Search Results for author: Ruizhong Qiu

Found 13 papers, 10 papers with code

Ask, and it shall be given: On the Turing completeness of prompting

1 code implementation4 Nov 2024 Ruizhong Qiu, Zhe Xu, Wenxuan Bao, Hanghang Tong

In this work, we show that prompting is in fact Turing-complete: there exists a finite-size Transformer such that for any computable function, there exists a corresponding prompt following which the Transformer computes the function.

Prompt Engineering

BACKTIME: Backdoor Attacks on Multivariate Time Series Forecasting

1 code implementation3 Oct 2024 Xiao Lin, Zhining Liu, Dongqi Fu, Ruizhong Qiu, Hanghang Tong

Multivariate Time Series (MTS) forecasting is a fundamental task with numerous real-world applications, such as transportation, climate, and epidemiology.

Epidemiology Multivariate Time Series Forecasting +1

Fair Anomaly Detection For Imbalanced Groups

no code implementations17 Sep 2024 Ziwei Wu, Lecheng Zheng, Yuancheng Yu, Ruizhong Qiu, John Birge, Jingrui He

Due to the imbalanced nature between protected and unprotected groups and the imbalanced distributions of normal examples and anomalies, the learning objectives of most existing anomaly detection methods tend to solely concentrate on the dominating unprotected group.

Anomaly Detection Contrastive Learning +3

AIM: Attributing, Interpreting, Mitigating Data Unfairness

1 code implementation13 Jun 2024 Zhining Liu, Ruizhong Qiu, Zhichen Zeng, Yada Zhu, Hendrik Hamann, Hanghang Tong

Data collected in the real world often encapsulates historical discrimination against disadvantaged groups and individuals.

Fairness

How Efficient is LLM-Generated Code? A Rigorous & High-Standard Benchmark

1 code implementation10 Jun 2024 Ruizhong Qiu, Weiliang Will Zeng, James Ezick, Christopher Lott, Hanghang Tong

Secondly, to set a high-standard for efficiency evaluation, we employ a human expert to design best algorithms and implementations as our reference solutions of efficiency, many of which are much more efficient than existing canonical solutions in HumanEval and HumanEval+.

HumanEval Program Synthesis

Gradient Compressed Sensing: A Query-Efficient Gradient Estimator for High-Dimensional Zeroth-Order Optimization

1 code implementation27 May 2024 Ruizhong Qiu, Hanghang Tong

In this paper, we propose *Gradient Compressed Sensing* (GraCe), a query-efficient and accurate estimator for sparse gradients that uses only $O\big(s\log\log\frac ds\big)$ queries per step and still achieves $O\big(\frac1T\big)$ rate of convergence.

compressed sensing

Discrete-state Continuous-time Diffusion for Graph Generation

1 code implementation19 May 2024 Zhe Xu, Ruizhong Qiu, Yuzhong Chen, Huiyuan Chen, Xiran Fan, Menghai Pan, Zhichen Zeng, Mahashweta Das, Hanghang Tong

Graph is a prevalent discrete data structure, whose generation has wide applications such as drug discovery and circuit design.

Drug Discovery Graph Generation

Ensuring User-side Fairness in Dynamic Recommender Systems

no code implementations29 Aug 2023 Hyunsik Yoo, Zhichen Zeng, Jian Kang, Ruizhong Qiu, David Zhou, Zhining Liu, Fei Wang, Charlie Xu, Eunice Chan, Hanghang Tong

In the ever-evolving landscape of user-item interactions, continual adaptation to newly collected data is crucial for recommender systems to stay aligned with the latest user preferences.

Fairness Recommendation Systems +1

Reconstructing Graph Diffusion History from a Single Snapshot

1 code implementation1 Jun 2023 Ruizhong Qiu, Dingsu Wang, Lei Ying, H. Vincent Poor, Yifang Zhang, Hanghang Tong

They are exclusively based on the maximum likelihood estimation (MLE) formulation and require to know true diffusion parameters.

Graph Neural Network parameter estimation

Networked Time Series Imputation via Position-aware Graph Enhanced Variational Autoencoders

no code implementations29 May 2023 Dingsu Wang, Yuchen Yan, Ruizhong Qiu, Yada Zhu, Kaiyu Guan, Andrew J Margenot, Hanghang Tong

First, we define the problem of imputation over NTS which contains missing values in both node time series features and graph structures.

Decoder Imputation +5

DIMES: A Differentiable Meta Solver for Combinatorial Optimization Problems

1 code implementation8 Oct 2022 Ruizhong Qiu, Zhiqing Sun, Yiming Yang

Recently, deep reinforcement learning (DRL) models have shown promising results in solving NP-hard Combinatorial Optimization (CO) problems.

Combinatorial Optimization Deep Reinforcement Learning +2

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