Options: -M 4.0 

M5 pruned model tree:
(using smoothed linear models)

loc <= 217.5 : 
|   loc <= 94 : 
|   |   cbm <= 0.5 : 
|   |   |   loc <= 5.5 : LM1 (48/0%)
|   |   |   loc >  5.5 : 
|   |   |   |   rfc <= 19.5 : 
|   |   |   |   |   npm <= 1.5 : 
|   |   |   |   |   |   npm <= 0.5 : 
|   |   |   |   |   |   |   rfc <= 6.5 : LM2 (12/33.629%)
|   |   |   |   |   |   |   rfc >  6.5 : LM3 (4/0%)
|   |   |   |   |   |   npm >  0.5 : LM4 (27/45.197%)
|   |   |   |   |   npm >  1.5 : LM5 (92/33.788%)
|   |   |   |   rfc >  19.5 : LM6 (34/0%)
|   |   cbm >  0.5 : LM7 (128/16.704%)
|   loc >  94 : LM8 (150/50.484%)
loc >  217.5 : 
|   rfc <= 69.5 : 
|   |   loc <= 1087.5 : 
|   |   |   loc <= 606.5 : 
|   |   |   |   rfc <= 5 : 
|   |   |   |   |   loc <= 356 : LM9 (26/85.445%)
|   |   |   |   |   loc >  356 : LM10 (16/45.121%)
|   |   |   |   rfc >  5 : LM11 (161/91.795%)
|   |   |   loc >  606.5 : 
|   |   |   |   mfa <= 0.743 : LM12 (40/62.412%)
|   |   |   |   mfa >  0.743 : LM13 (14/0%)
|   |   loc >  1087.5 : LM14 (74/43.474%)
|   rfc >  69.5 : 
|   |   rfc <= 117.5 : LM15 (49/91.363%)
|   |   rfc >  117.5 : 
|   |   |   loc <= 2593 : LM16 (27/145.706%)
|   |   |   loc >  2593 : 
|   |   |   |   mfa <= 0.276 : LM17 (4/39.524%)
|   |   |   |   mfa >  0.276 : LM18 (3/64.316%)

LM num: 1
bug = 
	-0.0107 * wmc 
	- 0.0032 * dit 
	- 0.0004 * noc 
	+ 0.0006 * cbo 
	+ 0.0047 * rfc 
	+ 0.0006 * ca 
	- 0.0004 * ce 
	+ 0.0064 * npm 
	+ 0 * loc 
	+ 0.0138 * mfa 
	+ 0.9868

LM num: 2
bug = 
	-0.1345 * wmc 
	- 0.0032 * dit 
	- 0.0004 * noc 
	+ 0.0013 * cbo 
	+ 0.0077 * rfc 
	+ 0.0005 * ca 
	- 0.0004 * ce 
	+ 0.1374 * npm 
	+ 0.002 * loc 
	+ 0.0138 * mfa 
	+ 0.8783

LM num: 3
bug = 
	-0.0737 * wmc 
	- 0.0032 * dit 
	- 0.0004 * noc 
	+ 0.0013 * cbo 
	+ 0.0077 * rfc 
	+ 0.0005 * ca 
	- 0.0004 * ce 
	+ 0.1374 * npm 
	+ 0.002 * loc 
	+ 0.0138 * mfa 
	+ 0.7947

LM num: 4
bug = 
	-0.0639 * wmc 
	- 0.0032 * dit 
	- 0.0004 * noc 
	+ 0.0013 * cbo 
	+ 0.0077 * rfc 
	+ 0.0005 * ca 
	- 0.0004 * ce 
	+ 0.1098 * npm 
	+ 0.0014 * loc 
	+ 0.0138 * mfa 
	+ 0.9244

LM num: 5
bug = 
	-0.0237 * wmc 
	- 0.0032 * dit 
	- 0.0004 * noc 
	+ 0.0094 * cbo 
	+ 0.0147 * rfc 
	- 0.0052 * ca 
	- 0.0004 * ce 
	+ 0.0196 * npm 
	+ 0 * loc 
	+ 0.0138 * mfa 
	+ 0.9034

LM num: 6
bug = 
	-0.0157 * wmc 
	- 0.0032 * dit 
	- 0.0004 * noc 
	+ 0.0006 * cbo 
	+ 0.0071 * rfc 
	+ 0.0012 * ca 
	- 0.0004 * ce 
	+ 0.0092 * npm 
	+ 0 * loc 
	+ 0.0138 * mfa 
	+ 0.9761

LM num: 7
bug = 
	-0.0029 * wmc 
	- 0.0032 * dit 
	- 0.0004 * noc 
	+ 0.0006 * cbo 
	+ 0.0012 * rfc 
	+ 0.0033 * ca 
	- 0.0004 * ce 
	+ 0.0017 * npm 
	+ 0 * loc 
	+ 0.0138 * mfa 
	+ 1.0033

LM num: 8
bug = 
	-0.0019 * wmc 
	- 0.0032 * dit 
	- 0.0004 * noc 
	+ 0.0074 * cbo 
	+ 0.0008 * rfc 
	- 0.0002 * ca 
	- 0.0004 * ce 
	+ 0.001 * npm 
	+ 0 * loc 
	+ 0.0114 * mfa 
	+ 1.0613

LM num: 9
bug = 
	0.0004 * wmc 
	- 0.0526 * dit 
	- 0.0005 * noc 
	+ 0.0088 * cbo 
	+ 0.0005 * rfc 
	- 0.0051 * ca 
	- 0.0111 * ce 
	- 0.0037 * npm 
	- 0.0036 * loc 
	+ 0.3488 * mfa 
	+ 0.0006 * cbm 
	+ 2.5467

LM num: 10
bug = 
	0.0004 * wmc 
	- 0.0526 * dit 
	- 0.0005 * noc 
	+ 0.0088 * cbo 
	+ 0.0005 * rfc 
	- 0.0051 * ca 
	- 0.0111 * ce 
	- 0.0037 * npm 
	+ 0.0014 * loc 
	+ 0.3488 * mfa 
	+ 0.0006 * cbm 
	+ 1.6506

LM num: 11
bug = 
	0.0118 * wmc 
	- 0.0379 * dit 
	- 0.0005 * noc 
	+ 0.0049 * cbo 
	+ 0.0078 * rfc 
	+ 0.0045 * ca 
	- 0.0063 * ce 
	- 0.0245 * npm 
	+ 0.001 * loc 
	+ 0.1979 * dam 
	+ 0.2292 * mfa 
	+ 0.0252 * cbm 
	+ 0.5633

LM num: 12
bug = 
	0.0004 * wmc 
	+ 0.1437 * dit 
	- 0.0005 * noc 
	+ 0.0065 * cbo 
	+ 0.0017 * rfc 
	- 0.004 * ca 
	- 0.0079 * ce 
	- 0.0009 * npm 
	+ 0 * loc 
	+ 0.4589 * mfa 
	+ 0.0006 * cbm 
	+ 0.9496

LM num: 13
bug = 
	0.0004 * wmc 
	- 0.1383 * dit 
	- 0.0005 * noc 
	+ 0.0065 * cbo 
	+ 0.0027 * rfc 
	- 0.004 * ca 
	- 0.0079 * ce 
	- 0.0009 * npm 
	+ 0 * loc 
	+ 0.6167 * mfa 
	+ 0.0006 * cbm 
	+ 1.1452

LM num: 14
bug = 
	0.0004 * wmc 
	- 0.0399 * dit 
	- 0.0005 * noc 
	+ 0.0042 * cbo 
	+ 0.0005 * rfc 
	- 0.0026 * ca 
	- 0.0055 * ce 
	- 0.0009 * npm 
	+ 0 * loc 
	+ 0.221 * mfa 
	+ 0.0006 * cbm 
	+ 1.784

LM num: 15
bug = 
	0.0015 * wmc 
	- 0.2762 * dit 
	- 0.0005 * noc 
	- 0.0143 * cbo 
	+ 0.0012 * rfc 
	- 0.0218 * ca 
	+ 0.0265 * ce 
	- 0.0027 * npm 
	- 0.0001 * loc 
	- 0.0643 * moa 
	+ 0.5425 * mfa 
	+ 0.0539 * cbm 
	+ 1.9527

LM num: 16
bug = 
	-0.0036 * wmc 
	- 0.349 * dit 
	- 0.0005 * noc 
	- 0.0185 * cbo 
	+ 0.0012 * rfc 
	+ 0.0182 * ca 
	+ 0.0189 * ce 
	- 0.0027 * npm 
	+ 0.0003 * loc 
	+ 1.2116 * mfa 
	+ 0.0119 * cbm 
	+ 2.0547

LM num: 17
bug = 
	0.0018 * wmc 
	- 0.4935 * dit 
	- 0.0005 * noc 
	- 0.0185 * cbo 
	+ 0.0012 * rfc 
	+ 0.0182 * ca 
	+ 0.0189 * ce 
	- 0.0027 * npm 
	+ 0.0005 * loc 
	+ 2.7077 * mfa 
	+ 0.0119 * cbm 
	+ 1.7857

LM num: 18
bug = 
	0.0015 * wmc 
	- 0.4935 * dit 
	- 0.0005 * noc 
	- 0.0185 * cbo 
	+ 0.0012 * rfc 
	+ 0.0182 * ca 
	+ 0.0189 * ce 
	- 0.0027 * npm 
	+ 0.0005 * loc 
	+ 2.7622 * mfa 
	+ 0.0119 * cbm 
	+ 1.9492

Number of Rules : 18

Time taken to build model: 0.68 seconds
Time taken to test model on training data: 0.02 seconds

=== Error on training data ===

Correlation coefficient                  0.7226
Mean absolute error                      0.288 
Root mean squared error                  0.5138
Relative absolute error                 55.605  %
Root relative squared error             70.1011 %
Total Number of Instances              909     



=== Cross-validation ===

Correlation coefficient                  0.5155
Mean absolute error                      0.3414
Root mean squared error                  0.631 
Relative absolute error                 65.6997 %
Root relative squared error             85.5442 %
Total Number of Instances              909