| Subject | English | Portuguese |
| environ. | unsupervised image classification | classificação de imagens não supervisionada |
| environ. | unsupervised image classification | classificação não controlada de imagens |
| environ. | unsupervised image classification Unsupervised classification is a kind of classification which takes place with minimum input from the operator; no training sample is available and subdivision of the feature space is achieved by identifying natural groupings of the measurement vectors | classificação de imagens |
| IT | unsupervised learning | aprendizagem por observação |
| transp., avia. | unsupervised line flying | voos de linha não supervisados |