# Info on 1984 United States Congressional Voting Records Data Base

    1. Title: 1984 United States Congressional Voting Records Database

    2. Source Information:
        (a) Source:  Congressional Quarterly Almanac, 98th Congress,
                     2nd session 1984, Volume XL: Congressional Quarterly Inc.
                     Washington, D.C., 1985.
        (b) Donor: Jeff Schlimmer (Jeffrey.Schlimmer@a.gp.cs.cmu.edu)
        (c) Date: 27 April 1987

    3. Past Usage
       - Publications
         1. Schlimmer, J. C. (1987).  Concept acquisition through
            representational adjustment.  Doctoral dissertation, Department of
            Information and Computer Science, University of California, Irvine, CA.
            -- Results: about 90%-95% accuracy appears to be STAGGER's asymptote
         - Predicted attribute: party affiliation (2 classes)

    4. Relevant Information:
          This data set includes votes for each of the U.S. House of
          Representatives Congressmen on the 16 key votes identified by the
          CQA.  The CQA lists nine different types of votes: voted for, paired
          for, and announced for (these three simplified to yea), voted
          against, paired against, and announced against (these three
          simplified to nay), voted present, voted present to avoid conflict
          of interest, and did not vote or otherwise make a position known
          (these three simplified to an unknown disposition).

    5. Number of Instances: 435 (267 democrats, 168 republicans)

    6. Number of Attributes: 16 + class name = 17 (all Boolean valued)

    7. Attribute Information:
       1. Class Name: 2 (democrat, republican)
       2. handicapped-infants: 2 (y,n)
       3. water-project-cost-sharing: 2 (y,n)
       4. adoption-of-the-budget-resolution: 2 (y,n)
       5. physician-fee-freeze: 2 (y,n)
       6. el-salvador-aid: 2 (y,n)
       7. religious-groups-in-schools: 2 (y,n)
       8. anti-satellite-test-ban: 2 (y,n)
       9. aid-to-nicaraguan-contras: 2 (y,n)
      10. mx-missile: 2 (y,n)
      11. immigration: 2 (y,n)
      12. synfuels-corporation-cutback: 2 (y,n)
      13. education-spending: 2 (y,n)
      14. superfund-right-to-sue: 2 (y,n)
      15. crime: 2 (y,n)
      16. duty-free-exports: 2 (y,n)
      17. export-administration-act-south-africa: 2 (y,n)

    8. Missing Attribute Values: Denoted by "?"

       NOTE: It is important to recognize that "?" in this database does
             not mean that the value of the attribute is unknown.  It
             means simply, that the value is not "yea" or "nay" (see
             "Relevant Information" section above).

       Attribute:  #Missing Values:
               1:  0
               2:  0
               3:  12
               4:  48
               5:  11
               6:  11
               7:  15
               8:  11
               9:  14
              10:  15
              11:  22
              12:  7
              13:  21
              14:  31
              15:  25
              16:  17
              17:  28

    9. Class Distribution: (2 classes)
       1. 45.2 percent are democrat
       2. 54.8 percent are republican

    Class predictiveness and predictability: Pr(C|A=V) and Pr(A=V|C)
     Attribute 1: (A = handicapped-infants)
      0.91;  1.21  (C=democrat; V=y)
      0.09;  0.10  (C=republican; V=y)
      0.43;  0.38  (C=democrat; V=n)
      0.57;  0.41  (C=republican; V=n)
      0.75;  0.03  (C=democrat; V=?)
      0.25;  0.01  (C=republican; V=?)
     Attribute 2: (A = water-project-cost-sharing)
      0.62;  0.45  (C=democrat; V=y)
      0.38;  0.23  (C=republican; V=y)
      0.62;  0.45  (C=democrat; V=n)
      0.38;  0.23  (C=republican; V=n)
      0.58;  0.10  (C=democrat; V=?)
      0.42;  0.06  (C=republican; V=?)
     Attribute 3: (A = adoption-of-the-budget-resolution)
      0.91;  0.87  (C=democrat; V=y)
      0.09;  0.07  (C=republican; V=y)
      0.17;  0.11  (C=democrat; V=n)
      0.83;  0.44  (C=republican; V=n)
      0.64;  0.03  (C=democrat; V=?)
      0.36;  0.01  (C=republican; V=?)
     Attribute 4: (A = physician-fee-freeze)
      0.08;  0.05  (C=democrat; V=y)
      0.92;  0.50  (C=republican; V=y)
      0.99;  0.92  (C=democrat; V=n)
      0.01;  0.01  (C=republican; V=n)
      0.73;  0.03  (C=democrat; V=?)
      0.27;  0.01  (C=republican; V=?)
     Attribute 5: (A = el-salvador-aid)
      0.26;  0.21  (C=democrat; V=y)
      0.74;  0.48  (C=republican; V=y)
      0.96;  0.75  (C=democrat; V=n)
      0.04;  0.02  (C=republican; V=n)
      0.80;  0.04  (C=democrat; V=?)
      0.20;  0.01  (C=republican; V=?)
     Attribute 6: (A = religious-groups-in-schools)
      0.45;  0.46  (C=democrat; V=y)
      0.55;  0.46  (C=republican; V=y)
      0.89;  0.51  (C=democrat; V=n)
      0.11;  0.05  (C=republican; V=n)
      0.82;  0.03  (C=democrat; V=?)
      0.18;  0.01  (C=republican; V=?)
     Attribute 7: (A = anti-satellite-test-ban)
      0.84;  0.75  (C=democrat; V=y)
      0.16;  0.12  (C=republican; V=y)
      0.32;  0.22  (C=democrat; V=n)
      0.68;  0.38  (C=republican; V=n)
      0.57;  0.03  (C=democrat; V=?)
      0.43;  0.02  (C=republican; V=?)
     Attribute 8: (A = aid-to-nicaraguan-contras)
      0.90;  0.82  (C=democrat; V=y)
      0.10;  0.07  (C=republican; V=y)
      0.25;  0.17  (C=democrat; V=n)
      0.75;  0.41  (C=republican; V=n)
      0.27;  0.01  (C=democrat; V=?)
      0.73;  0.03  (C=republican; V=?)
     Attribute 9: (A = mx-missile)
      0.91;  0.70  (C=democrat; V=y)
      0.09;  0.06  (C=republican; V=y)
      0.29;  0.22  (C=democrat; V=n)
      0.71;  0.45  (C=republican; V=n)
      0.86;  0.07  (C=democrat; V=?)
      0.14;  0.01  (C=republican; V=?)
     Attribute 10: (A = immigration)
      0.57;  0.46  (C=democrat; V=y)
      0.43;  0.28  (C=republican; V=y)
      0.66;  0.52  (C=democrat; V=n)
      0.34;  0.23  (C=republican; V=n)
      0.57;  0.01  (C=democrat; V=?)
      0.43;  0.01  (C=republican; V=?)
     Attribute 11: (A = synfuels-corporation-cutback)
      0.86;  0.48  (C=democrat; V=y)
      0.14;  0.06  (C=republican; V=y)
      0.48;  0.47  (C=democrat; V=n)
      0.52;  0.43  (C=republican; V=n)
      0.57;  0.04  (C=democrat; V=?)
      0.43;  0.03  (C=republican; V=?)
     Attribute 12: (A = education-spending)
      0.21;  0.13  (C=democrat; V=y)
      0.79;  0.42  (C=republican; V=y)
      0.91;  0.80  (C=democrat; V=n)
      0.09;  0.06  (C=republican; V=n)
      0.58;  0.07  (C=democrat; V=?)
      0.42;  0.04  (C=republican; V=?)
     Attribute 13: (A = superfund-right-to-sue)
      0.35;  0.27  (C=democrat; V=y)
      0.65;  0.42  (C=republican; V=y)
      0.89;  0.67  (C=democrat; V=n)
      0.11;  0.07  (C=republican; V=n)
      0.60;  0.06  (C=democrat; V=?)
      0.40;  0.03  (C=republican; V=?)
     Attribute 14: (A = crime)
      0.36;  0.34  (C=democrat; V=y)
      0.64;  0.49  (C=republican; V=y)
      0.98;  0.63  (C=democrat; V=n)
      0.02;  0.01  (C=republican; V=n)
      0.59;  0.04  (C=democrat; V=?)
      0.41;  0.02  (C=republican; V=?)
     Attribute 15: (A = duty-free-exports)
      0.92;  0.60  (C=democrat; V=y)
      0.08;  0.04  (C=republican; V=y)
      0.39;  0.34  (C=democrat; V=n)
      0.61;  0.44  (C=republican; V=n)
      0.57;  0.06  (C=democrat; V=?)
      0.43;  0.04  (C=republican; V=?)
     Attribute 16: (A = export-administration-act-south-africa)
      0.64;  0.65  (C=democrat; V=y)
      0.36;  0.30  (C=republican; V=y)
      0.19;  0.04  (C=democrat; V=n)
      0.81;  0.15  (C=republican; V=n)
      0.79;  0.31  (C=democrat; V=?)
      0.21;  0.07  (C=republican; V=?)