# An Unsupervised Classification Method for Flame Image of Pulverized Coal Combustion Based on Convolutional Auto-Encoder and Hidden Markov Model

> Research article (Energies, 2019) · cited 50× · AI/ML

**Wikidata**: [openalex:W2954302747](https://www.wikidata.org/wiki/openalex:W2954302747)  
**Source**: https://4ort.xyz/entity/an-unsupervised-classification-method-for-flame-image-of-pulverized-coal-combustion-based-on-convolutional-auto-encoder-