Economics in Recommender Systems
 Wang, Jian, and Yi Zhang. "Utilizing marginal net utility for recommendation in e-commerce." SIGIR 2011.
 Zhao, Qi, et al. "Multi-product utility maximization for economic recommendation." WSDM 2017.
1.2 Substitutable & Complementary
 McAuley, Julian, Rahul Pandey, and Jure Leskovec. "Inferring networks of substitutable and complementary products." KDD 2015.
 McAuley, Julian, et al. "Image-based recommendations on styles and substitutes." SIGIR 2015.
 Wang, Zihan, et al. "A path-constrained framework for discriminating substitutable and complementary products in e-commerce." WSDM 2018. (Best Student Paper Award)
 Zhang, Yin, et al. "Quality-aware neural complementary item recommendation." RecSys 2018.
1.3 Causal Inference
 Liang, Dawen, Laurent Charlin, and David M. Blei. "Causal Inference for Recommendation." UAI 2016.
 Liang, Dawen, et al. "Modeling user exposure in recommendation." WWW 2016.
 Bonner, Stephen, and Flavian Vasile. "Causal embeddings for recommendation." RecSys 2018. (Best Paper Award)
 Schnabel, Tobias, et al. "Recommendations as treatments: Debiasing learning and evaluation." ICML 2016.
 Zhang, Xiaoying, Junzhou Zhao, and John Lui. "Modeling the assimilation-contrast effects in online product rating systems: Debiasing and recommendations." RecSys 2017. (Best Paper Award)
 Chaney, Allison JB, Brandon M. Stewart, and Barbara E. Engelhardt. "How algorithmic confounding in recommendation systems increases homogeneity and decreases utility." RecSys 2018.
 McAuley, Julian John, and Jure Leskovec. "From amateurs to connoisseurs: modeling the evolution of user expertise through online reviews." WWW 2013.
 Wan, Mengting, et al. "Modeling consumer preferences and price sensitivities from large-scale grocery shopping transaction logs." WWW 2017.
 Zhang, Yongfeng, et al. "Daily-aware personalized recommendation based on feature-level time series analysis." WWW 2015.
 Wang, Jian, and Yi Zhang. "Opportunity model for e-commerce recommendation: right product; right time." SIGIR 2013.
 Wan, Mengting, et al. "Representing and Recommending Shopping Baskets with Complementarity, Compatibility, and Loyalty." CIKM 2018.
2 Research Groups
1) Yongfeng Zhang, Yi Zhang, Min Zhang, Shaoping Ma @THU / UCSC / Rutgers
2) Mengting Wan, Julian McAuley @UCSD