Abstract: Systems and methods are provided to improve data sets and/or data set collection. An entity submits a request for a data set crowd sourced database system. Contributor(s) work to complete the data set, such as by submitting components of the data set. Multiple separate users contributing to a data set improves the diversity of a data set. The crowd sourced database system ranks contributing users using a ranking algorithm based on the previous submissions of a user. The crowd sourced database system ranks contributions based on the quality of the data submitted. The crowd sourced database system anonymizes data contributions where data privacy considerations are required or are important.