Dermatology data set 1: Description. The differential diagnosis of erythemato-squamous diseases is a real problem in dermatology. Patients were first evaluated clinically with 12 features. Afterwards, skin samples were taken for the evaluation of 22 histopathological features. In the dataset constructed for this domain, the family history feature has the value 1 if any of these diseases has been observed in the family, and 0 otherwise. The age feature simply represents the age of the patient. Every other feature (clinical and histopathological) was given a degree in the range of 0 to 3. Here, 0 indicates that the feature was not present, 3 indicates the largest amount possible, and 1, 2 indicate the relative intermediate values. 2: Type. Classification 3: Origin. Real world 4: Instances. 358 (366) 5: Features. 34 6: Classes. 6 7: Missing values. Yes 8: Header. @relation dermatology @attribute Erythema integer[0,3] @attribute Scaling integer[0,3] @attribute Definite_borders integer[0,3] @attribute Itching integer[0,3] @attribute Koebner_phenomenon integer[0,3] @attribute Polygonal_papules integer[0,3] @attribute Follicular_papules integer[0,3] @attribute Oral_mucosal integer[0,3] @attribute Knee_and_elbow integer[0,3] @attribute Scalp_involvement integer[0,3] @attribute Family_history integer[0,1] @attribute Melanin_incontinence integer[0,3] @attribute Eosinophils integer[0,2] @attribute PNL_infiltrate integer[0,3] @attribute Fibrosis integer[0,3] @attribute Exocytosis integer[0,3] @attribute Acanthosis integer[0,3] @attribute Hyperkeratosis integer[0,3] @attribute Parakeratosis integer[0,3] @attribute Clubbing integer[0,3] @attribute Elongation integer[0,3] @attribute Thinning integer[0,3] @attribute Spongiform_pustule integer[0,3] @attribute Munro_microabcess integer[0,3] @attribute Focal_hypergranulosis integer[0,3] @attribute Granular_layer integer[0,3] @attribute Vacuolisation integer[0,3] @attribute Spongiosis integer[0,3] @attribute Saw-tooth_appearance integer[0,3] @attribute Follicular_horn_plug integer[0,3] @attribute Perifollicular_parakeratosis integer[0,3] @attribute Inflammatory_monoluclear integer[0,3] @attribute Band-like_infiltrate integer[0,3] @attribute Age integer[0,75] @attribute Class {1,2,3,4,5,6} @inputs Erythema, Scaling, Definite_borders, Itching, Koebner_phenomenon, Polygonal_papules, Follicular_papules, Oral_mucosal, Knee_and_elbow, Scalp_involvement, Family_history, Melanin_incontinence, Eosinophils, PNL_infiltrate, Fibrosis, Exocytosis, Acanthosis, Hyperkeratosis, Parakeratosis, Clubbing, Elongation, Thinning, Spongiform_pustule, Munro_microabcess, Focal_hypergranulosis, Granular_layer, Vacuolisation, Spongiosis, Saw-tooth_appearance, Follicular_horn_plug, Perifollicular_parakeratosis, Inflammatory_monoluclear, Band-like_infiltrate, Age @output Class