state-of-the-art baselines across budget regimes, achieving up to 14.18% higher reward and closely tracking an oracle-aided upper bound. Codes are available at https://anonymous.4open.science/r/M2CMAB/.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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