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Haoran Deng

7 accepted papers

2026

ARLArena: Demystifying Policy Gradient Stability in Agentic Reinforcement Learning

ICML 2026poster

Agentic reinforcement learning (ARL) has rapidly gained attention as a promising paradigm for training agents to solve complex, multi-step interactive tasks. In this paper, we first propose $\textbf{ARLArena}$, a fair and systematic analysis framework that encompasses a broad spectrum of ARL algorit…

Cited by 0SourceScholar
2026

Beyond Length: Quantifying Long-Range Information for Long-Context LLM Pretraining Data

ICLR 2026poster

Long-context language models unlock advanced capabilities in reasoning, code generation, and document summarization by leveraging dependencies across extended spans of text. However, much readily available long-text data does not genuinely require extended context, as most spans can be predicted wit…

Cited by 0SourceScholar
2025

A Skewness-Based Criterion for Addressing Heteroscedastic Noise in Causal Discovery

ICLR 2025poster

Real-world data often violates the equal-variance assumption (homoscedasticity), making it essential to account for heteroscedastic noise in causal discovery. In this work, we explore heteroscedastic symmetric noise models (HSNMs), where the effect $Y$ is modeled as $Y = f(X) + \sigma(X)N$, with $X$…

Cited by 0SourcePDFScholar
2024

Fast Updating Truncated SVD for Representation Learning with Sparse Matrices

ICLR 2024poster

Updating truncated Singular Value Decomposition (SVD) has extensive applications in representation learning. The continuous evolution of massive-scaled data matrices in practical scenarios highlights the importance of aligning SVD-based models with fast-paced updates. Recent methods for updating tru…

Cited by 2SourcePDFScholar
2024

Parameter-efficient Prompt Learning for 3D Point Cloud Understanding

ICRA 2024poster

This paper presents a parameter-efficient prompt tuning method, named PPT, to adapt a large multi-modal model for 3D point cloud understanding. Existing strategies are quite expensive in computation and storage, and depend on timeconsuming prompt engineering. We address the problems from three aspec…

Cited by 7SourcecodeScholar
2023

Kalmanbot: Kalmannet-Aided Bollinger Bands for Pairs Trading

ICASSP 2023accepted

Pairs trading is a family of trading policies based on monitoring the relationships between pairs of assets. A common pairs trading approach relies on state space (SS) modeling, from which financial indicators can be obtained with low complexity and latency using a Kalman filter (KF), and processed…

Cited by 0SourceScholar
2022

Beyond Homophily: Structure-aware Path Aggregation Graph Neural Network

IJCAI 2022poster

Graph neural networks (GNNs) have been intensively studied in various real-world tasks. However, the homophily assumption of GNNs' aggregation function limits their representation learning ability in heterophily graphs. In this paper, we shed light on the path level patterns in graphs that can exp…