Search Results for author: Yuyan Wang

Found 13 papers, 1 papers with code

Mean estimation in the add-remove model of differential privacy

no code implementations11 Dec 2023 Alex Kulesza, Ananda Theertha Suresh, Yuyan Wang

We propose a new algorithm and show that it is min-max optimal, achieving the best possible constant in the leading term of the mean squared error for all $\epsilon$, and that this constant is the same as the optimal algorithm under the swap model.

Hierarchical Reinforcement Learning for Modeling User Novelty-Seeking Intent in Recommender Systems

no code implementations2 Jun 2023 Pan Li, Yuyan Wang, Ed H. Chi, Minmin Chen

Hierarchical structure, on the other hand, exists in a user's novelty-seeking intent, which is manifested as a static and intrinsic user preference for seeking novelty along with a dynamic session-based propensity.

Hierarchical Reinforcement Learning Recommendation Systems +1

Prompt Tuning Large Language Models on Personalized Aspect Extraction for Recommendations

no code implementations2 Jun 2023 Pan Li, Yuyan Wang, Ed H. Chi, Minmin Chen

For the aspect-based recommendation component, the extracted aspects are concatenated with the usual user and item features used by the recommendation model.

Aspect Extraction

URM4DMU: an user represention model for darknet markets users

no code implementations19 Mar 2023 Hongmeng Liu, Jiapeng Zhao, Yixuan Huo, Yuyan Wang, Chun Liao, Liyan Shen, Shiyao Cui, Jinqiao Shi

Traditional user representation methods mainly rely on modeling the text information of posts and cannot capture the temporal content and the forum interaction of posts.

Latent User Intent Modeling for Sequential Recommenders

no code implementations17 Nov 2022 Bo Chang, Alexandros Karatzoglou, Yuyan Wang, Can Xu, Ed H. Chi, Minmin Chen

We demonstrate the effectiveness of the latent user intent modeling via offline analyses as well as live experiments on a large-scale industrial recommendation platform.

Recommendation Systems

Robust Online Correlation Clustering

no code implementations NeurIPS 2021 Silvio Lattanzi, Benjamin Moseley, Sergei Vassilvitskii, Yuyan Wang, Rudy Zhou

In correlation clustering we are given a set of points along with recommendations whether each pair of points should be placed in the same cluster or into separate clusters.

Clustering

Understanding and Improving Fairness-Accuracy Trade-offs in Multi-Task Learning

no code implementations4 Jun 2021 Yuyan Wang, Xuezhi Wang, Alex Beutel, Flavien Prost, Jilin Chen, Ed H. Chi

This presents a multi-dimensional Pareto frontier on (1) the trade-off between group fairness and accuracy with respect to each task, as well as (2) the trade-offs across multiple tasks.

Fairness Multi-Task Learning

An Objective for Hierarchical Clustering in Euclidean Space and its Connection to Bisecting K-means

1 code implementation30 Aug 2020 Benjamin Moseley, Yuyan Wang

The paper builds a theoretical connection between this objective and the bisecting k-means algorithm.

Clustering

Beyond Point Estimate: Inferring Ensemble Prediction Variation from Neuron Activation Strength in Recommender Systems

no code implementations17 Aug 2020 Zhe Chen, Yuyan Wang, Dong Lin, Derek Zhiyuan Cheng, Lichan Hong, Ed H. Chi, Claire Cui

Despite deep neural network (DNN)'s impressive prediction performance in various domains, it is well known now that a set of DNN models trained with the same model specification and the same data can produce very different prediction results.

Model-based Reinforcement Learning Recommendation Systems

Small Towers Make Big Differences

no code implementations13 Aug 2020 Yuyan Wang, Zhe Zhao, Bo Dai, Christopher Fifty, Dong Lin, Lichan Hong, Ed H. Chi

A delicate balance between multi-task generalization and multi-objective optimization is therefore needed for finding a better trade-off between efficiency and generalization.

Multi-Task Learning

Relational Algorithms for k-means Clustering

no code implementations1 Aug 2020 Benjamin Moseley, Kirk Pruhs, Alireza Samadian, Yuyan Wang

Few relational algorithms are known and this paper offers techniques for designing relational algorithms as well as characterizing their limitations.

Clustering Relational Reasoning

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