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Xue Liu

47 accepted papers

2026

A Blockchain Framework for Equitable and Secure Task Allocation in Robot Swarms

ICRA 2026poster

Recent studies demonstrate the potential of blockchain to enable robots in a swarm to achieve secure consensus about the environment, particularly when robots are homogeneous and perform identical tasks. Typically, robots receive rewards for their contributions to consensus achievement, but no studi…

Cited by 0SourceScholar
2026

Distributionally Robust Set Representation Learning Under Inference-Time Element Corruption

ICML 2026poster

Standard Set Representation Learning methods typically excel on curated data but often overlook the challenge of Inference-time Element Corruption. This refers to scenarios where deployed models encounter element-level degradations, such as outliers or missing components, that may distort the set re…

Cited by 0SourceScholar
2026

Escaping Policy Contraction: Contraction-Aware PPO (CaPPO) for Stable Language Model Fine-Tuning

ICLR 2026poster

Reinforcement learning from human feedback (RLHF) with proximal policy optimization (PPO) is widely used but often yields less diverse outputs than supervised fine-tuning, suggesting an effect in which the policy’s support contracts during on-policy optimization. We formalize this “policy contractio…

Cited by 0SourceScholar
2026

Fedfit: Federated dynamic pruning via Fisher Information scoring

ICML 2026poster

Cross-device Federated Learning (FL) is frequently bottlenecked by the prohibitive computational and communication costs of training deep neural networks on resource-constrained edge hardware. While federated dynamic pruning aims to alleviate these costs by adjusting sparse topologies during trainin…

Cited by 0SourceScholar
2026

Pedagogically-Inspired Data Synthesis for Language Model Knowledge Distillation

ICLR 2026poster

Knowledge distillation from Large Language Models (LLMs) to smaller models has emerged as a critical technique for deploying efficient AI systems. However, current methods for distillation via synthetic data lack pedagogical awareness, treating knowledge transfer as a one-off data synthesis and trai…

Cited by 0SourceScholar
2026

Prima.cpp: Fast 30-70B LLM Inference on Heterogeneous and Low-Resource Home Clusters

ICLR 2026poster

On-device inference offers privacy, offline use, and instant response, but consumer hardware restricts large language models (LLMs) to low throughput and capability. To overcome this challenge, we present prima.cpp, a distributed on-device inference system that runs 30-70B LLMs on consumer home clus…

Cited by 0SourcecodeScholar
2026

RAEE: A Robust Retrieval-Augmented Early Exit Framework for Efficient Inference

ICLR 2026poster

Deploying large language model inference remains challenging due to their high computational overhead. Early exit optimizes model inference by adaptively reducing the number of inference layers. Current methods typically train internal classifiers or use heuristic methods to determine the exit layer…

Cited by 0SourceScholar
2026

RECODE: A Benchmark for Research Code DEvelopment with Interactive Human Feedback

ICLR 2026poster

Large language models (LLMs) show the promise in supporting scientific research implementation, yet their ability to generate correct and executable code remains limited. Existing works largely adopt one-shot settings, ignoring the iterative and feedback-driven nature of realistic workflows of scien…

Cited by 0SourcecodeScholar
2026

Search-R2: Enhancing Search-Integrated Reasoning via Actor-Refiner Collaboration

ICML 2026poster

Search-integrated reasoning enables language agents to transcend static parametric knowledge by actively querying external sources. However, training these agents via reinforcement learning is hindered by the *multi-scale credit assignment* problem: existing methods typically rely on sparse, traject…

Cited by 0SourceScholar
2026

Set Representation Auxiliary Learning with Adversarial Encoding Perturbation and Optimization

ICLR 2026poster

Sets are a fundamental data structure, and learning their vectorized representations is crucial for many computational problems. Existing methods typically focus on intra-set properties such as permutation invariance and cardinality independence. While effective at preserving basic intra-set semanti…

Cited by 0SourceScholar
2026

Spatial CAPTCHA: Generatively Benchmarking Spatial Reasoning for Human-Machine Differentiation

ICLR 2026poster

Online services rely on CAPTCHAs as a first line of defense against automated abuse, yet recent advances in multi-modal large language models (MLLMs) have eroded the effectiveness of conventional designs that focus on text recognition or 2D image understanding. To address this challenge, we present…

Cited by 0SourcecodeScholar
2026

Support-Proximity Augmented Diffusion Estimation for Offline Black-Box Optimization

ICML 2026poster

Offline black-box optimization aims to discover novel designs with high property scores using only a static dataset, a task fundamentally challenged by the out-of-distribution (OOD) extrapolation problem. Existing approaches typically bifurcate into inverse methods, which struggle with the ill-posed…

Cited by 0SourceScholar
2026

Tequila: Deadzone-free Ternary Quantization for Large Language Models

ICLR 2026poster

Quantization techniques are essential for the deployment of Large Language Models (LLMs) on edge devices. However, prevailing methods often rely on mixed-precision multiplication that lacks efficient hardware support, making it not feasible. Ternary weight quantization addresses this by constraining…

Cited by 0SourcecodeScholar
2026

Training Diffusion Language Models for Black-Box Optimization

ICML 2026spotlight

We study offline black-box optimization (BBO), aiming to discover improved designs from an offline dataset of designs and labels, a problem common in robotics, DNA, and materials science with limited labeled samples. While recent work applies autoregressive LLMs to BBO by formatting tasks as natural…

Cited by 0SourceScholar
2025

3DMolFormer: A Dual-channel Framework for Structure-based Drug Discovery

ICLR 2025poster

Structure-based drug discovery, encompassing the tasks of protein-ligand docking and pocket-aware 3D drug design, represents a core challenge in drug discovery. However, no existing work can deal with both tasks to effectively leverage the duality between them, and current methods for each task are…

2025

Embracing Trustworthy Brain-Agent Collaboration as Paradigm Extension for Intelligent Assistive Technologies

NeurIPS 2025poster

Brain-Computer Interfaces (BCIs) offer a direct communication pathway between the human brain and external devices, holding significant promise for individuals with severe neurological impairments. However, their widespread adoption is hindered by critical limitations, such as low information transf…

Cited by 0SourceScholar
2025

Exploring Multimodal Foundation AI and Expert-in-the-Loop for Sustainable Management of Wild Salmon Fisheries in Indigenous Rivers

IJCAI 2025

Wild salmon are essential to the ecological, economic, and cultural sustainability of the North Pacific Rim. Yet climate variability, habitat loss, and data limitations in remote ecosystems that lack basic infrastructure support pose significant challenges to effective fisheries management. This pro

Cited by 0SourcePDFScholar
2025

Generative AI for Immersive Video: Recent Advances and Future Opportunities

IJCAI 2025

Immersive video serves as a key component of eXtended Reality (XR) that aims to create and interact with simulated virtual or hybrid environments. Such a technology allows users to experience immersive sensations that transcend time and space, and meanwhile continuously providing training data for e

Cited by 0SourcePDFScholar
2025

How to Train Your LLM Web Agent: A Statistical Diagnosis

NeurIPS 2025poster

Large language model (LLM) agents for web interfaces have advanced rapidly, yet open-source systems still lag behind proprietary agents. Bridging this gap is key to enabling customizable, efficient, and privacy-preserving agents. Two challenges hinder progress: the reproducibility issues in RL and L…

Cited by 0SourceScholar
2025

Transtreaming: Adaptive Delay-aware Transformer for Real-time Streaming Perception

AAAI 2025technical

Real-time object detection is critical for the decision-making process for many real-world applications, such as collision avoidance and path planning in autonomous driving. This work presents an innovative real-time streaming perception method, Transtreaming, which addresses the challenge of real-t…

2025

Warmup Generations: A Task-Agnostic Approach for Guiding Sequence-to-Sequence Learning with Unsupervised Initial State Generation

ACL 2025long

Traditional supervised fine-tuning (SFT) strategies for sequence-to-sequence tasks often train models to directly generate the target output. Recent work has shown that guiding models with intermediate steps—such as keywords, outlines, or reasoning chains—can significantly improve performance, coher…

Cited by 0SourcePDFScholar
2024

Density-based User Representation using Gaussian Process Regression for Multi-interest Personalized Retrieval

NeurIPS 2024poster

Accurate modeling of the diverse and dynamic interests of users remains a significant challenge in the design of personalized recommender systems. Existing user modeling methods, like single-point and multi-point representations, have limitations w.r.t.\ accuracy, diversity, and adaptability. To ove…

Cited by 0SourcePDFScholar
2024

Learning to Extract Structured Entities Using Language Models

EMNLP 2024main

Recent advances in machine learning have significantly impacted the field of information extraction, with Language Models (LMs) playing a pivotal role in extracting structured information from unstructured text. Prior works typically represent information extraction as triplet-centric and use classi…

2024

Less or More From Teacher: Exploiting Trilateral Geometry For Knowledge Distillation

ICLR 2024poster

Knowledge distillation aims to train a compact student network using soft supervision from a larger teacher network and hard supervision from ground truths. However, determining an optimal knowledge fusion ratio that balances these supervisory signals remains challenging. Prior methods generally res…

Cited by 3SourcePDFScholar
2024

ReFusion: Improving Natural Language Understanding with Computation-Efficient Retrieval Representation Fusion

ICLR 2024poster

Retrieval-based augmentations (RA) incorporating knowledge from an external database into language models have greatly succeeded in various knowledge-intensive (KI) tasks. However, integrating retrievals in non-knowledge-intensive (NKI) tasks is still challenging. Existing works focus on concatenati…

2024

The Pitfalls and Promise of Conformal Inference Under Adversarial Attacks

ICML 2024poster

In safety-critical applications such as medical imaging and autonomous driving, where decisions have profound implications for patient health and road safety, it is imperative to maintain both high adversarial robustness to protect against potential adversarial attacks and reliable uncertainty quant…

2024

Think Before You Act: Decision Transformers with Working Memory

ICML 2024poster

Decision Transformer-based decision-making agents have shown the ability to generalize across multiple tasks. However, their performance relies on massive data and computation. We argue that this inefficiency stems from the forgetting phenomenon, in which a model memorizes its behaviors in parameter…

2023

A Generic Framework for Byzantine-Tolerant Consensus Achievement in Robot Swarms

IROS 2023poster

Recent studies show that some security features that blockchains grant to decentralized networks on the internet can be ported to swarm robotics. Although the integration of blockchain technology and swarm robotics shows great promise, thus far, research has been limited to proof-of-concept scenario…

Cited by 15SourceScholar
2023

ANSEL Photobot: A Robot Event Photographer with Semantic Intelligence

ICRA 2023poster

Our work examines the way in which large language models can be used for robotic planning and sampling in the context of automated photographic documentation. Specifically, we illustrate how to produce a photo-taking robot with an exceptional level of semantic awareness by leveraging recent advances…

Cited by 9SourceScholar
2023

Bayes-MIL: A New Probabilistic Perspective on Attention-based Multiple Instance Learning for Whole Slide Images

ICLR 2023poster

Multiple instance learning (MIL) is a popular weakly-supervised learning model on the whole slide image (WSI) for AI-assisted pathology diagnosis. The recent advance in attention-based MIL allows the model to find its region-of-interest (ROI) for interpretation by learning the attention weights for…

Cited by 20SourcePDFScholar
2023

Bidirectional Learning for Offline Model-based Biological Sequence Design

ICML 2023poster

Offline model-based optimization aims to maximize a black-box objective function with a static dataset of designs and their scores. In this paper, we focus on biological sequence design to maximize some sequence score. A recent approach employs bidirectional learning, combining a forward mapping for…

2023

Importance-aware Co-teaching for Offline Model-based Optimization

NeurIPS 2023poster

Offline model-based optimization aims to find a design that maximizes a property of interest using only an offline dataset, with applications in robot, protein, and molecule design, among others. A prevalent approach is gradient ascent, where a proxy model is trained on the offline dataset and then…

2023

Parallel-mentoring for Offline Model-based Optimization

NeurIPS 2023poster

We study offline model-based optimization to maximize a black-box objective function with a static dataset of designs and scores. These designs encompass a variety of domains, including materials, robots, DNA sequences, and proteins. A common approach trains a proxy on the static dataset and perform…

2023

Retrieval-Augmented Multiple Instance Learning

NeurIPS 2023poster

Multiple Instance Learning (MIL) is a crucial weakly supervised learning method applied across various domains, e.g., medical diagnosis based on whole slide images (WSIs). Recent advancements in MIL algorithms have yielded exceptional performance when the training and test data originate from the sa…

2023

Towards Hybrid-grained Feature Interaction Selection for Deep Sparse Network

NeurIPS 2023poster

Deep sparse networks are widely investigated as a neural network architecture for prediction tasks with high-dimensional sparse features, with which feature interaction selection is a critical component. While previous methods primarily focus on how to search feature interaction in a coarse-grained…

2023

Zero-Shot Fault Detection for Manipulators Through Bayesian Inverse Reinforcement Learning

IROS 2023poster

We consider the detection of faults in robotic manipulators, with particular emphasis on faults that have not been observed or identified in advance, which naturally includes those that occur very infrequently. Recent studies indicate that the reward function obtained through Inverse Reinforcement L…

Cited by 1SourceScholar
2022

Behaviour Learning with Adaptive Motif Discovery and Interacting Multiple Model

IROS 2022poster

We propose an approach that enables simultaneous interpretable learning of a high-level discrete behaviour and its low-level rhythmic sub-behaviour. We do this though a unified reward function, where a reward function that only describes low-level behaviour, with less impact on learning of other beh…

Cited by 1SourceScholar
2022

Bidirectional Learning for Offline Infinite-width Model-based Optimization

NeurIPS 2022accept

In offline model-based optimization, we strive to maximize a black-box objective function by only leveraging a static dataset of designs and their scores. This problem setting arises in numerous fields including the design of materials, robots, DNAs, proteins, etc. Recent approaches train a deep neu…

2022

Learning Multi-Objective Curricula for Robotic Policy Learning

CoRL 2022poster

Various automatic curriculum learning (ACL) methods have been proposed to improve the sample efficiency and final performance of robots' policies learning. They are designed to control how a robotic agent collects data, which is inspired by how humans gradually adapt their learning processes to thei…

Cited by 4SourcecodeScholar
2021

Generalized DataWeighting via Class-Level Gradient Manipulation

NeurIPS 2021poster

Label noise and class imbalance are two major issues coexisting in real-world datasets. To alleviate the two issues, state-of-the-art methods reweight each instance by leveraging a small amount of clean and unbiased data. Yet, these methods overlook class-level information within each instance, whic…

2021

Knowledge-Enhanced Top-K Recommendation in Poincaré Ball

AAAI 2021technical

Personalized recommender systems are increasingly important as more content and services become available and users struggle to identify what might interest them. Thanks to the ability for providing rich information, knowledge graphs (KGs) are being incorporated to enhance the recommendation perform…

Cited by 42SourcePDFScholar
2021

Optimizing Cellular Networks via Continuously Moving Base Stations on Road Networks

ICRA 2021poster

Although existing cellular network base stations are typically immobile, the recent development of small form factor base stations and self driving cars has enabled the possibility of deploying a team of continuously moving base stations that can reorganize the network infrastructure to adapt to cha…

Cited by 1SourceScholar
2020

PresSense: Passive Respiration Sensing via Ambient WiFi Signals in Noisy Environments

IROS 2020poster

Passive sensing with ambient WiFi signals is a promising technique that will enable new types of human-robot interactions while preserving users' privacy. Here, we present PresSense, a system for human respiration sensing in noisy environments. Unlike existing WiFi-based respiration sensors, we empl…

Cited by 10SourceScholar