WARNING: This database should be credited to the original owner whenever
         used for any publication whatsoever.

1. Title: Audiology Database

2. Sources:
    (a) Original Owner: Professor Jergen at Baylor College of Medicine
    (b) Donor: Bruce Porter (porter@fall.cs.utexas.EDU)
    (c) Date Received: 12/3/1987

3. Past Usage: 
   -- See: Bareiss, E. Ray, & Porter, Bruce (1987).  Protos: An Exemplar-Based
      Learning Apprentice.  In the Proceedings of the 4th International
      Workshop on Machine Learning, 12-23, Irvine, CA: Morgan Kaufmann.

4. Relevant Information:
   -- Contact Ray Bareiss (rbareiss@uunet.uucp ??), now at Vanderbilt 
      University, for more information.
   -- Domain expert: Professor Craig Wier of the University of Texas, Austin.

5. Number of instances: 200 training cases, 26 test cases

6. Number of attributes: ???

7. Attribute information: (all attributes are nominally valued)
   1. case identifier.
   2. classification (24 classes)
   3. List of case features
      -- format: form f(v) should be read as "feature f has value v"

8. Missing attribute values:
   -- This database does NOT use a standard set of attributes per instance.

9. Class Distribution: (in the training set)
    1. acoustic_neuroma: 1
    2. bells_palsy: 1
    3. cochlear_age: 46
    4. cochlear_age_and_noise: 18
    5. cochlear_age_plus_poss_menieres: 1
    6. cochlear_noise_and_heredity: 2
    7. cochlear_poss_noise: 16
    8. cochlear_unknown: 48
    9. conductive_discontinuity: 2
   10. conductive_fixation: 6
   11. mixed_cochlear_age_fixation: 1
   12. mixed_cochlear_age_otitis_media: 4
   13. mixed_cochlear_age_s_om: 2
   14. mixed_cochlear_unk_discontinuity: 2
   15. mixed_cochlear_unk_fixation: 5
   16. mixed_cochlear_unk_ser_om: 3
   17. mixed_poss_central_om: 1
   18. mixed_poss_noise_om: 2
   19. normal_ear: 20
   20. otitis_media: 4
   21. poss_central: 1
   22. possible_brainstem_disorder: 4
   23. possible_menieres: 8
   24. retrocochlear_unknown: 2
   --------------------Total: 200