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Ran Liu

20 accepted papers

2026

EMBridge: Enhancing Gesture Generalization from EMG Signals Through Cross-modal Representation Learning

ICLR 2026poster

Hand gesture classification using high-quality structured data such as videos, images, and hand skeletons is a well-explored problem in computer vision. Alternatively, leveraging low-power, cost-effective bio-signals, e.g. surface electromyography (sEMG), allows for continuous gesture prediction on…

Cited by 0SourceScholar
2025

Can Language Models Capture Human Writing Preferences for Domain-Specific Text Summarization?

ACL 2025finding

With the popularity of large language models and their high-quality text generation capabilities, researchers are using them as auxiliary tools for text summary writing. Although summaries generated by these large language models are smooth and capture key information sufficiently, the quality of th…

2025

Target Localization and Following Based on LiDAR and Ultra-Wideband Ranging with Consideration of Target Visibility

IROS 2025

To perform target-following tasks in unknown environments, a robot must identify the target’s position and plan an efficient path to reach it. Traditional LiDAR-based localization systems face challenges in distinguishing the target from objects with similar appearances. Meanwhile, existing target-f

Cited by 0SourceScholar
2025

TransPathNet: A Novel Two-Stage Framework for Indoor Radio Map Prediction

ICASSP 2025accepted

Accurate indoor pathloss prediction is crucial for optimizing wireless communication in indoor settings, where diverse materials and complex electromagnetic interactions pose significant modeling challenges. This paper introduces TransPathNet, a novel two-stage deep learning framework that leverages…

Cited by 0SourceScholar
2025

YOLO-TCT: An Effective Network For Long-Tailed Cervical Cell Detection

ICASSP 2025accepted

The Thinprep Cytologic Test (TCT) is a vital component in the early detection of cervical cancer. However, conventional manual screening methods are hindered by inefficiencies and high levels of subjectivity. This study presents YOLO-TCT, an enhanced YOLOv9 network designed for the automated detecti…

Cited by 0SourceScholar
2024

Balanced Data, Imbalanced Spectra: Unveiling Class Disparities with Spectral Imbalance

ICML 2024poster

Classification models are expected to perform equally well for different classes, yet in practice, there are often large gaps in their performance. This issue of class bias is widely studied in cases of datasets with sample imbalance, but is relatively overlooked in balanced datasets. In this work,…

Cited by 4SourcePDFScholar
2024

SumSurvey: An Abstractive Dataset of Scientific Survey Papers for Long Document Summarization

ACL 2024findings

With the popularity of large language models (LLMs) and their ability to handle longer input documents, there is a growing need for high-quality long document summarization datasets. Although many models already support 16k input, current lengths of summarization datasets are inadequate, and salient…

2024

Your contrastive learning problem is secretly a distribution alignment problem

NeurIPS 2024poster

Despite the success of contrastive learning (CL) in vision and language, its theoretical foundations and mechanisms for building representations remain poorly understood. In this work, we build connections between noise contrastive estimation losses widely used in CL and distribution alignment with…

2023

Half-Hop: A graph upsampling approach for slowing down message passing

ICML 2023poster

Message passing neural networks have shown a lot of success on graph-structured data. However, there are many instances where message passing can lead to over-smoothing or fail when neighboring nodes belong to different classes. In this work, we introduce a simple yet general framework for improving…

2023

UWB Radar SLAM: An Anchorless Approach in Vision Denied Indoor Environments

RA-L 2023

LiDAR and cameras are frequently used as sensors for simultaneous localization and mapping (SLAM). However, these sensors are prone to failure under low visibility (e.g. smoke) or places with reflective surfaces (e.g. mirrors). On the other hand, electromagnetic waves exhibit better penetration prop

Cited by 32SourceScholar
2022

Distributed Ranging SLAM for Multiple Robots with Ultra-WideBand and Odometry Measurements

IROS 2022poster

To accomplish task efficiently in a multiple robots system, a problem that has to be addressed is Simultaneous Localization and Mapping (SLAM). LiDAR (Light Detection and Ranging) has been used for many SLAM solutions due to its superb accuracy, but its performance degrades in featureless environmen…

Cited by 22SourceScholar
2022

MTNeuro: A Benchmark for Evaluating Representations of Brain Structure Across Multiple Levels of Abstraction

NeurIPS 2022accept

There are multiple scales of abstraction from which we can describe the same image, depending on whether we are focusing on fine-grained details or a more global attribute of the image. In brain mapping, learning to automatically parse images to build representations of both small-scale features (e.…

2022

Multi-AGV's Temporal Memory-Based RRT Exploration in Unknown Environment

RA-L 2022

With the increasing need for multi-robot for exploring the unknown region in a challenging environment, efficient collaborative exploration strategies are needed for achieving such feat. A frontier-based Rapidly-Exploring Random Tree (RRT) exploration can be deployed to explore an unknown environmen

Cited by 33SourceScholar
2022

Seeing the forest and the tree: Building representations of both individual and collective dynamics with transformers

NeurIPS 2022accept

Complex time-varying systems are often studied by abstracting away from the dynamics of individual components to build a model of the population-level dynamics from the start. However, when building a population-level description, it can be easy to lose sight of each individual and how they contribu…

2021

"Good Robot! Now Watch This!": Repurposing Reinforcement Learning for Task-to-Task Transfer

CoRL 2021poster

Modern Reinforcement Learning (RL) algorithms are not sample efficient to train on multi-step tasks in complex domains, impeding their wider deployment in the real world. We address this problem by leveraging the insight that RL models trained to complete one set of tasks can be repurposed to comple…

Cited by 13SourceScholar
2021

Drop, Swap, and Generate: A Self-Supervised Approach for Generating Neural Activity

NeurIPS 2021oral

Meaningful and simplified representations of neural activity can yield insights into how and what information is being processed within a neural circuit. However, without labels, finding representations that reveal the link between the brain and behavior can be challenging. Here, we introduce a nove…

Cited by 31SourcePDFScholar
2021

Relative Localization of Mobile Robots with Multiple Ultra-WideBand Ranging Measurements

IROS 2021poster

Relative localization between autonomous robots without infrastructure is crucial to achieve their navigation, path planning, and formation in many applications, such as emergency response, where acquiring a prior knowledge of the environment is not possible. The traditional Ultra-WideBand (UWB)-bas…

Cited by 42SourceScholar
2020

Robust Rank Constrained Sparse Learning: A Graph-Based Method for Clustering

ICASSP 2020accepted

Graph-based clustering is an advanced clustering techniuqe, which partitions the data according to an affinity graph. However, the graph quality affects the clustering results to a large extent, and it is difficult to construct a graph with high quality, especially for data with noises and outliers.…

Cited by 0SourceScholar
2017

Cooperative relative positioning of mobile users by fusing IMU inertial and UWB ranging information

ICRA 2017poster

Relative positioning between multiple mobile users is essential for many applications, such as search and rescue in disaster areas or human social interaction. Inertial-measurement unit (IMU) is promising to determine the change of position over short periods of time, but it is very sensitive to err…

Cited by 88SourceScholar