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- W1716898611 abstract "During recent years the online social networks (in particular Twitter) have become an important alternative information channel to traditional media during natural disasters, but the amount and diversity of messages poses the challenge of information overload to end users. The goal of our research is to develop an automatic classifier of tweets to feed a mobile application that reduces the difficulties that citizens face to get relevant information during natural disasters. In this paper, we present in detail the process to build a classifier that filters tweets relevant and non-relevant to an earthquake. By using a dataset from the Chilean earthquake of 2010, we first build and validate a ground truth, and then we contribute by presenting in detail the effect of class imbalance and dimensionality reduction over 5 classifiers. We show how the performance of these models is affected by these variables, providing important considerations at the moment of building these systems." @default.
- W1716898611 created "2016-06-24" @default.
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- W1716898611 date "2015-05-18" @default.
- W1716898611 modified "2023-09-26" @default.
- W1716898611 title "Identifying Relevant Messages in a Twitter-based Citizen Channel for Natural Disaster Situations" @default.
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- W1716898611 doi "https://doi.org/10.1145/2740908.2741719" @default.
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