Search Results for author: Cong Xu

Found 19 papers, 11 papers with code

Pattern-wise Transparent Sequential Recommendation

no code implementations18 Feb 2024 Kun Ma, Cong Xu, Zeyuan Chen, Wei zhang

However, achieving both model transparency and recommendation performance simultaneously is challenging, especially for models that take the entire sequence of items as input without screening.

Decision Making Sequential Recommendation

Understanding the Role of Cross-Entropy Loss in Fairly Evaluating Large Language Model-based Recommendation

no code implementations9 Feb 2024 Cong Xu, Zhangchi Zhu, Jun Wang, Jianyong Wang, Wei zhang

Large language models (LLMs) have gained much attention in the recommendation community; some studies have observed that LLMs, fine-tuned by the cross-entropy loss with a full softmax, could achieve state-of-the-art performance already.

Language Modelling Large Language Model

Inner-IoU: More Effective Intersection over Union Loss with Auxiliary Bounding Box

1 code implementation6 Nov 2023 Hao Zhang, Cong Xu, Shuaijie Zhang

Based on the above, we first analyzed the BBR model and concluded that distinguishing different regression samples and using different scales of auxiliary bounding boxes to calculate losses can effectively accelerate the bounding box regression process.

 Ranked #1 on Object Detection on AI-TOD (mAP50 metric)

Object Detection regression

Graph-enhanced Optimizers for Structure-aware Recommendation Embedding Evolution

no code implementations24 Sep 2023 Cong Xu, Jun Wang, Jianyong Wang, Wei zhang

Embedding plays a critical role in modern recommender systems because they are virtual representations of real-world entities and the foundation for subsequent decision models.

Recommendation Systems

X-TIME: An in-memory engine for accelerating machine learning on tabular data with CAMs

1 code implementation3 Apr 2023 Giacomo Pedretti, John Moon, Pedro Bruel, Sergey Serebryakov, Ron M. Roth, Luca Buonanno, Tobias Ziegler, Cong Xu, Martin Foltin, Paolo Faraboschi, Jim Ignowski, Catherine E. Graves

In this work, we focus on an overall analog-digital architecture implementing a novel increased precision analog CAM and a programmable network on chip allowing the inference of state-of-the-art tree-based ML models, such as XGBoost and CatBoost.

Less Emphasis on Difficult Layer Regions: Curriculum Learning for Singularly Perturbed Convection-Diffusion-Reaction Problems

1 code implementation23 Oct 2022 Yufeng Wang, Cong Xu, Min Yang, Jin Zhang

Although Physics-Informed Neural Networks (PINNs) have been successfully applied in a wide variety of science and engineering fields, they can fail to accurately predict the underlying solution in slightly challenging convection-diffusion-reaction problems.

Sparse-based Domain Adaptation Network for OCTA Image Super-Resolution Reconstruction

no code implementations25 Jul 2022 Huaying Hao, Cong Xu, Dan Zhang, Qifeng Yan, Jiong Zhang, Yue Liu, Yitian Zhao

To be more specific, we first perform a simple degradation of the 3x3 mm2/high-resolution (HR) image to obtain the synthetic LR image.

Domain Adaptation Image Super-Resolution

Understanding Adversarial Robustness from Feature Maps of Convolutional Layers

1 code implementation25 Feb 2022 Cong Xu, Wei zhang, Jun Wang, Min Yang

Our theoretical analysis discovers that larger convolutional feature maps before average pooling can contribute to better resistance to perturbations, but the conclusion is not true for max pooling.

Adversarial Robustness

Improve Deep Image Inpainting by Emphasizing the Complexity of Missing Regions

no code implementations13 Feb 2022 Yufeng Wang, Dan Li, Cong Xu, Min Yang

Deep image inpainting research mainly focuses on constructing various neural network architectures or imposing novel optimization objectives.

Image Inpainting

Missingness Augmentation: A General Approach for Improving Generative Imputation Models

1 code implementation31 Jul 2021 Yufeng Wang, Dan Li, Cong Xu, Min Yang

However, data augmentation, as a simple yet effective method, has not received enough attention in this area.

Data Augmentation Imputation

Adversarial Momentum-Contrastive Pre-Training

1 code implementation24 Dec 2020 Cong Xu, Dan Li, Min Yang

Recently proposed adversarial self-supervised learning methods usually require big batches and long training epochs to extract robust features, which will bring heavy computational overhead on platforms with limited resources.

Contrastive Learning Data Augmentation +1

A Fast deflation Method for Sparse Principal Component Analysis via Subspace Projections

no code implementations3 Dec 2019 Cong Xu, Min Yang, Jin Zhang

The implementation of conventional sparse principal component analysis (SPCA) on high-dimensional data sets has become a time consuming work.

Coordinating Filters for Faster Deep Neural Networks

5 code implementations ICCV 2017 Wei Wen, Cong Xu, Chunpeng Wu, Yandan Wang, Yiran Chen, Hai Li

Moreover, Force Regularization better initializes the low-rank DNNs such that the fine-tuning can converge faster toward higher accuracy.

Cannot find the paper you are looking for? You can Submit a new open access paper.