AdapterDrop: On the Efficiency of Adapters in Transformers
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Abstract (arXiv)
Massively pre-trained transformer models are computationally expensive to fine-tune, slow for inference, and have large storage requirements. Recent approaches tackle these shortcomings by training smaller models, dynamically reducing the model size, and by training light-weight adapters. In this paper, we propose AdapterDrop, removing adapters from lower transformer layers during training and inference, which incorporates concepts from all three directions. We show that AdapterDrop can dynamically reduce the computational overhead when performing inference over multiple tasks simultaneously, with minimal decrease in task performances. We further prune adapters from AdapterFusion, which improves the inference efficiency while maintaining the task performances entirely.
Key facts. Cited by 224 papers in the map (data through 14 Oct 2026). First posted on arXiv 22 Oct 2020.
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Citing papers per year: 2021: 10; 2022: 40; 2023: 53; 2024: 64; 2025: 40; 2026: 17.
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- 2021Large Language Models Can Be Strong Differentially Private Learnerscited by 412
- 2021Differentially Private Fine-tuning of Language Modelscited by 400
- 2023VeRA: Vector-based Random Matrix Adaptationcited by 300
- 2024PiSSA: Principal Singular Values and Singular Vectors Adaptation of Large Language Modelscited by 269
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- 2021On the Effectiveness of Adapter-based Tuning for Pretrained Language Model Adaptationcited by 147
- 2022Lifting the Curse of Multilinguality by Pre-training Modular Transformerscited by 146
- 2022On the Effectiveness of Parameter-Efficient Fine-Tuningcited by 141
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- 2026AQLoRA: A Zero-Search Recipe for Fast Quantized LoRA Fine-Tuning24 Aug 2026
- 2026Localized Adaptation Reveals Distinct Learning Signatures in Transformers28 Jul 2026
- 2026Turning Back Without Forgetting: Selective Backward Refinement for Parameter-Efficient Continual Learning31 May 2026
- 2026TLoRA: Task-aware Low Rank Adaptation of Large Language Models20 Apr 2026
- 2026IGU-LoRA: Adaptive Rank Allocation via Integrated Gradients and Uncertainty-Aware Scoring14 Mar 2026
- 2026ReMix: Reinforcement routing for mixtures of LoRAs in LLM finetuning10 Mar 2026
- 2026Astra: Activation-Space Tail-Eigenvector Low-Rank Adaptation of Large Language Models22 Feb 2026
- 2026LORA-CRAFT: Cross-layer Rank Adaptation via Frozen Tucker Decomposition of Pre-trained Attention Weights19 Feb 2026
- 2026SAILS: Segment Anything with Incrementally Learned Semantics for Task-Invariant and Training-Free Continual Learning16 Feb 2026
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