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Ziwei He

14 accepted papers

2026

AWM: Accurate Weight-Matrix Fingerprint for Large Language Models

ICLR 2026poster

Protecting the intellectual property of large language models (LLMs) is crucial, given the substantial resources required for their training. Consequently, there is an urgent need for both model owners and third parties to determine whether a suspect LLM is trained from scratch or derived from an ex…

Cited by 0SourcecodeScholar
2026

Beyond Real: Imaginary Extension of Rotary Position Embeddings for Long-Context LLMs

ICLR 2026poster

Rotary Position Embeddings (RoPE) have become a standard for encoding sequence order in Large Language Models (LLMs) by applying rotations to query and key vectors in the complex plane. Standard implementations, however, utilize only the real component of the complex-valued dot product for attention…

Cited by 0SourcecodeScholar
2026

Faster Than Flash: Exploiting Attention Sparsity for Efficient Long-Context Decoding

ICML 2026poster

The development of long-context Large Language Models (LLMs) is constrained by the memory bandwidth bottleneck and quadratic complexity of the attention mechanism during decoding. To overcome the inherent trade-offs between the memory overhead of metadata-based metrics and the computational ineffici…

Cited by 0SourceScholar
2026

FreqKV: Key-Value Compression in Frequency Domain for Context Window Extension

ICLR 2026poster

Existing key-value (KV) cache compression methods for large language models (LLMs) often rely on token eviction, which risks losing critical local information in both long prefilling and decoding scenarios. When extrapolating beyond the pretrained context length, their performance degrades sharply o…

Cited by 0SourcecodeScholar
2026

LongLLaDA: Unlocking Long Context Capabilities in Diffusion LLMs

AAAI 2026technical

Large Language Diffusion Models, or dLLMs, have emerged as a significant focus in NLP research, with substantial effort directed toward understanding their scalability and downstream task performance. However, their long-context capabilities remain unexplored, lacking systematic analysis or methods

Cited by 0SourcePDFScholar
2026

PonderLM-2: Pretraining LLM with Latent Thoughts in Continuous Space

ICML 2026spotlight

The remarkable success of Chain-of-Thought (CoT), which enhances performance by scaling generation steps at test-time, inspires us to ask: can we leverage a similar scaling of computational steps during pretraining to improve the generation of each individual token? To address this, we propose a nov…

Cited by 0SourceScholar
2026

PonderLM: Pretraining Language Models to Ponder in Continuous Space

ICLR 2026poster

Humans ponder before articulating complex sentence elements, enabling deeper cognitive processing through focused effort. In this work, we introduce this pondering process into language models by repeatedly invoking the forward process within a single token generation step. During pondering, instead…

Cited by 0SourcecodeScholar
2026

Sparse-dLLM: Accelerating Diffusion LLMs with Dynamic Cache Eviction

AAAI 2026technical

Diffusion Large Language Models (dLLMs) enable breakthroughs in reasoning and parallel decoding but suffer from prohibitive quadratic computational complexity and memory overhead during inference. Current caching techniques accelerate decoding by storing full-layer states, yet impose substantial mem

Cited by 0SourcePDFScholar
2025

WeightedKV: Attention Scores Weighted Key-Value Cache Merging for Large Language Models

ICASSP 2025accepted

Large Language Models (LLMs) use key-value (KV) cache to reduce redundant computation in autoregressive generation. However, the KV cache size increases linearly during generation, leading to excessive memory usage, especially for long texts. Most KV cache compression methods evict the unimportant K…

Cited by 0SourceScholar
2024

Fovea Transformer: Efficient Long-Context Modeling with Structured Fine-To-Coarse Attention

ICASSP 2024accepted

The quadratic complexity of self-attention in Transformers has hindered the processing of long text. To alleviate this problem, previous works have proposed to sparsify the attention matrix, taking advantage of the observation that crucial information about a token can be derived from its neighbors.…

Cited by 0SourceScholar
2024

Towards Controlled Table-to-Text Generation with Scientific Reasoning

ICASSP 2024accepted

The sheer volume of scientific experimental results and complex technical statements, often presented in tabular formats, presents a formidable barrier to individuals acquiring preferred information. The realms of scientific reasoning and content generation that adhere to user preferences encounter…

Cited by 0SourceScholar
2023

Fourier Transformer: Fast Long Range Modeling by Removing Sequence Redundancy with FFT Operator

ACL 2023findings

The transformer model is known to be computationally demanding, and prohibitively costly for long sequences, as the self-attention module uses a quadratic time and space complexity with respect to sequence length. Many researchers have focused on designing new forms of self-attention or introducing…

2022

RASAT: Integrating Relational Structures into Pretrained Seq2Seq Model for Text-to-SQL

EMNLP 2022main

Relational structures such as schema linking and schema encoding have been validated as a key component to qualitatively translating natural language into SQL queries. However, introducing these structural relations comes with prices: they often result in a specialized model structure, which largely…