Detection of seizure activity in EEG by an artificial neural network: a preliminary study
Computers and Biomedical Research
Self-Organizing Maps
Data Mining: Concepts and Techniques
Data Mining: Concepts and Techniques
Some studies on fuzzy clustering of psychosis data
International Journal of Business Intelligence and Data Mining
Developing fuzzy classifiers to predict the chance of occurrence of adult psychoses
Knowledge-Based Systems
WSEAS Transactions on Information Science and Applications
Entropies for detection of epilepsy in EEG
Computer Methods and Programs in Biomedicine
Fuzzy-logic-based screening and prediction of adult psychoses: a novel approach
IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans
Adaptive Neuro-fuzzy Inference System for Classification of EEG Signals Using Fractal Dimension
EMS '09 Proceedings of the 2009 Third UKSim European Symposium on Computer Modeling and Simulation
Automatic detection of ophthalmic artery stenosis using the adaptive neuro-fuzzy inference system
Engineering Applications of Artificial Intelligence
An investigation of neuro-fuzzy systems in psychosomatic disorders
Expert Systems with Applications: An International Journal
Statistical modeling of psychosis data
Computer Methods and Programs in Biomedicine
An Automated System to Diagnose the Severity of Adult Depression
EAIT '11 Proceedings of the 2011 Second International Conference on Emerging Applications of Information Technology
Artificial Intelligence in Medicine
Application of a fuzzy discrimination analysis for diagnosis of valvular heart disease
IEEE Transactions on Fuzzy Systems
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Depression is a common but worrying psychological disorder that adversely affects one's quality of life. It is more ominous to note that its incidence is increasing. On the other hand, screening and grading of depression is still a manual and time consuming process that might be biased. In addition, grades of depression are often determined in continuous ranges, e.g., `mild to moderate' and `moderate to severe' instead of making them more discrete as `mild', `moderate', and `severe'. Grading as a continuous range is confusing to the doctors and thus affecting the management plan at large. Given this practical issue, the present paper attempts to differentiate depression grades more accurately using two neural net learning approaches--`supervised', i.e., classification with Back propagation neural network (BPNN) and Adaptive Network-based Fuzzy Inference System (ANFIS) classifiers, and `unsupervised', i.e., `clustering' technique with Self-organizing map (SOM), built in MATLAB 7. The reason for using the supervised and unsupervised learning approaches is that, supervised learning depends exclusively on domain knowledge. Supervision may induce biasness and subjectivities related to the decision-making. Finally, the performance of BPNN and ANFIS are compared and discussed. It was observed that ANFIS, being a hybrid system, performed much better compared to the BPNN classifier. On the other hand, SOM-based clustering technique is also found useful in constructing three distinct clusters. It also assists visualizing the multidimensional data clusters into 2-D.