Challenge: Existing studies have shown the effectiveness of knowledge distillation in DPR, but there is a performance gap between the teacher and the distilled student.
Approach: They propose an iterative knowledge distillation method which transfers knowledge from teacher to student with help of multiple assistants in an iterated manner.
Outcome: The proposed method achieves state-of-the-art performance among models with same parameters on multiple datasets and is competitive when compared with larger models.

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Challenge: Large language models (LLMs) have demonstrated state-of-the-art (SOTA) performance across a wide spectrum of tasks.
Approach: They propose a framework that leverages three signal types to improve efficiency within resource-constrained, imperfect teacher scenarios.
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ReAugKD: Retrieval-Augmented Knowledge Distillation For Pre-trained Language Models (2023.acl-short)

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Challenge: Knowledge distillation (KD) is an effective compression technique to derive a smaller student model from a larger teacher model by transferring the knowledge embedded in the teacher's network.
Approach: They propose a framework and loss function that preserves the semantic similarities of teacher and student training examples to enable the student to retrieve from the knowledge base effectively.
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AD-KD: Attribution-Driven Knowledge Distillation for Language Model Compression (2023.acl-long)

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Challenge: Existing knowledge distillation methods focus on the transfer of model-specific knowledge but overlook data-specific information.
Approach: They propose an attribution-driven knowledge distillation approach which explores the token-level rationale behind the teacher model and transfers attribution knowledge to the student model.
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One-Teacher and Multiple-Student Knowledge Distillation on Sentiment Classification (2022.coling-1)

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Challenge: Existing knowledge distillation models require large computing resources and long inference time to perform.
Approach: They propose a one-teacher and multiple-student knowledge distillation approach to distill a deep pre-trained teacher model into multiple shallow student models with ensemble learning.
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Multi-Grained Knowledge Distillation for Named Entity Recognition (2021.naacl-main)

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Challenge: Pre-trained big models have delivered top performance in Seq2seq modeling, but their deployments in real-world applications are often hindered by excessive computations and memory demands.
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Beyond One-Step Distillation: Bridging the Capacity Gap in Small Language Models via Multi-Step Knowledge Transfer (2026.eacl-srw)

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Challenge: Large Language Models (LLMs) excel across diverse tasks but remain too large for efficient on-device deployment.
Approach: They revisit multi-step knowledge distillation as an effective remedy . they demonstrate that MSKD improves ROUGE-L and perplexity over single-step approaches .
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Dense Passage Retrieval: Is it Retrieving? (2024.findings-emnlp)

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Challenge: Large Language Models (LLMs) internally store repositories of knowledge, but access to these repositoriels is imprecise.
Approach: They propose a paradigm called retrieval augmented generation to address hallucinations . they analyze the role of fine-tuning pre-trained networks to enhance alignment .
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Improved Knowledge Distillation for Pre-trained Language Models via Knowledge Selection (2022.findings-emnlp)

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Challenge: Existing studies on knowledge distillation have shown that not all knowledge is necessary for learning a good student model.
Approach: They propose an actor-critic approach to selecting appropriate knowledge to transfer during the process of knowledge distillation.
Outcome: The proposed method outperforms several strong knowledge distillation baselines significantly on the GLUE datasets.
StepER: Step-wise Knowledge Distillation for Enhancing Reasoning Ability in Multi-Step Retrieval-Augmented Language Models (2025.emnlp-main)

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Challenge: Existing knowledge distillation methods overlook the need for different reasoning abilities at different steps, hindering transfer in multi-step retrieval-augmented frameworks.
Approach: They propose a method that uses step-wise supervision to align with evolving information and reasoning demands across stages.
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ADAM: Dense Retrieval Distillation with Adaptive Dark Examples (2024.findings-acl)

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Challenge: Existing methods to retrieve data from multiple encoders are too trivial for the teacher to distinguish, preventing the teacher from transferring abundant dark knowledge to the student.
Approach: They propose a knowledge distillation framework that can better transfer the dark knowledge held in the teacher with adaptive dark examples.
Outcome: The proposed framework can better transfer the dark knowledge held in the teacher with adaptive dark examples.

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