Glass Identification data set 1: Description. From USA Forensic Science Service; 6 types of glass which can be found in the crime scene, defined in terms of their oxide content (i.e. Na, Fe, K, etc). 2: Type. Classification 3: Origin. Real world 4: Instances. 214 5: Features. 9 6: Classes. 7 7: Missing values. No 8: Header. @relation glass @attribute RI real [1.51115, 1.53393] @attribute Na real [10.73, 17.38] @attribute Mg real [0.0, 4.49] @attribute Al real [0.29, 3.5] @attribute Si real [69.81, 75.41] @attribute K real [0.0, 6.21] @attribute Ca real [5.43, 16.19] @attribute Ba real [0.0, 3.15] @attribute Fe real [0.0, 0.51] @attribute TypeGlass {1, 2, 3, 4, 5, 6, 7} @inputs RI, Na, Mg, Al, Si, K, Ca, Ba, Fe @outputs TypeGlass