Social media have the potential to provide timely information about emergency situations and sudden events. However, finding relevant information among millions of posts being posted every day can be difficult, and developing a data analysis project usually requires time and technical skills. This study presents an approach that provides flexible support for analyzing social media, particularly during emergencies. Different use cases in which social media analysis can be adopted are introduced, and the challenges of retrieving information from large sets of posts are discussed. The focus is on analyzing images and text contained in social media posts and a set of automatic data processing tools for filtering, classification, and geolocation of content with a human-in-the-loop approach to support the data analyst. Such support includes both feedback and suggestions to configure automated tools, and crowdsourcing to gather inputs from citizens. The results are validated by discussing three case studies developed within the Crowd4SDG H2020 European project.

本研究提出了一种方法，对社交媒体进行灵活的支持，特别是在紧急情况下的社交媒体分析，基于自动化数据处理的工具可用于筛选、分类和地理位置标记内容，同时杂交方法支持人工数据分析师的反馈和建议，从民众中收集输入。通过Euroopean项目中的三个案例研究进行结果验证。

在Crowd4SDG中使用众包分析社交媒体