diagnosis of skin diseases; use of expert systems

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For the accurate diagnosis of skin disorders, not only clinical photographs, but also other medical histories are important. However, to standardize and preprocess the clinical information is too complex. I made an experimental demo which consists of four neural network modules (disease classifier, fine image selector, malignancy predictor using age/gender, and age/gender predictor). The demo application also use a classic expert system which have interactive decision trees. I assume that several disorders can be ruled out by asking some questions.