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Zhi Zheng

36 accepted papers

2026

Diffusion-Based mmWave Radar Point Cloud Enhancement Driven by Range Images

RA-L 2026

Millimeter-wave (mmWave) radar has attracted significant attention in robotics and autonomous driving due to its robustness in harsh environments. However, the radar point clouds are typically sparse and noisy, which limits its futher development. Traditional mmWave radar enhancement approaches ofte

Cited by 6SourceScholar
2026

More Edits, More Stable: Understanding the Lifelong Normalization in Sequential Model Editing

ICML 2026poster

Lifelong Model Editing aims to continuously update evolving facts in Large Language Models while preserving unrelated knowledge and general capabilities, yet it remains plagued by catastrophic forgetting and model collapse. Empirically, we find that the few recent editors resilient over long horizon…

Cited by 0SourceScholar
2026

SkySplat: Generalizable 3D Gaussian Splatting from Multi-Temporal Sparse Satellite Images

AAAI 2026technical

Three-dimensional scene reconstruction from sparse-view satellite images is a long-standing and challenging task. While 3D Gaussian Splatting (3DGS) and its variants have recently attracted attention for its high efficiency, existing methods remain unsuitable for satellite images due to incompatibil

Cited by 0SourcePDFScholar
2025

AMoPO: Adaptive Multi-objective Preference Optimization without Reward Models and Reference Models

ACL 2025finding

Existing multi-objective preference alignment methods for large language models (LLMs) face limitations: (1) the inability to effectively balance various preference dimensions, and (2) reliance on auxiliary reward/reference models introduces computational complexity. To address these challenges, we…

2025

CaDA: Cross-Problem Routing Solver with Constraint-Aware Dual-Attention

ICML 2025poster

Vehicle routing problems (VRPs) are significant combinatorial optimization problems (COPs) holding substantial practical importance. Recently, neural combinatorial optimization (NCO), which involves training deep learning models on extensive data to learn vehicle routing heuristics, has emerged as a…

2025

CapsuleBot: A Novel Hybrid Aerial-Ground Bi-Copter Robot With Two Actuated-Wheel-Rotors

RA-L 2025

This paper presents the design, modeling, and experimental validation of CapsuleBot, a novel hybrid aerial-ground bi-copter robot designed for long-endurance and low-noise operations. CapsuleBot combines the maneuverability of a bi-copter in the air with the low power consumption and low noise of a

Cited by 10SourceScholar
2025

Combined Modal Robust Cascade Control for Wheeled Self-Reconfigurable Robots Under Drive Failure and Safety Threat

ICRA 2025

Wheeled self-reconfigurable robots (WSRRs), a new type of multi-robot system with flexible configurations and task adaptability, have an extensive application prospects in unstructured mission environments. In this paper, based on the nonholonomic constraints and Lagrange method, the combinatorial m

Cited by 0SourceScholar
2025

Don’t Trade Off Safety: Diffusion Regularization for Constrained Offline RL

NeurIPS 2025poster

Constrained reinforcement learning (RL) seeks high-performance policies under safety constraints. We focus on an offline setting where the agent learns from a fixed dataset—a common requirement in realistic tasks to prevent unsafe exploration. To address this, we propose Diffusion-Regularized Constr…

Cited by 1SourcecodeScholar
2025

Enhancing Long-Tail Bundle Recommendations Utilizing Composition Pattern Modeling

IJCAI 2025

Bundle recommendation aims to provide users with a one-stop service by offering a collection of related items. However, these systems face a significant challenge, where a small portion of bundles accumulate most interactions while the long-tail bundles receive few interactions.This imbalance leads

Cited by 0SourcePDFScholar
2025

Following Occam’s Razor: Dynamic Combination of Structured Knowledge for Multi-Hop Question Answering using LLMs

EMNLP 2025

Multi-hop question answering is a challenging task that requires capturing information from different positions in multiple documents. Recently, several methods propose to enhance Large Language Models (LLMs) by incorporating structured knowledge, aiming to grasp key information for solving this tas

2025

Harnessing Large Language Models for Knowledge Graph Question Answering via Adaptive Multi-Aspect Retrieval-Augmentation

AAAI 2025technical

Large Language Models (LLMs) demonstrate remarkable capabilities, yet struggle with hallucination and outdated knowledge when tasked with complex knowledge reasoning, resulting in factually incorrect outputs. Previous studies have attempted to mitigate it by retrieving factual knowledge from large-s…

2025

Harnessing Multimodal Large Language Models for Multimodal Sequential Recommendation

AAAI 2025technical

Recent advances in Large Language Models (LLMs) have demonstrated significant potential in the field of Recommendation Systems (RSs). Most existing studies have focused on converting user behavior logs into textual prompts and leveraging techniques such as prompt tuning to enable LLMs for recommend…

2025

Language-Guided Object-Centric Diffusion Policy for Generalizable and Collision-Aware Manipulation

ICRA 2025

Learning from demonstrations faces challenges in generalizing beyond the training data and often lacks collision awareness. This paper introduces Lan-o3dp, a language-guided object-centric diffusion policy framework that can adapt to unseen situations such as cluttered scenes, shifting camera views,

Cited by 8SourceScholar
2025

MLLM-I2W: Harnessing Multimodal Large Language Model for Zero-Shot Composed Image Retrieval

COLING 2025main

Combined Image Retrieval (CIR) involves retrieving an image based on a reference image and a brief text description, which is widely present in various scenarios such as fashion recommendation. Existing methods can be mainly divided into two categories, respectively supervised CIR methods and Zero-S…

Cited by 0SourcePDFScholar
2025

Monte Carlo Tree Search for Comprehensive Exploration in LLM-Based Automatic Heuristic Design

ICML 2025poster

Handcrafting heuristics for solving complex optimization tasks (e.g., route planning and task allocation) is a common practice but requires extensive domain knowledge. Recently, Large Language Model (LLM)-based automatic heuristic design (AHD) methods have shown promise in generating high-quality he…

2025

Multi-Branch Self-Drafting for LLM Inference Acceleration

AAAI 2025technical

The autoregressive decoding paradigm endows large language models (LLMs) with superior language generation capabilities; however, its step-by-step decoding process inherently limits decoding speed. To mitigate these constraints, the prevalent “draft and validation” strategy enables parallel validati…

2025

Rethinking Neural Combinatorial Optimization for Vehicle Routing Problems with Different Constraint Tightness Degrees

NeurIPS 2025poster

Recent neural combinatorial optimization (NCO) methods have shown promising problem-solving ability without requiring domain-specific expertise. Most existing NCO methods use training and testing data with a fixed constraint value and lack research on the effect of constraint tightness on the perfor…

Cited by 0SourcecodeScholar
2025

SGN: Shifted Window-Based Hierarchical Variable Grouping for Multivariate Time Series Classification

NeurIPS 2025poster

Multivariate time series (MTS) classification has attracted increasing attention across various domains. Existing methods either decompose MTS into separate univariate series, ignoring inter-variable dependencies, or jointly model all variables, which may lead to over-smoothing and loss of semantic…

Cited by 0SourceScholar
2025

Tailless Flapping-Wing Robot With Bio-Inspired Elastic Passive Legs for Multi-Modal Locomotion

RA-L 2025

Flapping-wing robots offer significant versatility; however, achieving efficient multi-modal locomotion remains challenging. This paper presents the design, modeling, and experimentation of a novel tailless flapping-wing robot with three independently actuated pairs of wings. Inspired by the leg mor

Cited by 4SourceScholar
2025

Think and Recall: Layer-Level Prompting for Lifelong Model Editing

EMNLP 2025

Lifelong model editing aims to dynamically adjust a model’s output with respect to specific facts, knowledge points, or behaviors, enabling the model to adapt to the ever-changing demands of the real world without requiring retraining. While some retrieval-based methods have demonstrated potential i

2024

A Cross-View Hierarchical Graph Learning Hypernetwork for Skill Demand-Supply Joint Prediction

AAAI 2024technical

The rapidly changing landscape of technology and industries leads to dynamic skill requirements, making it crucial for employees and employers to anticipate such shifts to maintain a competitive edge in the labor market. Existing efforts in this area either relies on domain-expert knowledge or regar…

2024

DPN: Decoupling Partition and Navigation for Neural Solvers of Min-max Vehicle Routing Problems

ICML 2024poster

The min-max vehicle routing problem (min-max VRP) traverses all given customers by assigning several routes and aims to minimize the length of the longest route. Recently, reinforcement learning (RL)-based sequential planning methods have exhibited advantages in solving efficiency and optimality. Ho…

2024

Double-Checker: Large Language Model as a Checker for Few-shot Named Entity Recognition

EMNLP 2024finding

Recently, few-shot Named Entity Recognition (NER) has attracted significant attention due to the high cost of obtaining high-quality labeled data. Decomposition-based methods have demonstrated remarkable performance on this task, which initially train a type-independent span detector and subsequentl…

2024

Exploring Large Language Model for Graph Data Understanding in Online Job Recommendations

AAAI 2024technical

Large Language Models (LLMs) have revolutionized natural language processing tasks, demonstrating their exceptional capabilities in various domains. However, their potential for graph semantic mining in job recommendations remains largely unexplored. This paper focuses on unveiling the capability of…

2024

Granular Entity Mapper: Advancing Fine-grained Multimodal Named Entity Recognition and Grounding

EMNLP 2024finding

Multimodal Named Entity Recognition and Grounding (MNERG) aims to extract paired textual and visual entities from texts and images. It has been well explored through a two-step paradigm: initially identifying potential visual entities using object detection methods and then aligning the extracted te…

Cited by 0SourcePDFScholar
2024

Intention-Aware Planner for Robust and Safe Aerial Tracking

IROS 2024poster

Autonomous target tracking with quadrotors has wide applications in many scenarios, such as cinematographic follow-up shooting or suspect chasing. Target motion prediction is necessary when designing the tracking planner. However, the widely used constant velocity or constant rotation assumption can…

Cited by 1SourceScholar
2024

Learning Encodings for Constructive Neural Combinatorial Optimization Needs to Regret

AAAI 2024technical

Deep-reinforcement-learning (DRL) based neural combinatorial optimization (NCO) methods have demonstrated efficiency without relying on the guidance of optimal solutions. As the most mainstream among them, the learning constructive heuristic (LCH) achieves high-quality solutions through a rapid auto…

2024

MBRVO: A Blur Robust Visual Odometry Based on Motion Blurred Artifact Prior

RA-L 2024

How to estimate camera pose from motion-blurred images remains a challenge for visual odometry. The blurring artifacts are inevitably caused by the exposure during camera motion. While current visual odometry regards them as noise, we argue that it is necessary to extract potential information from

Cited by 3SourceScholar
2024

Segmented Safety Docking Control for Mobile Self-Reconfigurable Robots

IROS 2024poster

Mobile self-reconfigurable robots (MSRRs), as a novel multi-robot system with flexible configurations and task adaptability, hold promising applications in unstructured task environments. However, existing autonomous docking strategies are primarily applied in laboratory settings and face numerous c…

Cited by 0SourceScholar
2024

Tracking Control with Uncertainty Smoothing Estimation under Aggressive Maneuvers of Aerial Vehicles

IROS 2024poster

Aggressive maneuvering is crucial for aerial vehicles to execute adversarial and penetration missions. However, this challenges the accurate tracking control of drones due to uncertainties induced by high-speed flight. Therefore, firstly, a highly dynamic tracking control framework is proposed to ac…

Cited by 0SourceScholar
2024

UDC: A Unified Neural Divide-and-Conquer Framework for Large-Scale Combinatorial Optimization Problems

NeurIPS 2024poster

Single-stage neural combinatorial optimization solvers have achieved near-optimal results on various small-scale combinatorial optimization (CO) problems without requiring expert knowledge. However, these solvers exhibit significant performance degradation when applied to large-scale CO problems. Re…

2023

Deep Temporal Sets with Evidential Reinforced Attentions for Unique Behavioral Pattern Discovery

ICML 2023poster

Machine learning-driven human behavior analysis is gaining attention in behavioral/mental healthcare, due to its potential to identify behavioral patterns that cannot be recognized by traditional assessments. Real-life applications, such as digital behavioral biomarker identification, often require…

Cited by 8SourcePDFScholar
2023

Roller-Quadrotor: A Novel Hybrid Terrestrial/Aerial Quadrotor with Unicycle-Driven and Rotor-Assisted Turning

IROS 2023poster

The Roller-Quadrotor is a novel quadrotor that combines the maneuverability of aerial drones with the endurance of ground vehicles. This work focuses on the design, modeling, and experimental validation of the Roller-Quadrotor. Flight capabilities are achieved through a quadrotor config-uration, wit…

Cited by 5SourceScholar
2023

Sparse Maximum Margin Learning from Multimodal Human Behavioral Patterns

AAAI 2023technical

We propose a multimodal data fusion framework to systematically analyze human behavioral data from specialized domains that are inherently dynamic, sparse, and heterogeneous. We develop a two-tier architecture of probabilistic mixtures, where the lower tier leverages parametric distributions from th…