# Exploring methods for determining the appropriate number of topics in LDA: Focusing on perplexity and harmonic mean method

> Research article (Korean Society for Educational Evaluation, 2021) · cited 12× · AI/ML

**Wikidata**: [openalex:W3140133720](https://www.wikidata.org/wiki/openalex:W3140133720)  
**Source**: https://4ort.xyz/entity/exploring-methods-for-determining-the-appropriate-number-of-topics-in-lda-focusing-on-perplexity-and-harmonic-mean-metho