12.2 Topic models
- Topic models…
- …may provide classifications that are hard to interpret (especially topic models)
- Remember that we have to label the categories/topics ourselves
- …may provide classifications that are hard to interpret (especially topic models)
- Project: Measuring trust (Landesvatter & Bauer)
- Aim: Classify short open-ended responses
- “Simple” topic models (LDA, STM) did not yield satisfying results, hence, need to resort to supervised classification
- Random forests (part of tree-based methods) turned out to be a viable way