# Dimensionality reduction in automated evaluation of descriptive answers through zero variance, near zero variance and non frequent words techniques - a comparison

> Research article (2015 IEEE 9th International Conference on Intelligent Systems and Control (ISCO), 2015) · cited 10× · AI/ML

**Wikidata**: [openalex:W1635215334](https://www.wikidata.org/wiki/openalex:W1635215334)  
**Source**: https://4ort.xyz/entity/dimensionality-reduction-in-automated-evaluation-of-descriptive-answers-through-zero-variance-near-zero-variance-and-non