Microblog Retrieval for Disaster Relief: How To Create Ground Truths?

Microblogging services like Twitter are an important source of real-time information during disasters and can be utilized to aid rescue, relief and rehabilitation efforts. The focus of this work is on the creation of gold standard data for automatic retrieval of helpful tweets. Using various experiments on the gold standard data prepared in the FIRE 2016 Microblog Track [3], we show that the gold standard data prepared in [3] missed many relevant tweets. We also demonstrate that using a machine learning model can help in retrieving the remaining relevant tweets by training an SVM model on a subset of the data and using it to get the most useful tweets in the entire dataset. We obtain high precision and recall even with very little training data, which makes such a model suitable for use in a real-time disaster situation.