Aortic regurgitation can eventually lead to heart failure. Mitral regurgitation may also require a valve replacement. In this condition, the mitral valve allows oxygenated blood to flow backwards into the lungs instead of continuing through the heart as it should. People with this condition may experience shortness of breath, irregular heartbeats and chest pain.
A training program is composed of a schedule of activi-. ties with training goals, learning objectives, subject areas, methods, trainers, trainees, methods of assessment, and. locations. A good training program is designed to address. performance problems, such as long delays in getting medi-. cines from suppliers to the main stores, delays in distribut-. ing medicines from midlevel stores to end-user units, or. Performance.
In many areas of information science, finding predictive relationships from data is a very important task. Initial discovery of relationships is usually done with a training set while a test set and validation set are used for evaluating whether the discovered relationships hold. More formally, a training set is a set of data used to discover potentially predictive relationships. A test set is a set of data used to assess the strength and utility of a predictive relationship. Test and training sets are used in intelligent systems, machine learning, genetic programming and statistics.