Search Results for author: Jiayi Xie

Found 11 papers, 4 papers with code

Automated Essay Scoring via Pairwise Contrastive Regression

no code implementations COLING 2022 Jiayi Xie, Kaiwei Cai, Li Kong, Junsheng Zhou, Weiguang Qu

To this end, in this paper we take inspiration from contrastive learning and propose a novel unified Neural Pairwise Contrastive Regression (NPCR) model in which both objectives are optimized simultaneously as a single loss.

Automated Essay Scoring Contrastive Learning +1

Quantitative Analysis of Molecular Transport in the Extracellular Space Using Physics-Informed Neural Network

no code implementations23 Jan 2024 Jiayi Xie, Hongfeng Li, Jin Cheng, Qingrui Cai, Hanbo Tan, Lingyun Zu, Xiaobo Qu, Hongbin Han

Consequently, the proposed method allows for the quantitative analysis and identification of the specific pattern of molecular transport within the ECS through the calculation of the Peclet number.

UnifiedSSR: A Unified Framework of Sequential Search and Recommendation

1 code implementation21 Oct 2023 Jiayi Xie, Shang Liu, Gao Cong, Zhenzhong Chen

In this work, we propose a Unified framework of Sequential Search and Recommendation (UnifiedSSR) for joint learning of user behavior history in both search and recommendation scenarios.

Self-Supervised Learning

DarkVision: A Benchmark for Low-light Image/Video Perception

no code implementations16 Jan 2023 Bo Zhang, Yuchen Guo, Runzhao Yang, Zhihong Zhang, Jiayi Xie, Jinli Suo, Qionghai Dai

In this paper, we contribute the first multi-illuminance, multi-camera, and low-light dataset, named DarkVision, serving for both image enhancement and object detection.

Autonomous Driving Image Enhancement +5

Hierarchical Transformer with Spatio-Temporal Context Aggregation for Next Point-of-Interest Recommendation

1 code implementation4 Sep 2022 Jiayi Xie, Zhenzhong Chen

The stacking of encoders captures the latent hierarchical structure of the check-in sequence, which is used to predict the next visiting POI.

Deep Causal Reasoning for Recommendations

1 code implementation6 Jan 2022 Yaochen Zhu, Jing Yi, Jiayi Xie, Zhenzhong Chen

As with all observational studies, hidden confounders, which are factors that affect both item exposures and user ratings, lead to a systematic bias in the estimation.

Recommendation Systems Variational Inference

Cross-modal Variational Auto-encoder for Content-based Micro-video Background Music Recommendation

no code implementations15 Jul 2021 Jing Yi, Yaochen Zhu, Jiayi Xie, Zhenzhong Chen

Moreover, the multimodal information is fused by the product-of-experts (PoE) principle, where the semantic information in visual and textual modalities of the micro-video are weighted according to their variance estimations such that the modality with a lower noise level is given more weights.

Music Recommendation

Online and Scalable Model Selection with Multi-Armed Bandits

no code implementations25 Jan 2021 Jiayi Xie, Michael Tashman, John Hoffman, Lee Winikor, Rouzbeh Gerami

Many online applications running on live traffic are powered by machine learning models, for which training, validation, and hyper-parameter tuning are conducted on historical data.

BIG-bench Machine Learning Model Selection +1

Dynamic Bidding Strategies with Multivariate Feedback Control for Multiple Goals in Display Advertising

no code implementations1 Jun 2020 Michael Tashman, Jiayi Xie, John Hoffman, Lee Winikor, Rouzbeh Gerami

This method generates a control score for each KPI, based on both the output of a PID controller module and a metric that quantifies the importance of each KPI for internal business needs.

Predicting the Popularity of Micro-videos with Multimodal Variational Encoder-Decoder Framework

1 code implementation28 Mar 2020 Yaochen Zhu, Jiayi Xie, Zhenzhong Chen

As an emerging type of user-generated content, micro-video drastically enriches people's entertainment experiences and social interactions.

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