<oml:data_set_description xmlns:oml="http://openml.org/openml">
  <oml:id>1</oml:id>
  <oml:name>anneal</oml:name>
  <oml:version>2</oml:version>
  <oml:description>**Author**: donated by David Sterling and Wray Buntine  
**Source**: [original (UCI)](http://www.openml.org/d/2) -   
**Please cite**:   

This is a preprocessed version of the &lt;a href=&quot;d/2&quot;&gt;anneal&lt;/a&gt; dataset (version 1). All missing values are treated as a nominal value with label '?'. (Quotes for clarity). Because this is not good practice, this dataset is deactivated. Use version 1 instead

1. Title of Database: Annealing Data
 
 2. Source Information: donated by David Sterling and Wray Buntine.
 
 3. Past Usage: unknown
 
 4. Relevant Information:
    -- Explanation: I suspect this was left by Ross Quinlan in 1987 at the
       4th Machine Learning Workshop.  I'd have to check with Jeff Schlimmer
       to double check this.
 
 5. Number of Instances: 898
 
 6. Number of Attributes: 38
    -- 6 continuously-valued
    -- 3 integer-valued
    -- 29 nominal-valued
 
 7. 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).
 
 8. Missing Attribute Values: Signified with &quot;?&quot;
    Attribute:  Number of instances missing its value:
    1           0
    2           0
    3           70
    4           0
    5           0
    6           675
    7           271
    8           283
    9           0
   10           703
   11           790
   12           217
   13           785
   14           797
   15           680
   16           736
   17           609
   18           662
   19           798
   20           775
   21           791
   22           730
   23           798
   24           796
   25           772
   26           798
   27           793
   28           753
   29           798
   30           798
   31           798
   32           0
   33           0
   34           0
   35           0
   36           740
   37           0
   38           789
   39           0
 
 9. Distribution of Classes
      Class Name:   Number of Instances:
      1               8
      2              88
      3             608
      4               0
      5              60
      U              34
                    ---
                    798</oml:description>
  <oml:description_version>1</oml:description_version>
  <oml:format>ARFF</oml:format>
        <oml:upload_date>2014-04-06T23:19:20</oml:upload_date>
    <oml:licence>Public</oml:licence>  <oml:url>https://openml.org/data/v1/download/1/anneal.arff</oml:url>
  <oml:parquet_url>https://data.openml.org/datasets/0000/0001/dataset_1.pq</oml:parquet_url>  <oml:file_id>1</oml:file_id>  <oml:default_target_attribute>class</oml:default_target_attribute>      <oml:version_label>2</oml:version_label>    <oml:tag>chemical</oml:tag><oml:tag>study_41</oml:tag><oml:tag>study_7</oml:tag><oml:tag>uci</oml:tag>  <oml:visibility>public</oml:visibility>  <oml:original_data_url>http://www.openml.org/d/2</oml:original_data_url>      <oml:status>deactivated</oml:status>
  <oml:processing_date>2020-11-20 19:54:09</oml:processing_date>      <oml:md5_checksum>43b29a3eb09e8fac9a8525c3c83abec8</oml:md5_checksum>
</oml:data_set_description>