Challenge: Recent advances in Large Language Models (LLMs) have demonstrated their potential across a wide spectrum of natural language processing tasks.
Approach: They propose a novel approach to narrow the generalization gap in TSTL scenarios by refining the interpolation of RoPE features for OOD positions.
Outcome: The proposed approach improves performance without additional online computational costs on train-short-test-long scenarios.

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Understanding the RoPE Extensions of Long-Context LLMs: An Attention Perspective (2025.coling-main)

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Challenge: Enabling LLMs to handle lengthy context is currently a research hotspot . a notable challenge limiting further customization is the inability of LLM to utilize context beyond pretrained length due to the inherent flaw of rotary position embedding (RoPE).
Approach: They propose to extend the RoPE from an attention perspective and on two benchmarking tasks.
Outcome: The proposed extension of the RoPE improves extrapolation and retrieval errors.
PEPE: Long-context Extension for Large Language Models via Periodic Extrapolation Positional Encodings (2025.findings-emnlp)

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Challenge: Long-context extension attempts to extend contextual window in pre-trained LLMs . primary method involves expanding initial positional encodings, disrupting positional learning .
Approach: They propose a new extension strategy based on Rotary Position Embedding to extend contextual window in pre-trained large language models.
Outcome: The proposed method can extend the contextual window in pre-trained large language models . expansion disrupts positional encodings learned during pre-training, authors show .
PSC: Extending Context Window of Large Language Models via Phase Shift Calibration (2024.emnlp-main)

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Challenge: Large-scale language models (LLMs) have shown impressive results across a variety of tasks.
Approach: They propose a module for calibrating the frequencies predefined by existing methods . they conducted extensive experiments across multiple models and tasks .
Outcome: The proposed method reduces perplexity as the context window size is varied from 16k to 32k and up to 64k.
Extending Audio Context for Long-Form Understanding in Large Audio-Language Models (2026.eacl-long)

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Challenge: Prior work has introduced context-extension methods (e.g. YaRN) on unimodal LLMs, yet their application to LALMs remains unexplored.
Approach: They propose a training-free, modality-decoupled extension method that modifies only audio token positions, leaving text positions intact to preserve the base LLM’s text capabilities.
Outcome: The proposed method outperforms the original models across wide range of settings and provides significant performance improvement on long audio of unseen lengths.
LaMPE: Length-aware Multi-grained Positional Encoding for Adaptive Long-context Scaling Without Training (2026.findings-acl)

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Challenge: Large language models (LLMs) experience significant performance degradation when the input exceeds the pretraining context window due to the out-of-distribution (OOD) behavior of Rotary Position Embedding (RoPE).
Approach: They propose a training-free method that remaps out-of-distribution (OOD) positions into the in-distance range with fixed mapping strategies, ignoring the dynamic relationship between input length and effective context window.
Outcome: Experiments on three representative LLMs across five mainstream long-context benchmarks show that the proposed method achieves significant performance improvements compared to existing methods.
Extending Context Window of Large Language Models from a Distributional Perspective (2024.emnlp-main)

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Challenge: Existing scaling methods for extending context window rely on empirical approaches and lack understanding of the internal distribution within RoPE resulting in suboptimal performance.
Approach: They propose to optimize the context window extending task from the view of rotary angle distribution by minimizing disturbance between rotary angles to maintain consistency with the pre-training phase.
Outcome: The proposed approach reduces by up to 72% of the distributional disturbance when extending LLaMA2’s context window to 8k, and reduces it by up 32% when extending to 16k.
E2-LLM: Efficient and Extreme Length Extension of Large Language Models (2024.findings-acl)

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Challenge: Existing techniques for extending context capabilities in LLMs require additional training procedures and access to datasets with long context (e.g., sequences of 32K tokens).
Approach: They propose a solution to extend context capabilities in Large Language Models by training a single process over a sequence of 4K tokens.
Outcome: The proposed solution significantly reduces the cost of continual-pretraining or fine-tuning over short sequences and improves robustness to diverse relative positions.
Towards Inducing Long-Context Abilities in Multilingual Neural Machine Translation Models (2025.naacl-long)

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Challenge: Neural Machine Translation models traditionally use Sinusoidal Positional Embeddings . retraining with newer methods like ROPE or ALIBI is computationally expensive .
Approach: They propose to transition NMT models from Sinusoidal to Relative PEs without compromising performance.
Outcome: The proposed approach outperforms models trained with Sinusoidal PEs on document-level benchmarks . the results show that parameter-efficient fine-tuning can facilitate the transition .
Effective Long-Context Scaling of Foundation Models (2024.naacl-long)

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Challenge: Large language models (LLMs) are rapidly deployed and continue to evolve through scaling.
Approach: They propose a method to train strong long-context LLMs that are capable of utilizing massive context windows of up to 32,000 tokens.
Outcome: The proposed model can surpass gpt-3.5-turbo-16k's overall performance on long-context benchmarks with a cost-effective instruction tuning procedure that is free of expensive annotations.
Breaking the Stage Barrier: A Novel Single-Stage Approach to Long Context Extension for Large Language Models (2025.coling-main)

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Challenge: Recent studies show that Large language models struggle with handling long token sequences due to limited training context size.
Approach: They propose a single-stage continual pretraining method to equip LLMs with long context modeling capabilities.
Outcome: The proposed method outperforms existing methods on 4 language modeling benchmarks.

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