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Pingzhi Li

15 accepted papers

2026

$\texttt{FlashSchNet}$: Fast and Accurate Coarse-Grained Neural Network Molecular Dynamics

ICML 2026poster

Graph neural network (GNN) potentials such as SchNet improve the accuracy and transferability of molecular dynamics (MD) simulation by learning many-body interactions, but remain slower than classical force fields due to fragmented kernels and memory-bound pipelines that underutilize GPUs. We show t…

Cited by 0SourceScholar
2026

Adaptive Thinking: Large Language Models Know When to Think in Latent Space

ICLR 2026poster

Recent advances in large language models (LLMs) test-time computing have introduced the capability to perform intermediate chain-of-thought (CoT) reasoning (thinking) before generating answers. While increasing the thinking budget yields smooth performance improvements at inference time, the relatio…

Cited by 0SourceScholar
2026

AsyncSpade: Efficient Test-Time Scaling with Asynchronous Sparse Decoding

ICML 2026poster

Test-time scaling (TTS) can boost LLM reasoning through long chain-of-thought (CoT), but the linear KV-cache growth amplifies the memory-bound bottleneck of LLM decoding. Query-aware sparse decoding methods can achieve state-of-the-art performance under constrained FLOP budget, but are mainly constr…

Cited by 0SourceScholar
2026

Graph-of-Agents: A Graph-based Framework for Multi-Agent LLM Collaboration

ICLR 2026poster

With an ever-growing zoo of LLMs and benchmarks, the need to orchestrate multiple models for improved task performance has never been more pressing. While frameworks like Mixture-of-Agents (MoA) attempt to coordinate LLMs, they often fall short in terms of (1) selecting relevant agents, (2) facilita…

Cited by 0SourceScholar
2025

Bag of Tricks for Sparse Mixture-of-Experts: A Benchmark Across Reasoning, Efficiency, and Safety

EMNLP 2025

Mixture-of-Experts (MoE) has emerged as a promising approach for scaling large language models efficiently. However, how to design a desired MoE architecture given performance, efficiency, or safety goals remains absent. Existing benchmarks often focus on isolated aspects (e.g., reasoning, efficienc

Cited by 0SourcePDFScholar
2025

Glider: Global and Local Instruction-Driven Expert Router

EMNLP 2025

The development of performant pre-trained models has driven the advancement of routing-based expert models tailored to specific tasks. However, these methods often favor generalization over performance on held-in tasks. This limitation adversely impacts practical applicability, as real-world deploym

2025

Mozart: Modularized and Efficient MoE Training on 3.5D Wafer-Scale Chiplet Architectures

NeurIPS 2025spotlight

Mixture-of-Experts (MoE) architecture offers enhanced efficiency for Large Language Models (LLMs) with modularized computation, yet its inherent sparsity poses significant hardware deployment challenges, including memory locality issues, communication overhead, and inefficient computing resource uti…

Cited by 0SourceScholar
2025

ORAL: Prompting Your Large-Scale LoRAs via Conditional Recurrent Diffusion

EMNLP 2025

Parameter generation has emerged as a novel paradigm for neural network development, offering an alternative to traditional neural network training by synthesizing high-quality model weights directly. In the context of Low-Rank Adaptation (LoRA) for evolving ( i.e, constantly updated) large language

2025

Occult: Optimizing Collaborative Communications across Experts for Accelerated Parallel MoE Training and Inference

ICML 2025poster

Mixture-of-experts (MoE) architectures could achieve impressive computational efficiency with expert parallelism, which relies heavily on all-to-all communication across devices. Unfortunately, such communication overhead typically constitutes a significant portion of the total runtime, hampering th…

Cited by 0SourcePDFScholar
2025

PortLLM: Personalizing Evolving Large Language Models with Training-Free and Portable Model Patches

ICLR 2025poster

As large language models (LLMs) increasingly shape the AI landscape, fine-tuning pretrained models has become more popular than in the pre-LLM era for achieving optimal performance in domain-specific tasks. However, pretrained LLMs such as ChatGPT are periodically evolved (i.e., model parameters are…

Cited by 1SourcePDFScholar
2025

Unveiling Privacy Risks in Multi-modal Large Language Models: Task-specific Vulnerabilities and Mitigation Challenges

ACL 2025finding

Privacy risks in text-only Large Language Models (LLMs) are well studied, particularly their tendency to memorize and leak sensitive information. However, Multi-modal Large Language Models (MLLMs), which process both text and images, introduce unique privacy challenges that remain underexplored. Com…

2025

Vision Language Model Helps Private Information De-Identification in Vision Data

ACL 2025finding

Visual Language Models (VLMs) have gained significant popularity due to their remarkable ability. While various methods exist to enhance privacy in text-based applications, privacy risks associated with visual inputs remain largely overlooked such as Protected Health Information (PHI) in medical ima…

2024

$\texttt{Model-GLUE}$: Democratized LLM Scaling for A Large Model Zoo in the Wild

NeurIPS 2024poster

As Large Language Models (LLMs) excel across tasks and specialized domains, scaling LLMs based on existing models has gained significant attention, which is challenged by potential performance drop when combining disparate models. Various techniques have been proposed to aggregate pre-trained LLMs,…

2024

Merge, Then Compress: Demystify Efficient SMoE with Hints from Its Routing Policy

ICLR 2024spotlight

Sparsely activated Mixture-of-Experts (SMoE) has shown promise to scale up the learning capacity of neural networks, however, they have issues like: ($a$) $\textit{High Memory Usage,}$ due to duplication of the network layers into multiple copies as experts; and ($b$) $\textit{Redundancy in Experts,…

2024

Revisiting Zeroth-Order Optimization for Memory-Efficient LLM Fine-Tuning: A Benchmark

ICML 2024poster

In the evolving landscape of natural language processing (NLP), fine-tuning pre-trained Large Language Models (LLMs) with first-order (FO) optimizers like SGD and Adam has become standard. Yet, as LLMs grow in size, the substantial memory overhead from back-propagation (BP) for FO gradient computati…