openml-datasets

The resources for this dataset can be found at https://www.openml.org/d/2

Author: Unknown. Donated by David Sterling and Wray Buntine
Source: UCI - 1990
Please cite: UCI

The original Annealing dataset from UCI. The exact meaning of the features and classes is largely unknown. Annealing, in metallurgy and materials science, is a heat treatment that alters the physical and sometimes chemical properties of a material to increase its ductility and reduce its hardness, making it more workable. It involves heating a material to above its recrystallization temperature, maintaining a suitable temperature, and then cooling. (Wikipedia)

Attribute Information:

1. family: –,GB,GK,GS,TN,ZA,ZF,ZH,ZM,ZS
2. product-type: C, H, G
3. steel: -,R,A,U,K,M,S,W,V
4. carbon: continuous
5. hardness: continuous
6. temper_rolling: -,T
7. condition: -,S,A,X
8. formability: -,1,2,3,4,5
9. strength: continuous
10. non-ageing: -,N
11. surface-finish: P,M,-
12. surface-quality: -,D,E,F,G
13. enamelability: -,1,2,3,4,5
14. bc: Y,-
15. bf: Y,-
16. bt: Y,-
17. bw/me: B,M,-
18. bl: Y,-
19. m: Y,-
20. chrom: C,-
21. phos: P,-
22. cbond: Y,-
23. marvi: Y,-
24. exptl: Y,-
25. ferro: Y,-
26. corr: Y,-
27. blue/bright/varn/clean: B,R,V,C,-
28. lustre: Y,-
29. jurofm: Y,-
30. s: Y,-
31. p: Y,-
32. shape: COIL, SHEET
33. thick: continuous
34. width: continuous
35. len: continuous
36. oil: -,Y,N
37. bore: 0000,0500,0600,0760
38. packing: -,1,2,3 classes: 1,2,3,4,5,U

– The '-' values are actually 'not_applicable' values rather than 'missing_values' (and so can be treated as legal discrete values rather than as showing the absence of a discrete value).