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Peiyi Wang

34 accepted papers

2025

Instantly Learning Preference Alignment via In-context DPO

NAACL 2025long

Human Preference Alignment (HPA) can assist large language models (LLMs) to generate safe content. Due to the heavy cost of fine-tuning, tuning-free methods have emerged, typically modifying LLM decoding via post-processing. In this paper, we propose a novel and effective approach for HPA in a tunin…

2025

LLM Critics Help Catch Bugs in Mathematics: Towards a Better Mathematical Verifier with Natural Language Feedback

ACL 2025finding

In recent progress, mathematical verifiers have achieved success in mathematical reasoning tasks by validating the correctness of solutions generated by policy models. However, existing verifiers are trained with binary classification labels, which are not informative enough for the model to accurat…

2025

Origami-Inspired Soft Gripper with Tunable Constant Force Output

IROS 2025

Soft robotic grippers gently and safely manipulate delicate objects due to their inherent adaptability and softness. Limited by insufficient stiffness and imprecise force control, conventional soft grippers are not suitable for applications that require stable grasping force. In this work, we propos

Cited by 1SourceScholar
2025

Towards Harmonized Uncertainty Estimation for Large Language Models

ACL 2025long

To facilitate robust and trustworthy deployment of large language models (LLMs), it is essential to quantify the reliability of their generations through uncertainty estimation. While recent efforts have made significant advancements by leveraging the internal logic and linguistic features of LLMs t…

Cited by 0SourcePDFScholar
2025

VL-RewardBench: A Challenging Benchmark for Vision-Language Generative Reward Models

CVPR 2025highlight

Vision-language generative reward models (VL-GenRMs) play a crucial role in aligning and evaluating multimodal AI systems, yet their own evaluation remains under-explored. Current assessment methods primarily rely on AI-annotated preference labels from traditional VL tasks, which can introduce biase…

2024

AssistGUI: Task-Oriented PC Graphical User Interface Automation

CVPR 2024poster

Graphical User Interface (GUI) automation holds significant promise for assisting users with complex tasks thereby boosting human productivity. Existing works leveraging Large Language Model (LLM) or LLM-based AI agents have shown capabilities in automating tasks on Android and Web platforms. Howeve…

Cited by 7SourcePDFScholar
2024

Be a Multitude to Itself: A Prompt Evolution Framework for Red Teaming

EMNLP 2024finding

Large Language Models (LLMs) have gained increasing attention for their remarkable capacity, alongside concerns about safety arising from their potential to produce harmful content. Red teaming aims to find prompts that could elicit harmful responses from LLMs, and is essential to discover and mitig…

Cited by 0SourcePDFScholar
2024

Large Language Models are not Fair Evaluators

ACL 2024long

In this paper, we uncover a positional bias in the evaluation paradigm of adopting large language models (LLMs), e.g., GPT-4, as a referee to score and compare the quality of responses generated by candidate models. We find that the quality ranking of candidate responses can be easily hacked by simp…

2024

Math-Shepherd: Verify and Reinforce LLMs Step-by-step without Human Annotations

ACL 2024long

In this paper, we present an innovative process-oriented math process reward model called Math-shepherd, which assigns a reward score to each step of math problem solutions. The training of Math-shepherd is achieved using automatically constructed process-wise supervision data, breaking the bottlene…

Cited by 242SourcePDFScholar
2024

Multimodal ArXiv: A Dataset for Improving Scientific Comprehension of Large Vision-Language Models

ACL 2024long

Large vision-language models (LVLMs) excel across diverse tasks involving concrete images from natural scenes. However, their ability to interpret abstract figures, such as geometry shapes and scientific plots, remains limited due to a scarcity of training datasets in scientific domains.To fill this…

2024

PCA-Bench: Evaluating Multimodal Large Language Models in Perception-Cognition-Action Chain

ACL 2024findings

We present PCA-Bench, a multimodal decision-making benchmark for evaluating the integrated capabilities of Multimodal Large Language Models (MLLMs). Departing from previous benchmarks focusing on simplistic tasks and individual model capability, PCA-Bench introduces three complex scenarios: autonomo…

2024

Strain-based Modeling of Rod-driven Soft Continuum Robots with Co-located Embedded Sensors

IROS 2024poster

Rod-driven soft robots (RDSR) with a well-balanced performance in terms of perception, precision, and intelligence have a great potential for application. Mathematical description and predicted sensing of deformable soft bodies are crucial to achieve controllable and intelligent behaviors of these r…

Cited by 0SourceScholar
2024

Unlocking Efficiency in Large Language Model Inference: A Comprehensive Survey of Speculative Decoding

ACL 2024findings

To mitigate the high inference latency stemming from autoregressive decoding in Large Language Models (LLMs), Speculative Decoding has emerged as a novel decoding paradigm for LLM inference. In each decoding step, this method first drafts several future tokens efficiently and then verifies them in p…

2024

Utilizing Local Hierarchy with Adversarial Training for Hierarchical Text Classification

COLING 2024main

Hierarchical text classification (HTC) is a challenging subtask of multi-label classification due to its complex taxonomic structure. Nearly all recent HTC works focus on how the labels are structured but ignore the sub-structure of ground-truth labels according to each input text which contains fru…

2024

VLFeedback: A Large-Scale AI Feedback Dataset for Large Vision-Language Models Alignment

EMNLP 2024main

As large vision-language models (LVLMs) evolve rapidly, the demand for high-quality and diverse data to align these models becomes increasingly crucial. However, the creation of such data with human supervision proves costly and time-intensive. In this paper, we investigate the efficacy of AI feedba…

2023

Electrical Impedance Tomographic Shape Sensing for Soft Robots

RA-L 2023

With infinite degrees of freedom, soft robots are expected to achieve dexterous and complex tasks, but this also puts forward higher requirements for their sensing capabilities. An important sensing task in soft robots is sensing their own deformation and current shape. Currently, most of the existi

Cited by 22SourceScholar
2023

Enhancing Continual Relation Extraction via Classifier Decomposition

ACL 2023findings

Continual relation extraction (CRE) models aim at handling emerging new relations while avoiding catastrophically forgetting old ones in the streaming data. Though improvements have been shown by previous CRE studies, most of them only adopt a vanilla strategy when models first learn representations…

2023

InfoCL: Alleviating Catastrophic Forgetting in Continual Text Classification from An Information Theoretic Perspective

EMNLP 2023long findings

Continual learning (CL) aims to constantly learn new knowledge over time while avoiding catastrophic forgetting on old tasks. We focus on continual text classification under the class-incremental setting. Recent CL studies have identified the severe performance decrease on analogous classes as a key…

Cited by 0SourcecodeScholar
2023

Meta-Learning-Based Optimal Control for Soft Robotic Manipulators to Interact with Unknown Environments

ICRA 2023poster

Safe and efficient robot-environment interaction is a critical but challenging problem as robots are being increasingly employed to operate in unstructured and unpredictable environments. Soft robots are inherently compliant to safely interact with environments but their high nonlinearity exacerbate…

Cited by 12SourceScholar
2023

Not All Demonstration Examples are Equally Beneficial: Reweighting Demonstration Examples for In-Context Learning

EMNLP 2023long findings

Large Language Models (LLMs) have recently gained the In-Context Learning (ICL) ability with the models scaling up, allowing them to quickly adapt to downstream tasks with only a few demonstration examples prepended in the input sequence. Nonetheless, the current practice of ICL treats all demonstr…

Cited by 0SourcecodeScholar
2023

Rationale-Enhanced Language Models are Better Continual Relation Learners

EMNLP 2023short main

Continual relation extraction (CRE) aims to solve the problem of catastrophic forgetting when learning a sequence of newly emerging relations. Recent CRE studies have found that catastrophic forgetting arises from the model's lack of robustness against future analogous relations. To address the issu…

Cited by 0SourcecodeScholar
2023

Soft Robotic Arm With Extensible Stiffening Layer

RA-L 2023

When talking about soft robots, softness is considered the most important feature, which brings dexterity and safety in interactive tasks with humans and environments. Such softness sometimes limits the real application of soft robots because load capability and rigidity are widely needed on many oc

Cited by 17SourceScholar
2023

Speculative Decoding: Exploiting Speculative Execution for Accelerating Seq2seq Generation

EMNLP 2023long findings

We propose Speculative Decoding (SpecDec), for the first time ever, to formally study exploiting the idea of speculative execution to accelerate autoregressive (AR) decoding. Speculative Decoding has two innovations: Spec-Drafter -- an independent model specially optimized for efficient and accurate…

Cited by 0SourcecodeScholar
2022

A Two-Stream AMR-enhanced Model for Document-level Event Argument Extraction

NAACL 2022long

Most previous studies aim at extracting events from a single sentence, while document-level event extraction still remains under-explored. In this paper, we focus on extracting event arguments from an entire document, which mainly faces two critical problems: a) the long-distance dependency between…

2022

ATP: AMRize Then Parse! Enhancing AMR Parsing with PseudoAMRs

NAACL 2022findings

As Abstract Meaning Representation (AMR) implicitly involves compound semantic annotations, we hypothesize auxiliary tasks which are semantically or formally related can better enhance AMR parsing. We find that 1) Semantic role labeling (SRL) and dependency parsing (DP), would bring more performance…

2022

An Enhanced Span-based Decomposition Method for Few-Shot Sequence Labeling

NAACL 2022long

Few-Shot Sequence Labeling (FSSL) is a canonical paradigm for the tagging models, e.g., named entity recognition and slot filling, to generalize on an emerging, resource-scarce domain. Recently, the metric-based meta-learning framework has been recognized as a promising approach for FSSL. However, m…

2022

Design and Analysis of a Novel Variable Stiffness Continuum Robot With Built-in Winding-Styled Ropes

RA-L 2022

Continuum robots driven by rods have a wide range of applications, such as detection and maintenance tasks in unstructured environments. However, their inherent nature of flexibility also limits their function. Thus, variable stiffness mechanisms for continuum robots have consistently attracted the

Cited by 34SourceScholar
2022

Design and Experimental Characterization of a Push-Pull Flexible Rod-Driven Soft-Bodied Robot

RA-L 2022

Soft robots with a well-balanced performance in terms of dexterity, accuracy, and payload have a great potential for application. Balancing safe human-robot interaction with operation performance enables the use of soft robot in biomedical fields, among others, such as surgery, rehabilitation and el

Cited by 30SourceScholar
2022

HPT: Hierarchy-aware Prompt Tuning for Hierarchical Text Classification

EMNLP 2022main

Hierarchical text classification (HTC) is a challenging subtask of multi-label classification due to its complex label hierarchy.Recently, the pretrained language models (PLM)have been widely adopted in HTC through a fine-tuning paradigm. However, in this paradigm, there exists a huge gap between th…

2022

Hierarchical Curriculum Learning for AMR Parsing

ACL 2022short

Abstract Meaning Representation (AMR) parsing aims to translate sentences to semantic representation with a hierarchical structure, and is recently empowered by pretrained sequence-to-sequence models. However, there exists a gap between their flat training objective (i.e., equally treats all output…

2022

Incorporating Hierarchy into Text Encoder: a Contrastive Learning Approach for Hierarchical Text Classification

ACL 2022long

Hierarchical text classification is a challenging subtask of multi-label classification due to its complex label hierarchy. Existing methods encode text and label hierarchy separately and mix their representations for classification, where the hierarchy remains unchanged for all input text. Instead…

2022

Learning Robust Representations for Continual Relation Extraction via Adversarial Class Augmentation

EMNLP 2022main

Continual relation extraction (CRE) aims to continually learn new relations from a class-incremental data stream. CRE model usually suffers from catastrophic forgetting problem, i.e., the performance of old relations seriously degrades when the model learns new relations. Most previous work attribut…

2022

Learning-Based Approach for a Soft Assistive Robotic Arm to Achieve Simultaneous Position and Force Control

RA-L 2022

Soft robotics have demonstrated great advantages in assisting elderly/disabled people during daily tasks, owing to their highly dexterous motions and safe human-robot interactions. However, simultaneously controlling the position and force of soft robots is still a challenging task due to soft actua

Cited by 21SourceScholar