EXPLANATORY VARIABLES
---------------------

| 48 continuous real [0,100] attributes of type word_freq_WORD = percentage
| of words in the e-mail that match WORD, i.e. 100 * (number of times the
| WORD appears in the e-mail) / total number of words in e-mail.  A "word"
| in this case is any string of alphanumeric characters bounded by
| non-alphanumeric characters or end-of-string.

01 word_freq_make:         continuous.
02 word_freq_address:      continuous.
03 word_freq_all:          continuous.
04 word_freq_3d:           continuous.
05 word_freq_our:          continuous.
06 word_freq_over:         continuous.
07 word_freq_remove:       continuous.
08 word_freq_internet:     continuous.
09 word_freq_order:        continuous.
10 word_freq_mail:         continuous.
11 word_freq_receive:      continuous.
12 word_freq_will:         continuous.
13 word_freq_people:       continuous.
14 word_freq_report:       continuous.
15 word_freq_addresses:    continuous.
16 word_freq_free:         continuous.
17 word_freq_business:     continuous.
18 word_freq_email:        continuous.
19 word_freq_you:          continuous.
20 word_freq_credit:       continuous.
21 word_freq_your:         continuous.
22 word_freq_font:         continuous.
23 word_freq_000:          continuous.
24 word_freq_money:        continuous.
25 word_freq_hp:           continuous.
26 word_freq_hpl:          continuous.
27 word_freq_george:       continuous.
28 word_freq_650:          continuous.
29 word_freq_lab:          continuous.
30 word_freq_labs:         continuous.
31 word_freq_telnet:       continuous.
32 word_freq_857:          continuous.
33 word_freq_data:         continuous.
34 word_freq_415:          continuous.
35 word_freq_85:           continuous.
36 word_freq_technology:   continuous.
37 word_freq_1999:         continuous.
38 word_freq_parts:        continuous.
39 word_freq_pm:           continuous.
40 word_freq_direct:       continuous.
41 word_freq_cs:           continuous.
42 word_freq_meeting:      continuous.
43 word_freq_original:     continuous.
44 word_freq_project:      continuous.
45 word_freq_re:           continuous.
46 word_freq_edu:          continuous.
47 word_freq_table:        continuous.
48 word_freq_conference:   continuous.


| 6 continuous real [0,100] attributes of type char_freq_CHAR = percentage
| of characters in the e-mail that match CHAR, i.e. 100 * (number of CHAR
| occurences) / total characters in e-mail

49 char_freq_;:            continuous.
50 char_freq_(:            continuous.
51 char_freq_[:            continuous.
52 char_freq_!:            continuous.
53 char_freq_$:            continuous.
54 char_freq_#:            continuous.


| 1 continuous real [1,...] attribute of type capital_run_length_average
| = average length of uninterrupted sequences of capital letters

55 capital_run_length_average: continuous.


| 1 continuous integer [1,...] attribute of type capital_run_length_longest
| = length of longest uninterrupted sequence of capital letters

56 capital_run_length_longest: continuous.


| 1 continuous integer [1,...] attribute of type capital_run_length_total =
| sum of length of uninterrupted sequences of capital letters = total
| number of capital letters in the e-mail

57 capital_run_length_total:   continuous.




RESPONSE VARIABLE
-----------------

| 1 nominal {0,1} class attribute of type spam = denotes whether the e-mail
| was considered spam (1) or not (0), i.e. unsolicited commercial e-mail.