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Tianyu Chen

33 accepted papers

2026

EdiVal-Agent: An Object-Centric Framework for Automated, Fine-Grained Evaluation of Multi-Turn Editing

ICLR 2026poster

Instruction-based image editing has advanced rapidly, yet reliable and interpretable evaluation remains a bottleneck. Current protocols either (i) depend on paired reference images—resulting in limited coverage and inheriting biases from prior generative models—or (ii) rely *solely* on zero-shot vis…

Cited by 0SourcecodeScholar
2026

FRoD: Full-Rank Efficient Fine-Tuning with Rotational Degrees for Fast Convergence

AAAI 2026technical

Parameter-efficient fine-tuning (PEFT) methods have emerged as a practical solution for adapting large foundation models to downstream tasks, reducing computational and memory costs by updating only a small subset of parameters. Among them, approaches like LoRA aim to strike a balance between effici

Cited by 0SourcePDFScholar
2026

Fine-Tuned LLMs Know They Don’t Know: A Parameter-Efficient Approach to Recovering Honesty

AAAI 2026technical

The honesty of Large Language Models (LLMs) is increasingly important for safe deployment in high-stakes domains. However, this crucial trait is severely undermined by supervised fine-tuning (SFT), a common technique for model specialization. Existing recovery methods rely on data-intensive global p

Cited by 0SourcePDFScholar
2026

GIFSplat: Generative Prior-Guided Iterative Feed-Forward 3D Gaussian Splatting from Sparse Views

CVPR 2026

Feed-forward 3D reconstruction offers substantial runtime advantages over per-scene optimization, which remains slow at inference and often fragile under sparse views. However, existing feed-forward methods still have potential for further performance gains, especially for out-of-domain data, and st

Cited by 3SourcecodeScholar
2026

GeoNum: Bridging Numerical Continuity and Language Semantics via Geometric Embedding

AAAI 2026technical

Large language models excel at semantic reasoning yet struggle with numerical tasks because tokenization disrupts geometric continuity. Traditional methods fragment numerically close values into inconsistent token sequences, severing the correspondence between numerical proximity and representationa

Cited by 0SourcePDFScholar
2026

Pull Requests as a Training Signal for Repo-Level Code Editing

ICML 2026poster

Repository-level code editing requires models to understand complex dependencies and execute precise multi-file modifications across a large codebase. While recent gains on SWE-bench rely heavily on complex agent scaffolding, it remains unclear how much of this capability can be internalised via hig…

Cited by 0SourceScholar
2026

REAL: Regression-Aware Reinforcement Learning for LLM-as-a-Judge

ICML 2026poster

Large language models (LLMs) are increasingly deployed as automated evaluators that assign numeric scores to model outputs, a paradigm known as LLM-as-a-Judge. However, standard Reinforcement Learning (RL) methods typically rely on binary rewards (e.g., 0-1 accuracy), thereby ignoring the ordinal st…

Cited by 0SourceScholar
2026

Safeguarding Multimodal Knowledge Copyright in the RAG-as-a-Service Environment

ICLR 2026poster

As Retrieval-Augmented Generation (RAG) evolves into service-oriented platforms (Rag-as-a-Service) with shared knowledge bases, protecting the copyright of contributed data becomes essential. Existing watermarking methods in RAG focus solely on textual knowledge, leaving image knowledge unprotected.…

Cited by 0SourcecodeScholar
2026

Score Distillation Beyond Acceleration: Generative Modeling from Corrupted Data

ICLR 2026poster

Learning generative models directly from corrupted observations is a long-standing challenge across natural and scientific domains. We introduce *Distillation from Corrupted Data (DCD)*, a unified framework for learning high-fidelity, one-step generative models using **only** degraded data of the fo…

Cited by 0SourcecodeScholar
2026

The surprising strength of weak classifiers for validating neural posterior estimates

ICML 2026poster

The two-sample testing problem, a fundamental task in statistics and machine learning, seeks to determine whether two sets of samples, drawn from underlying distributions $p$ and $q$, are in fact identically distributed (i.e.~whether $p=q$). A popular and intuitive approach is the classifier two-sam…

Cited by 0SourceScholar
2026

Towards Long-window Anchoring in Vision-Language Model Distillation

AAAI 2026technical

While large vision-language models (VLMs) demonstrate impressive long-context understanding, their prevalent small branches fails on linguistics-photography alignment for limited window size. We discover that knowledge distillation improve students capability as compelementary to Rotary Position Emb

Cited by 0SourcePDFScholar
2026

Winformer: Transcending Pairwise Similarity for Time-series Generation

ICML 2026poster

The periodicity misalignment remains a challenge problem in generating time-series data across multiple domains. Existing methods model time-series interactions either at the granularity of individual points or fragmented segments. This limits their ability to capture and adapt to complex periodic p…

Cited by 0SourceScholar
2025

Automated Proof Generation for Rust Code via Self-Evolution

ICLR 2025poster

Ensuring correctness is crucial for code generation. Formal verification offers a definitive assurance of correctness, but demands substantial human effort in proof construction and hence raises a pressing need for automation. The primary obsta- cle lies in the severe lack of data—there is much fewe…

Cited by 4SourcePDFScholar
2025

CoLT: The conditional localization test for assessing the accuracy of neural posterior estimates

NeurIPS 2025spotlight

We consider the problem of validating whether a neural posterior estimate $q(\theta \mid x)$ is an accurate approximation to the true, unknown true posterior $p(\theta \mid x)$. Existing methods for evaluating the quality of an NPE estimate are largely derived from classifier-based tests or divergen…

Cited by 0SourceScholar
2025

FreqMoE: Dynamic Frequency Enhancement for Neural PDE Solvers

IJCAI 2025

Fourier Neural Operators (FNO) have emerged as promising solutions for efficiently solving partial differential equations (PDEs) by learning infinite-dimensional function mappings through frequency domain transformations. However, the sparsity of high-frequency signals limits computational efficienc

Cited by 0SourcePDFScholar
2025

Galaxy Walker: Geometry-aware VLMs For Galaxy-scale Understanding

CVPR 2025highlight

Modern vision-language models (VLMs) develop patch embedding and convolution backbone within vector space, especially Euclidean ones, at the very founding. When expanding VLMs to a galaxy-scale for understanding astronomical phenomena, the integration of spherical space for planetary orbits and hype…

Cited by 0SourcePDFScholar
2025

Improving Data Efficiency for LLM Reinforcement Fine-tuning Through Difficulty-targeted Online Data Selection and Rollout Replay

NeurIPS 2025poster

Reinforcement learning (RL) has become an effective approach for fine-tuning large language models (LLMs), particularly to enhance their reasoning capabilities. However, RL fine-tuning remains highly resource-intensive, and existing work has largely overlooked the problem of data efficiency. In this…

Cited by 0SourcecodeScholar
2025

OmniArch: Building Foundation Model for Scientific Computing

ICML 2025poster

Foundation models have revolutionized language modeling, while whether this success is replicated in scientific computing remains unexplored. We present OmniArch, the first prototype aiming at solving multi-scale and multi-physics scientific computing problems with physical alignment. We addressed a…

Cited by 0SourcePDFScholar
2025

PINNsAgent: Automated PDE Surrogation with Large Language Models

ICML 2025poster

Solving partial differential equations (PDEs) using neural methods has been a long-standing scientific and engineering research pursuit. Physics-Informed Neural Networks (PINNs) have emerged as a promising alternative to traditional numerical methods for solving PDEs. However, the gap between domain…

Cited by 0SourcePDFScholar
2024

Diffusion Policies Creating a Trust Region for Offline Reinforcement Learning

NeurIPS 2024poster

Offline reinforcement learning (RL) leverages pre-collected datasets to train optimal policies. Diffusion Q-Learning (DQL), introducing diffusion models as a powerful and expressive policy class, significantly boosts the performance of offline RL. However, its reliance on iterative denoising samplin…

2024

EFSA: Towards Event-Level Financial Sentiment Analysis

ACL 2024long

In this paper, we extend financial sentiment analysis (FSA) to event-level since events usually serve as the subject of the sentiment in financial text. Though extracting events from the financial text may be conducive to accurate sentiment predictions, it has specialized challenges due to the lengt…

2024

Identifying General Mechanism Shifts in Linear Causal Representations

NeurIPS 2024poster

We consider the linear causal representation learning setting where we observe a linear mixing of $d$ unknown latent factors, which follow a linear structural causal model. Recent work has shown that it is possible to recover the latent factors as well as the underlying structural causal model over…

2024

Towards Editing Time Series

NeurIPS 2024poster

Synthesizing time series data is pivotal in modern society, aiding effective decision making and ensuring privacy preservation in various scenarios. Time series are associated with various attributes, including trends, seasonality, and external information such as location. Recent research has predo…

2024

VulLibGen: Generating Names of Vulnerability-Affected Packages via a Large Language Model

ACL 2024long

Security practitioners maintain vulnerability reports (e.g., GitHub Advisory) to help developers mitigate security risks. An important task for these databases is automatically extracting structured information mentioned in the report, e.g., the affected software packages, to accelerate the defense…

2023

BadRes: Reveal the Backdoors Through Residual Connection

ICASSP 2023accepted

Generally, residual connections are indispensable network components in building Convolutional Neural Networks(CNNs) and Transformers for various downstream tasks in Computer Vision(CV), which encourages skip/short cuts between network blocks. However, the layer-by-layer loopback residual connection…

Cited by 0SourceScholar
2023

iSCAN: Identifying Causal Mechanism Shifts among Nonlinear Additive Noise Models

NeurIPS 2023poster

Structural causal models (SCMs) are widely used in various disciplines to represent causal relationships among variables in complex systems. Unfortunately, the underlying causal structure is often unknown, and estimating it from data remains a challenging task. In many situations, however, the end…

2022

Learning Music Sequence Representation From Text Supervision

ICASSP 2022accepted

Music representation learning is notoriously difficult for its complex human-related concepts contained in the sequence of numerical signals. To excavate better MUsic SEquence Representation from labeled audio, we propose a novel text-supervision pre-training method, namely MUSER. MUSER adopts an au…

Cited by 0SourceScholar
2022

THE-X: Privacy-Preserving Transformer Inference with Homomorphic Encryption

ACL 2022findings

As more and more pre-trained language models adopt on-cloud deployment, the privacy issues grow quickly, mainly for the exposure of plain-text user data (e.g., search history, medical record, bank account). Privacy-preserving inference of transformer models is on the demand of cloud service users. T…

2015

Humanoid full-body manipulation planning with multiple initial guesses and key postures

IROS 2015poster

We present an optimization method to solve coupled redundant inverse kinematics problems and generate trajectories for humanoid robot full-body manipulation. The basic idea of our algorithm is to divide a manipulation task into a series of key postures, generate multiple diverse initial guesses for…

Cited by 3SourceScholar