Search Results for author: Zi-Hao Qiu

Found 6 papers, 6 papers with code

To Cool or not to Cool? Temperature Network Meets Large Foundation Models via DRO

1 code implementation6 Apr 2024 Zi-Hao Qiu, Siqi Guo, Mao Xu, Tuo Zhao, Lijun Zhang, Tianbao Yang

In this paper, we present a principled framework for learning a small yet generalizable temperature prediction network (TempNet) to improve LFMs.

LibAUC: A Deep Learning Library for X-Risk Optimization

1 code implementation5 Jun 2023 Zhuoning Yuan, Dixian Zhu, Zi-Hao Qiu, Gang Li, Xuanhui Wang, Tianbao Yang

This paper introduces the award-winning deep learning (DL) library called LibAUC for implementing state-of-the-art algorithms towards optimizing a family of risk functions named X-risks.

Benchmarking Classification +2

Blockwise Stochastic Variance-Reduced Methods with Parallel Speedup for Multi-Block Bilevel Optimization

1 code implementation30 May 2023 Quanqi Hu, Zi-Hao Qiu, Zhishuai Guo, Lijun Zhang, Tianbao Yang

In this paper, we consider non-convex multi-block bilevel optimization (MBBO) problems, which involve $m\gg 1$ lower level problems and have important applications in machine learning.

Bilevel Optimization

Not All Semantics are Created Equal: Contrastive Self-supervised Learning with Automatic Temperature Individualization

1 code implementation19 May 2023 Zi-Hao Qiu, Quanqi Hu, Zhuoning Yuan, Denny Zhou, Lijun Zhang, Tianbao Yang

In this paper, we aim to optimize a contrastive loss with individualized temperatures in a principled and systematic manner for self-supervised learning.

Self-Supervised Learning

Provable Stochastic Optimization for Global Contrastive Learning: Small Batch Does Not Harm Performance

1 code implementation24 Feb 2022 Zhuoning Yuan, Yuexin Wu, Zi-Hao Qiu, Xianzhi Du, Lijun Zhang, Denny Zhou, Tianbao Yang

In this paper, we study contrastive learning from an optimization perspective, aiming to analyze and address a fundamental issue of existing contrastive learning methods that either rely on a large batch size or a large dictionary of feature vectors.

Contrastive Learning Self-Supervised Learning +1

Large-scale Stochastic Optimization of NDCG Surrogates for Deep Learning with Provable Convergence

1 code implementation24 Feb 2022 Zi-Hao Qiu, Quanqi Hu, Yongjian Zhong, Lijun Zhang, Tianbao Yang

To the best of our knowledge, this is the first time that stochastic algorithms are proposed to optimize NDCG with a provable convergence guarantee.

Information Retrieval Retrieval +1

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