The AcATaMa plugin was designed mainly with these keys goals:
To assess the accuracy of thematic maps
To estimate areas of the map classes (for example land cover and land change), according to Olofsson et al. (2013, 2014).
But nevertheless, you can use AcATaMa for many different uses (you can see some examples in use cases)).
The plugin allow to apply the methodology and main recommendations included (mainly) in these papers:
Olofsson, P., Herold, M., Stehman, S. V., Woodcock, C. E. & , M. A. Wulder. 2014. Good practices for estimating area and assessing accuracy of land change. Remote Sensing of Environment, 148:42–57. Link
Olofsson, P., Foody, G. M., Stehman, S. V. & C. E. Woodcock. 2013. Making better use of accuracy data in land change studies: Estimating accuracy and area and quantifying uncertainty using stratified estimation. Remote Sensing of Environment, 129:122–131. Link