Ensemble Classification of Grants using LDA-based Features
Yannis Korkontzelos, Beverley Thomas, Makoto Miwa, Sophia Ananiadou
Abstract
Classifying research grants into useful categories is a vital task for a funding body to give structure to the portfolio for analysis, informing strategic planning and decision-making. Automating this classification process would save time and effort, providing the accuracy of the classifications is maintained. We employ five classification models to classify a set of BBSRC-funded research grants in 21 research topics based on unigrams, technical terms and Latent Dirichlet Allocation models. To boost precision, we investigate methods for combining their predictions into five aggregate classifiers. Evaluation confirmed that ensemble classification models lead to higher precision. It was observed that there is not a single best-performing aggregate method for all research topics. Instead, the best-performing method for a research topic depends on the number of positive training instances available for this topic. Subject matter experts considered the predictions of aggregate models to correct erroneous or incomplete manual assignments.- Anthology ID:
- L16-1205
- Volume:
- Proceedings of the Tenth International Conference on Language Resources and Evaluation (LREC'16)
- Month:
- May
- Year:
- 2016
- Address:
- Portorož, Slovenia
- Editors:
- Nicoletta Calzolari, Khalid Choukri, Thierry Declerck, Sara Goggi, Marko Grobelnik, Bente Maegaard, Joseph Mariani, Helene Mazo, Asuncion Moreno, Jan Odijk, Stelios Piperidis
- Venue:
- LREC
- SIG:
- Publisher:
- European Language Resources Association (ELRA)
- Note:
- Pages:
- 1288–1294
- Language:
- URL:
- https://aclanthology.org/L16-1205
- DOI:
- Cite (ACL):
- Yannis Korkontzelos, Beverley Thomas, Makoto Miwa, and Sophia Ananiadou. 2016. Ensemble Classification of Grants using LDA-based Features. In Proceedings of the Tenth International Conference on Language Resources and Evaluation (LREC'16), pages 1288–1294, Portorož, Slovenia. European Language Resources Association (ELRA).
- Cite (Informal):
- Ensemble Classification of Grants using LDA-based Features (Korkontzelos et al., LREC 2016)
- PDF:
- https://preview.aclanthology.org/emnlp-22-attachments/L16-1205.pdf