| Converted to machine-readable form by Brian Frasca (6/13/94).
|
| 1. Title: Hepatitis Domain
|
| 2. Sources:
|      (a) unknown
|      (b) Donor: G.Gong  (Carnegie-Mellon University) via 
|                    Bojan Cestnik
|                    Jozef Stefan Institute
|                    Jamova 39
|                    61000 Ljubljana
|                    Yugoslavia (tel.: (38)(+61) 214-399 ext.287) }
|      (c) Date: November, 1988
| 
| 3. Past Usage:
|     1. Diaconis,P. & Efron,B. (1983).  Computer-Intensive Methods in 
|        Statistics.  Scientific American, Volume 248.
|        -- Gail Gong reported a 80% classfication accuracy
|     2. Cestnik,G., Konenenko,I, & Bratko,I. (1987). Assistant-86: A
|        Knowledge-Elicitation Tool for Sophisticated Users.  In I.Bratko
|        & N.Lavrac (Eds.) Progress in Machine Learning, 31-45, Sigma Press.
|        -- Assistant-86: 83% accuracy
| 
| 4. Relevant Information:
|     Please ask Gail Gong for further information on this database.
| 
| 5. Number of Instances: 155
| 
| 6. Number of Attributes: 20 (including the class attribute)
| 
| 7. Attribute information: 
|      1. Class: DIE, LIVE
|      2. AGE: 10, 20, 30, 40, 50, 60, 70, 80
|      3. SEX: male, female
|      4. STEROID: no, yes
|      5. ANTIVIRALS: no, yes
|      6. FATIGUE: no, yes
|      7. MALAISE: no, yes
|      8. ANOREXIA: no, yes
|      9. LIVER BIG: no, yes
|     10. LIVER FIRM: no, yes
|     11. SPLEEN PALPABLE: no, yes
|     12. SPIDERS: no, yes
|     13. ASCITES: no, yes
|     14. VARICES: no, yes
|     15. BILIRUBIN: 0.39, 0.80, 1.20, 2.00, 3.00, 4.00
|         -- see the note below
|     16. ALK PHOSPHATE: 33, 80, 120, 160, 200, 250
|     17. SGOT: 13, 100, 200, 300, 400, 500, 
|     18. ALBUMIN: 2.1, 3.0, 3.8, 4.5, 5.0, 6.0
|     19. PROTIME: 10, 20, 30, 40, 50, 60, 70, 80, 90
|     20. HISTOLOGY: no, yes
| 
|     The BILIRUBIN attribute appears to be continuously-valued.  I checked
|     this with the donater, Bojan Cestnik, who replied:
| 
|       About the hepatitis database and BILIRUBIN problem I would like to say
|       the following: BILIRUBIN is continuous attribute (= the number of it's
|       "values" in the ASDOHEPA.DAT file is negative!!!); "values" are quoted
|       because when speaking about the continuous attribute there is no such 
|       thing as all possible values. However, they represent so called
|       "boundary" values; according to these "boundary" values the attribute
|       can be discretized. At the same time, because of the continious
|       attribute, one can perform some other test since the continuous
|       information is preserved. I hope that these lines have at least roughly 
|       answered your question. 
| 
| 8. Missing Attribute Values: (indicated by "?")
|      Attribute Number:    Number of Missing Values:
|                     1:    0
|                     2:    0
|                     3:    0
|                     4:    1
|                     5:    0
|                     6:    1
|                     7:    1
|                     8:    1
|                     9:    10
| 		   10:    11
| 		   11:    5
| 		   12:    5
| 		   13:    5
| 		   14:    5
| 		   15:    6
| 		   16:    29
| 		   17:    4
| 		   18:    16
| 		   19:    67
| 		   20:    0
| 
| 9. Class Distribution:
|      DIE: 32
|     LIVE: 123

1, 2.			| DIE, LIVE.

AGE: continuous
SEX: 1, 2		| male, female
STEROID: 1, 2		| no, yes
ANTIVIRALS: 1, 2	| no, yes
FATIGUE: 1, 2		| no, yes
MALAISE: 1, 2		| no, yes
ANOREXIA: 1, 2		| no, yes
LIVER BIG: 1, 2		| no, yes
LIVER FIRM: 1, 2	| no, yes
SPLEEN PALPABLE: 1, 2	| no, yes
SPIDERS: 1, 2		| no, yes
ASCITES: 1, 2		| no, yes
VARICES: 1, 2		| no, yes
BILIRUBIN: continuous
ALK PHOSPHATE: continuous
SGOT: continuous
ALBUMIN: continuous
PROTIME: continuous
HISTOLOGY: 1, 2		| no, yes