Search Results for author: Eli Chien

Found 22 papers, 13 papers with code

Stochastic Gradient Langevin Unlearning

no code implementations25 Mar 2024 Eli Chien, Haoyu Wang, Ziang Chen, Pan Li

Our approach achieves a similar utility under the same privacy constraint while using $2\%$ and $10\%$ of the gradient computations compared with the state-of-the-art gradient-based approximate unlearning methods for mini-batch and full-batch settings, respectively.

Machine Unlearning

Machine Unlearning of Pre-trained Large Language Models

1 code implementation23 Feb 2024 Jin Yao, Eli Chien, Minxin Du, Xinyao Niu, Tianhao Wang, Zezhou Cheng, Xiang Yue

This study investigates the concept of the `right to be forgotten' within the context of large language models (LLMs).

Machine Unlearning

Langevin Unlearning: A New Perspective of Noisy Gradient Descent for Machine Unlearning

no code implementations18 Jan 2024 Eli Chien, Haoyu Wang, Ziang Chen, Pan Li

We propose Langevin unlearning, an unlearning framework based on noisy gradient descent with privacy guarantees for approximate unlearning problems.

Machine Unlearning

Breaking the Trilemma of Privacy, Utility, Efficiency via Controllable Machine Unlearning

1 code implementation28 Oct 2023 Zheyuan Liu, Guangyao Dou, Yijun Tian, Chunhui Zhang, Eli Chien, Ziwei Zhu

Exploring the full spectrum of trade-offs between privacy, model utility, and runtime efficiency is critical for practical unlearning scenarios.

Machine Unlearning

On the Inherent Privacy Properties of Discrete Denoising Diffusion Models

no code implementations24 Oct 2023 Rongzhe Wei, Eleonora Kreačić, Haoyu Wang, Haoteng Yin, Eli Chien, Vamsi K. Potluru, Pan Li

Focusing on per-instance differential privacy (pDP), our framework elucidates the potential privacy leakage for each data point in a given training dataset, offering insights into data preprocessing to reduce privacy risks of the synthetic dataset generation via DDMs.

Denoising Privacy Preserving

Federated Classification in Hyperbolic Spaces via Secure Aggregation of Convex Hulls

2 code implementations14 Aug 2023 Saurav Prakash, Jin Sima, Chao Pan, Eli Chien, Olgica Milenkovic

Third, we compute the complexity of the convex hulls in hyperbolic spaces to assess the extent of data leakage; at the same time, in order to limit communication cost for the hulls, we propose a new quantization method for the Poincar\'e disc coupled with Reed-Solomon-like encoding.

Federated Learning graph partitioning +2

Representer Point Selection for Explaining Regularized High-dimensional Models

no code implementations31 May 2023 Che-Ping Tsai, Jiong Zhang, Eli Chien, Hsiang-Fu Yu, Cho-Jui Hsieh, Pradeep Ravikumar

We introduce a novel class of sample-based explanations we term high-dimensional representers, that can be used to explain the predictions of a regularized high-dimensional model in terms of importance weights for each of the training samples.

Binary Classification Collaborative Filtering +1

PINA: Leveraging Side Information in eXtreme Multi-label Classification via Predicted Instance Neighborhood Aggregation

1 code implementation21 May 2023 Eli Chien, Jiong Zhang, Cho-Jui Hsieh, Jyun-Yu Jiang, Wei-Cheng Chang, Olgica Milenkovic, Hsiang-Fu Yu

Unlike most existing XMC frameworks that treat labels and input instances as featureless indicators and independent entries, PINA extracts information from the label metadata and the correlations among training instances.

Extreme Multi-Label Classification Recommendation Systems

Unlearning Graph Classifiers with Limited Data Resources

1 code implementation6 Nov 2022 Chao Pan, Eli Chien, Olgica Milenkovic

As the demand for user privacy grows, controlled data removal (machine unlearning) is becoming an important feature of machine learning models for data-sensitive Web applications such as social networks and recommender systems.

Graph Classification Machine Unlearning +1

Certified Graph Unlearning

1 code implementation18 Jun 2022 Eli Chien, Chao Pan, Olgica Milenkovic

For example, when unlearning $20\%$ of the nodes on the Cora dataset, our approach suffers only a $0. 1\%$ loss in test accuracy while offering a $4$-fold speed-up compared to complete retraining.

GPR Machine Unlearning

HyperAid: Denoising in hyperbolic spaces for tree-fitting and hierarchical clustering

1 code implementation19 May 2022 Eli Chien, Puoya Tabaghi, Olgica Milenkovic

Furthermore, it is currently not known how to choose the most suitable approximation objective for noisy fitting.

Clustering Denoising

Provably Accurate and Scalable Linear Classifiers in Hyperbolic Spaces

1 code implementation7 Mar 2022 Chao Pan, Eli Chien, Puoya Tabaghi, Jianhao Peng, Olgica Milenkovic

The excellent performance of the Poincar\'e second-order and strategic perceptrons shows that the proposed framework can be extended to general machine learning problems in hyperbolic spaces.

Time Series Analysis

Node Feature Extraction by Self-Supervised Multi-scale Neighborhood Prediction

4 code implementations ICLR 2022 Eli Chien, Wei-Cheng Chang, Cho-Jui Hsieh, Hsiang-Fu Yu, Jiong Zhang, Olgica Milenkovic, Inderjit S Dhillon

We also provide a theoretical analysis that justifies the use of XMC over link prediction and motivates integrating XR-Transformers, a powerful method for solving XMC problems, into the GIANT framework.

Extreme Multi-Label Classification Language Modelling +3

Highly Scalable and Provably Accurate Classification in Poincare Balls

1 code implementation8 Sep 2021 Eli Chien, Chao Pan, Puoya Tabaghi, Olgica Milenkovic

For hierarchical data, the space of choice is a hyperbolic space since it guarantees low-distortion embeddings for tree-like structures.

Classification Time Series Analysis

You are AllSet: A Multiset Function Framework for Hypergraph Neural Networks

1 code implementation ICLR 2022 Eli Chien, Chao Pan, Jianhao Peng, Olgica Milenkovic

We propose AllSet, a new hypergraph neural network paradigm that represents a highly general framework for (hyper)graph neural networks and for the first time implements hypergraph neural network layers as compositions of two multiset functions that can be efficiently learned for each task and each dataset.

Benchmarking Node Classification

Linear Classifiers in Product Space Forms

1 code implementation19 Feb 2021 Puoya Tabaghi, Chao Pan, Eli Chien, Jianhao Peng, Olgica Milenkovic

The results show that classification in low-dimensional product space forms for scRNA-seq data offers, on average, a performance improvement of $\sim15\%$ when compared to that in Euclidean spaces of the same dimension.

Adaptive Universal Generalized PageRank Graph Neural Network

1 code implementation ICLR 2021 Eli Chien, Jianhao Peng, Pan Li, Olgica Milenkovic

We address these issues by introducing a new Generalized PageRank (GPR) GNN architecture that adaptively learns the GPR weights so as to jointly optimize node feature and topological information extraction, regardless of the extent to which the node labels are homophilic or heterophilic.

GPR Node Classification on Non-Homophilic (Heterophilic) Graphs +1

Support Estimation with Sampling Artifacts and Errors

no code implementations14 Jun 2020 Eli Chien, Olgica Milenkovic, Angelia Nedich

Here we introduce the first known approach to support estimation in the presence of sampling artifacts and errors where each sample is assumed to arise from a Poisson repeat channel which simultaneously captures repetitions and deletions of samples.

Active learning in the geometric block model

no code implementations15 Nov 2019 Eli Chien, Antonia Maria Tulino, Jaime Llorca

Galhotra et al. recently proposed a motif-counting algorithm for unsupervised community detection in the geometric block model that is proved to be near-optimal.

Active Learning Community Detection +1

Multi-MotifGAN (MMGAN): Motif-targeted Graph Generation and Prediction

no code implementations8 Nov 2019 Anuththari Gamage, Eli Chien, Jianhao Peng, Olgica Milenkovic

Generative models are successful at retaining pairwise associations in the underlying networks but often fail to capture higher-order connectivity patterns known as network motifs.

Generative Adversarial Network Graph Generation

Landing Probabilities of Random Walks for Seed-Set Expansion in Hypergraphs

no code implementations20 Oct 2019 Eli Chien, Pan Li, Olgica Milenkovic

We describe the first known mean-field study of landing probabilities for random walks on hypergraphs.

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