DPSyn: Experiences in the NIST Differential Privacy Data Synthesis Challenges.

We summarize the experience of participating in two differential privacycompetitions organized by the National Institute of Standards and Technology (NIST). Inthis paper, we document our experiences in the competition, the approaches we have used,the lessons we have learned, and our call to the research community to further bridge thegap between theory and practice in DP research.