This is a version of the 311 dataset used in the following paper:
Data Polygamy: The Many-Many Relationships among Urban Spatio-Temporal Data Sets, F. Chirigati, H. Doraiswamy, T. Damoulas, and J. Freire. In Proceedings of the 2016 ACM SIGMOD International Conference on Management of Data (SIGMOD), 2016
The dataset includes records from 311, a telephone number that provides non-emergency services to New York City, from 2003 to 2014.
The original data is available at the NYC Open Data portal: https://data.cityofnewyork.us/d/erm2-nwe9?category=Social-Services&view_name=311-Service-Requests-from-2010-to-Present