Yujia Zheng (郑雹昉)

I am a first-year MS student at CMU Philosophy, fortunately under the supervision of Prof. Kun Zhang. I recently completed my BS from University of Electronic Science and Technology of China. I previously interned at UC Berkeley and NLPR, and was a summer fellow at EPFL.

My research interests lie primarily in causality and machine learning. Currently, I mainly study the following topics: causal discovery, causality-inspired machine learning, and structure learning. I am also interested in the intersection between causality and deep learning (e.g., data mining).

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Research

dise Reliable Causal Discovery with Improved Exact Search and Weaker Assumptions
Ignavier Ng*, Yujia Zheng*, Jiji Zhang, Kun Zhang
NeurIPS 2021, AR: 26%

We proposed (1) a sound super-structure estimation method based on assumption that is intuitively much weaker than faithfulness, (2) an improved exact score-based search method with the constraint of the estimated super-structure, and (3) a local search strategy that improves the scalability of exact search without introducing sub-optimal results, with theoretic guarantee.

dise Learning Elastic Embeddings for Customizing On-Device Recommenders
Tong Chen, Hongzhi Yin, Yujia Zheng, Zi Huang, Yang Wang, Meng Wang
KDD 2021, AR: 15%, arxiv

We present a novel lightweight recommendation paradigm that allows a well-trained recommender to be customized for arbitrary device-specific memory constraints without retraining.

dise Cold-start Sequential Recommendation via Meta Learner
Yujia Zheng, Siyi Liu, Zekun Li, Shu Wu
AAAI 2021, AR: 21%, arxiv

We explore meta-learning to alleviate cold-start problem without any kind of side information.

dise Long-tail Session-based Recommendation
Siyi Liu, Yujia Zheng (corresponding author)
RecSys 2020, AR: 20.3%, arxiv

We introduce Long-tail Recommendation into Session-based Recommendation.

dise DGTN: Dual-channel Graph Transition Network for Session-based Recommendation
Yujia Zheng, Siyi Liu, Zekun Li, Shu Wu
ICDM 2020 NeuRec, long oral, arxiv

We model the cross-session transitions via a channel-aware graph neural network.

dise Heterogenous Graph Collaborative Filtering
Zekun Li*, Yujia Zheng*, Shu Wu, Xiaoyu Zhang, Liang Wang
Preprint, arxiv

We model user-item interactions as a heterogeneous graph which consists of various edge types.

dise Balancing Multi-level Interactions for Session-based Recommendation
Yujia Zheng* (corresponding author), Siyi Liu*, Zailei Zhou
Preprint, arxiv

We introduce Inter-session Item-level Interactions into Session-based Recommendation.

dise ADS: Multimedia Dance Video Automatic Scoring Framework Based on Transfer Learning
Yujia Zheng
ACAI 2020, AR: 35.2%, Link

We propose a multimedia dance video automatic scoring framework.

dise ReFall: Real-time Fall Detection of Continuous Depth Maps with RFD-Net
Yujia Zheng, Siyi Liu, Zairong Wang, Yunbo Rao
IGTA 2019, AR: 18.3%, Link

We propose a real-time fall detection method for the elderly.

Education
uestc

Aug. 2021 - Present , Carnegie Mellon University ,

MS, Logic, Computation & Methodology

uestc

Aug. 2017 - June. 2021 , University of Electronic Science and Technology of China ,

BS, Software Engineering, GPA: 3.98/4.0.

cuhk

Aug. 2019 - Dec. 2019 , University of California, Berkeley ,

Visiting Student, Computational Approaches to Human Learning (CAHL) Research Lab, GPA: 4.0/4.0

ucsd

Feb. 2019 - June. 2019 , National Taiwan University of Science and Technology ,

Exchange Student, Image/Video Processing and Multimedia Lab (IVPML), GPA: 4.0/4.0

Others

Summer Research Fellowship at EPFL.

Top 1% in multiple data competitions.

Member of youth delegation in the 73rd session of the UN General Assembly (UNGA 73).

Volunteer of the 2019 International Conference on Sustainable Development (ICSD 2019).

Can make a living by playing Erhu on the street.


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