Random mappings designed for commercial search engines. - Roger Donaldson; Arijit Gupta; Yaniv Plan; Thomas Reimer (CoRR, 2015)

Recommending Groups to Users Using User-Group Engagement and Time-Dependent Matrix Factorization. - Xin Wang 019; Roger Donaldson; Christopher Nell; Peter Gorniak; Martin Ester; Jiajun Bu (AAAI, 2016)