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data info file

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1<html>
2<head>
3<title>Boston Housing Data Base</title>
4</head>
5<body>
6<h1>Info on Boston Housing Data Base</h1>
7<pre>
81. Title: Boston Housing Data
9
102. Sources:
11   (a) Origin:  This dataset was taken from the StatLib library which is
12                maintained at Carnegie Mellon University.
13   (b) Creator:  Harrison, D. and Rubinfeld, D.L. 'Hedonic prices and the
14                 demand for clean air', J. Environ. Economics & Management,
15                 vol.5, 81-102, 1978.
16   (c) Date: July 7, 1993
17
183. Past Usage:
19   -   Used in Belsley, Kuh & Welsch, 'Regression diagnostics ...', Wiley,
20       1980.   N.B. Various transformations are used in the table on
21       pages 244-261.
22    -  Quinlan,R. (1993). Combining Instance-Based and Model-Based Learning.
23       In Proceedings on the Tenth International Conference of Machine
24       Learning, 236-243, University of Massachusetts, Amherst. Morgan
25       Kaufmann.
26
274. Relevant Information:
28
29   Concerns housing values in suburbs of Boston.
30
315. Number of Instances: 506
32
336. Number of Attributes: 13 continuous attributes (including "class"
34                         attribute "MEDV"), 1 binary-valued attribute.
35
367. Attribute Information:
37
38    1. CRIM      per capita crime rate by town
39    2. ZN        proportion of residential land zoned for lots over
40                 25,000 sq.ft.
41    3. INDUS     proportion of non-retail business acres per town
42    4. CHAS      Charles River dummy variable (= 1 if tract bounds
43                 river; 0 otherwise)
44    5. NOX       nitric oxides concentration (parts per 10 million)
45    6. RM        average number of rooms per dwelling
46    7. AGE       proportion of owner-occupied units built prior to 1940
47    8. DIS       weighted distances to five Boston employment centres
48    9. RAD       index of accessibility to radial highways
49    10. TAX      full-value property-tax rate per $10,000
50    11. PTRATIO  pupil-teacher ratio by town
51    12. B        1000(Bk - 0.63)^2 where Bk is the proportion of blacks
52                 by town
53    13. LSTAT    % lower status of the population
54    14. MEDV     Median value of owner-occupied homes in $1000's
55
568. Missing Attribute Values:  None.
57</pre>
58</body>
59</html>
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