Search Results for author: Jiawei Ge

Found 11 papers, 2 papers with code

Securing Equal Share: A Principled Approach for Learning Multiplayer Symmetric Games

no code implementations6 Jun 2024 Jiawei Ge, Yuanhao Wang, Wenzhe Li, Chi Jin

Our experimental results highlight worst-case scenarios where meta-algorithms from prior state-of-the-art systems for multiplayer games fail to secure an equal share, while our algorithm succeeds, demonstrating the effectiveness of our approach.

Optimal Aggregation of Prediction Intervals under Unsupervised Domain Shift

1 code implementation16 May 2024 Jiawei Ge, Debarghya Mukherjee, Jianqing Fan

In this paper, we propose methodologies for aggregating prediction intervals to obtain one with minimal width and adequate coverage on the target domain under unsupervised domain shift, under which we have labeled samples from a related source domain and unlabeled covariates from the target domain.

Prediction Intervals

Query-Based Knowledge Sharing for Open-Vocabulary Multi-Label Classification

no code implementations2 Jan 2024 Xuelin Zhu, Jian Liu, Dongqi Tang, Jiawei Ge, Weijia Liu, Bo Liu, Jiuxin Cao

Identifying labels that did not appear during training, known as multi-label zero-shot learning, is a non-trivial task in computer vision.

Knowledge Distillation Multi-Label Classification +1

Beyond Visual Cues: Synchronously Exploring Target-Centric Semantics for Vision-Language Tracking

no code implementations28 Nov 2023 Jiawei Ge, Xiangmei Chen, Jiuxin Cao, Xuelin Zhu, Bo Liu

However, current VL trackers have not fully exploited the power of VL learning, as they suffer from limitations such as heavily relying on off-the-shelf backbones for feature extraction, ineffective VL fusion designs, and the absence of VL-related loss functions.

Object Tracking Representation Learning

Maximum Likelihood Estimation is All You Need for Well-Specified Covariate Shift

no code implementations27 Nov 2023 Jiawei Ge, Shange Tang, Jianqing Fan, Cong Ma, Chi Jin

This paper addresses this fundamental question by proving that, surprisingly, classical Maximum Likelihood Estimation (MLE) purely using source data (without any modification) achieves the minimax optimality for covariate shift under the well-specified setting.

regression Retrieval

UTOPIA: Universally Trainable Optimal Prediction Intervals Aggregation

no code implementations28 Jun 2023 Jianqing Fan, Jiawei Ge, Debarghya Mukherjee

In the specific case where the prediction methods are elementary basis functions, as in kernel and spline bases, our method becomes the construction of a prediction band.

Conformal Prediction Prediction Intervals +3

On the Provable Advantage of Unsupervised Pretraining

no code implementations2 Mar 2023 Jiawei Ge, Shange Tang, Jianqing Fan, Chi Jin

Unsupervised pretraining, which learns a useful representation using a large amount of unlabeled data to facilitate the learning of downstream tasks, is a critical component of modern large-scale machine learning systems.

Contrastive Learning Representation Learning

Two-Stream Transformer for Multi-Label Image Classification

1 code implementation ACMMM 2022 Xuelin Zhu, Jiuxin Cao, Jiawei Ge, Weijia Liu, Bo Liu

Specifically, in each layer of TSFormer, a cross-modal attention module is developed to aggregate visual features from spatial stream into semantic stream and update label semantics via a residual connection.

Classification Multi-Label Image Classification +1

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