# Info on Lymphography Data Base

    Citation Request:
       This lymphography domain was obtained from the University Medical Centre,
       Institute of Oncology, Ljubljana, Yugoslavia.  Thanks go to M. Zwitter and
       M. Soklic for providing the data.  Please include this citation if you plan
       to use this database.

    1. Title: Lymphography Domain

    2. Sources:
        (a) See Above.
        (b) Donors: Igor Kononenko,
                    University E.Kardelj
                    Faculty for electrical engineering
                    Trzaska 25
                    61000 Ljubljana (tel.: (38)(+61) 265-161

                    Bojan Cestnik
                    Jozef Stefan Institute
                    Jamova 39
                    61000 Ljubljana
                    Yugoslavia (tel.: (38)(+61) 214-399 ext.287)
       (c) Date: November 1988

    3. Past Usage: (sveral)
        1. 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: 76% accuracy
        2. Clark,P. & Niblett,T. (1987). Induction in Noisy Domains.  In
           I.Bratko & N.Lavrac (Eds.) Progress in Machine Learning, 11-30,
           Sigma Press.
           -- Simple Bayes: 83% accuracy
           -- CN2 (99% threshold): 82%
        3. Michalski,R., Mozetic,I. Hong,J., & Lavrac,N. (1986).  The Multi-Purpose
           Incremental Learning System AQ15 and its Testing Applications to Three
           Medical Domains.  In Proceedings of the Fifth National Conference on
           Artificial Intelligence, 1041-1045. Philadelphia, PA: Morgan Kaufmann.
           -- Experts: 85% accuracy (estimate)
           -- AQ15: 80-82%

    4. Relevant Information:
         This is one of three domains provided by the Oncology Institute
         that has repeatedly appeared in the machine learning literature.
         (See also breast-cancer and primary-tumor.)

    5. Number of Instances: 148

    6. Number of Attributes: 19 including the class attribute

    7. Attribute information:
        --- NOTE: All attribute values in the database have been entered as
                  numeric values corresponding to their index in the list
                  of attribute values for that attribute domain as given below.
        1. class: normal find, metastases, malign lymph, fibrosis
        2. lymphatics: normal, arched, deformed, displaced
        3. block of affere: no, yes
        4. bl. of lymph. c: no, yes
        5. bl. of lymph. s: no, yes
        6. by pass: no, yes
        7. extravasates: no, yes
        8. regeneration of: no, yes
        9. early uptake in: no, yes
       10. lym.nodes dimin: 0-3
       11. lym.nodes enlar: 1-4
       12. changes in lym.: bean, oval, round
       13. defect in node: no, lacunar, lac. marginal, lac. central
       14. changes in node: no, lacunar, lac. margin, lac. central
       15. changes in stru: no, grainy, drop-like, coarse, diluted, reticular,
                            stripped, faint,
       16. special forms: no, chalices, vesicles
       17. dislocation of: no, yes
       18. exclusion of no: no, yes
       19. no. of nodes in: 0-9, 10-19, 20-29, 30-39, 40-49, 50-59, 60-69, >=70

    8. Missing Attribute Values: None

    9. Class Distribution:
        Class:        Number of Instances:
        normal find:  2
        metastases:   81
        malign lymph: 61
        fibrosis:     4