Jiajing Xu

According to our database, Jiajing Xu authored at least 17 papers between 2015 and 2026.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2026

A Production-Ready RL Framework for Personalized Utility Tuning with Pareto Sweeping in Pinterest Recommender Systems.

Yichu Zhou, Mehdi Ben Ayed, Lin Yang, Jiacong He, Andreanne Lemay, Jiaye Wang, Jaewon Yang, Josie Zeng, Dhruvil Deven Badani, Yijie Dylan Wang, Jiajing Xu, Charles Rosenberg

CoRR, May, 2026

2025

Deep Reinforcement Learning for Ranking Utility Tuning in the Ad Recommender System at Pinterest.

Xiao Yang, Mehdi Ben Ayed, Longyu Zhao, Fan Zhou, Yuchen Shen, Abe Engle, Jinfeng Zhuang, Ling Leng, Jiajing Xu, Charles Rosenberg, Prathibha Deshikachar

CoRR, September, 2025

PinRec: Outcome-Conditioned, Multi-Token Generative Retrieval for Industry-Scale Recommendation Systems.

Anirudhan Badrinath, Prabhat Agarwal, Laksh Bhasin, Jaewon Yang, Jiajing Xu, Charles Rosenberg

CoRR, April, 2025

Unified Preference Optimization: Language Model Alignment Beyond the Preference Frontier.

Anirudhan Badrinath, Prabhat Agarwal, Jiajing Xu

Trans. Mach. Learn. Res., 2025

Deep Reinforcement Learning for Ranking Utility Tuning in the Ad Recommender System at Pinterest.

Xiao Yang, Mehdi Ayed, Longyu Zhao, Fan Zhou, Yuchen Shen, Abe Engle, Jinfeng Zhuang, Ling Leng, Jiajing Xu, Charles Rosenberg, Prathibha Deshikachar

Proceedings of the Nineteenth ACM Conference on Recommender Systems, 2025

PinFM: Foundation Model for User Activity Sequences at a Billion-scale Visual Discovery Platform.

Xiangyi Chen, Kousik Rajesh, Matthew Lawhon, Zelun Wang, Hanyu Li, Haomiao Li, Saurabh Vishwas Joshi, Pong Eksombatchai, Jaewon Yang, Yi-Ping Hsu, Jiajing Xu, Charles Rosenberg

Proceedings of the Nineteenth ACM Conference on Recommender Systems, 2025

OmniSage: Large Scale, Multi-Entity Heterogeneous Graph Representation Learning.

Anirudhan Badrinath, Alex Yang, Kousik Rajesh, Prabhat Agarwal, Jaewon Yang, Haoyu Chen, Jiajing Xu, Charles Rosenberg

Proceedings of the 31st ACM SIGKDD Conference on Knowledge Discovery and Data Mining, V.2, 2025

Autoregressive Generative Retrieval for Industrial-Scale Recommendations at Pinterest.

Prabhat Agarwal, Anirudhan Badrinath, Laksh Bhasin, Jaewon Yang, Jiajing Xu, Charles Rosenberg

Proceedings of the 34th ACM International Conference on Information and Knowledge Management, 2025

TransAct V2: Lifelong User Action Sequence Modeling on Pinterest Recommendation.

Xue Xia, Saurabh Vishwas Joshi, Kousik Rajesh, Kangnan Li, Yangyi Lu, Nikil Pancha, Dhruvil Deven Badani, Jiajing Xu, Pong Eksombatchai

Proceedings of the 34th ACM International Conference on Information and Knowledge Management, 2025

2024

Hybrid Preference Optimization: Augmenting Direct Preference Optimization with Auxiliary Objectives.

Anirudhan Badrinath, Prabhat Agarwal, Jiajing Xu

CoRR, 2024

OmniSearchSage: Multi-Task Multi-Entity Embeddings for Pinterest Search.

Prabhat Agarwal, Minhazul Islam SK, Nikil Pancha, Kurchi Subhra Hazra, Jiajing Xu, Chuck Rosenberg

Proceedings of the Companion Proceedings of the ACM on Web Conference 2024, 2024

Bootstrapping Conditional Retrieval for User-to-Item Recommendations.

Hongtao Lin, Haoyu Chen, Jaewon Yang, Jiajing Xu

Proceedings of the 18th ACM Conference on Recommender Systems, 2024

Privacy Preserving Conversion Modeling in Data Clean Room.

Kungang Li, Xiangyi Chen, Ling Leng, Jiajing Xu, Jiankai Sun, Behnam Rezaei

Proceedings of the 18th ACM Conference on Recommender Systems, 2024

Taming the One-Epoch Phenomenon in Online Recommendation System by Two-stage Contrastive ID Pre-training.

Yi-Ping Hsu, Po-Wei Wang, Chantat Eksombatchai, Jiajing Xu

Proceedings of the 18th ACM Conference on Recommender Systems, 2024

2022

Rethinking Personalized Ranking at Pinterest: An End-to-End Approach.

Jiajing Xu, Andrew Zhai, Charles Rosenberg

Proceedings of the RecSys '22: Sixteenth ACM Conference on Recommender Systems, Seattle, WA, USA, September 18, 2022

2020

Evolution of a Web-Scale Near Duplicate Image Detection System.

Andrey Gusev, Jiajing Xu

Proceedings of the WWW '20: The Web Conference 2020, Taipei, Taiwan, April 20-24, 2020, 2020

2015

Visual Search at Pinterest.

Yushi Jing, David C. Liu, Dmitry Kislyuk, Andrew Zhai, Jiajing Xu, Jeff Donahue, Sarah Tavel

Proceedings of the 21th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, 2015