Acquiring Background Knowledge to Improve Moral Value Prediction
This addresses the challenge of predicting implicit psychological variables in computational social science, though it is an incremental improvement for a specific domain.
The paper tackled the problem of detecting implicit moral values in tweets by automatically acquiring background knowledge from an external source to enrich input texts, achieving performance comparable to a human annotator.
In this paper, we address the problem of detecting expressions of moral values in tweets using content analysis. This is a particularly challenging problem because moral values are often only implicitly signaled in language, and tweets contain little contextual information due to length constraints. To address these obstacles, we present a novel approach to automatically acquire background knowledge from an external knowledge base to enrich input texts and thus improve moral value prediction. By combining basic text features with background knowledge, our overall context-aware framework achieves performance comparable to a single human annotator. To the best of our knowledge, this is the first attempt to incorporate background knowledge for the prediction of implicit psychological variables in the area of computational social science.