OpenStreetMap Data Quality

This document discusses tools for managing data quality in OpenStreetMap, a crowdsourced mapping project. It describes the project's history and growth. There are two main types of tools - error detection tools that find errors in the map, and monitoring tools that track changes over time. While some geographic analysis methods could be used, currently the focus is on social and crowdsourcing approaches like allowing users to iteratively improve the map and having experienced mappers review changes. Ensuring high data quality as the project grows is an ongoing challenge.