Learning systems 2 Benchmarking 1 Comprehensive analysis 1 Content based retrieval 1 Content-Based Image Retrieval 1 Decision trees 1 Diagnosis 1 Dimensionality reduction 1 Education computing 1 Educational institutions 1 Forecasting 1 Green computing 1 Image processing 1 K nearest neighbor (KNN) 1 Key performance indicators 1 Learning algorithms 1 Logistic regression 1 Low-level features 1 Machine learning 1 Machine learning techniques 1 Mammogram images 1 Medical domains 1 Medical imaging 1 Multiclass prediction 1 Nearest neighbor search 1 Prediction performance 1 Predictive analytics 1 Random forests 1 Relevance feedback 1 Semantic gap 1