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https://issues.apache.org/jira/browse/MAHOUT-857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13141321#comment-13141321
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Grant Ingersoll commented on MAHOUT-857:
----------------------------------------
Here's the conf. matrix I'm getting, which clearly points to some idiocy on my
part:
{quote}
7532 test files
=======================================================
Summary
-------------------------------------------------------
Correctly Classified Instances : 374 4.9655%
Incorrectly Classified Instances : 7158 95.0345%
Total Classified Instances : 7532
=======================================================
Confusion Matrix
-------------------------------------------------------
a b c d e f g h i j
k l m n o p q r s t
u <--Classified as
123 0 1 1 1 2 6 19 2 2
5 23 27 8 53 3 14 17 12 0
0 | 319 a = alt.atheism
55 16 28 14 80 24 3 8 4 3
8 86 27 28 0 2 3 0 0 0
0 | 389 b = comp.graphics
38 171 57 14 49 5 3 6 2 4
3 25 7 6 1 1 0 2 0 0
0 | 394 c = comp.os.ms-windows.misc
10 14 237 18 17 15 2 7 4 0
2 54 7 4 0 0 0 1 0 0
0 | 392 d = comp.sys.ibm.pc.hardware
20 10 55 159 17 20 7 11 5 0
1 63 13 2 0 1 0 1 0 0
0 | 385 e = comp.sys.mac.hardware
11 25 5 0 306 13 3 1 0 5
2 13 5 6 0 0 0 0 0 0
0 | 395 f = comp.windows.x
2 1 23 14 6 310 1 3 3 1
1 10 6 5 0 3 0 1 0 0
0 | 390 g = misc.forsale
8 1 6 2 9 11 270 15 10 3
3 37 11 4 0 2 0 4 0 0
0 | 396 h = rec.autos
7 0 1 1 8 6 14 326 1 0
1 12 17 3 1 0 0 0 0 0
0 | 398 i = rec.motorcycles
17 1 2 1 2 5 2 7 295 26
1 16 12 2 0 2 3 3 0 0
0 | 397 j = rec.sport.baseball
6 1 0 0 1 3 3 6 55 291
1 7 4 14 2 4 1 0 0 0
0 | 399 k = rec.sport.hockey
22 2 0 3 5 3 0 3 2 1
293 24 12 7 0 4 2 13 0 0
0 | 396 l = sci.crypt
25 6 23 13 15 11 10 18 4 3
13 212 18 16 2 1 1 2 0 0
0 | 393 m = sci.electronics
14 4 5 2 5 7 2 17 7 3
0 38 268 11 4 3 4 2 0 0
0 | 396 n = sci.med
22 1 0 1 3 4 0 8 1 4
2 34 26 279 0 2 2 5 0 0
0 | 394 o = sci.space
43 1 2 4 0 4 1 11 4 1
0 9 33 8 249 2 5 14 7 0
0 | 398 p = soc.religion.christian
21 0 0 1 3 3 2 12 6 2
3 10 16 5 1 235 4 40 0 0
0 | 364 q = talk.politics.guns
41 0 0 2 1 1 5 3 3 7
0 10 12 5 1 8 250 27 0 0
0 | 376 r = talk.politics.mideast
34 0 0 1 2 4 3 16 2 1
5 14 12 6 4 67 8 131 0 0
0 | 310 s = talk.politics.misc
50 0 0 1 2 0 1 15 7 0
3 11 21 7 53 17 6 19 38 0
0 | 251 t = talk.religion.misc
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 | 0 u = DEFAULT
Default Category: DEFAULT: 20
{quote}
> Rework 20 NewsGroup shell script example to include SGD Example
> ---------------------------------------------------------------
>
> Key: MAHOUT-857
> URL: https://issues.apache.org/jira/browse/MAHOUT-857
> Project: Mahout
> Issue Type: Improvement
> Reporter: Grant Ingersoll
> Attachments: MAHOUT-857.patch
>
>
> We have build-20news-bayes.sh that runs our NB stuff on 20 news groups. We
> also have an SGD example that works on 20 news groups, but no script to run
> it. I'm going to rename build-20news-bayes.sh to classify-20news.sh and
> incorporate the two.
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