Search Results for author: Zichen Ma

Found 6 papers, 2 papers with code

Metric Nearness Made Practical

1 code implementation The Thirty-Seventh AAAI Conference on Artificial Intelligence 2023 Wenye Li, Fangchen Yu, Zichen Ma

The first stage computes a fast yet high-quality approximate solution from a set of isometrically embeddable metrics, further improved by an effective heuristic.

valid

AUGUST: an Automatic Generation Understudy for Synthesizing Conversational Recommendation Datasets

no code implementations16 Jun 2023 Yu Lu, Junwei Bao, Zichen Ma, Xiaoguang Han, Youzheng Wu, Shuguang Cui, Xiaodong He

High-quality data is essential for conversational recommendation systems and serves as the cornerstone of the network architecture development and training strategy design.

Conversational Recommendation Knowledge Graphs +1

Personalizing or Not: Dynamically Personalized Federated Learning with Incentives

no code implementations12 Aug 2022 Zichen Ma, Yu Lu, Wenye Li, Shuguang Cui

This dynamically personalized FL technique incentivizes clients to participate in personalizing local models while allowing the adoption of the global model when it performs better.

Personalized Federated Learning

Federated Two-stage Learning with Sign-based Voting

no code implementations10 Dec 2021 Zichen Ma, Zihan Lu, Yu Lu, Wenye Li, JinFeng Yi, Shuguang Cui

In this paper, we design a federated two-stage learning framework that augments prototypical federated learning with a cut layer on devices and uses sign-based stochastic gradient descent with the majority vote method on model updates.

BIG-bench Machine Learning Federated Learning +2

Towards Heterogeneous Clients with Elastic Federated Learning

no code implementations17 Jun 2021 Zichen Ma, Yu Lu, Zihan Lu, Wenye Li, JinFeng Yi, Shuguang Cui

Training in heterogeneous and potentially massive networks introduces bias into the system, which is originated from the non-IID data and the low participation rate in reality.

Federated Learning

RevCore: Review-augmented Conversational Recommendation

1 code implementation Findings (ACL) 2021 Yu Lu, Junwei Bao, Yan Song, Zichen Ma, Shuguang Cui, Youzheng Wu, Xiaodong He

Existing conversational recommendation (CR) systems usually suffer from insufficient item information when conducted on short dialogue history and unfamiliar items.

Conversational Recommendation Decoder +1

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