> Sys.time();
[1] "2014-10-21 10:57:43 EEST"

> summary(m2, digits = 2, style = "pmax")
Call: earth(formula=fmla, data=Dm, degree=2)

ELTYY =
  7.1
  -    0.25 * pmax(0,       27 -   DURURA) 
  +    0.17 * pmax(0,     ACT4 -    -0.61) 
  +    0.23 * pmax(0,     ACT5 -     0.13) 
  -    0.37 * pmax(0,     0.13 -     ACT5) 
  +    0.13 * pmax(0,        8 -  SOSVERK) 
  +   0.028 * pmax(0,       25 -    SAIPV) 
  + 0.00019 * pmax(0, ELAKETUb -     1563) 
  -     7.9 * pmax(0,      1.7 -     JOB2) * pmax(0,     JOB4 -      2.3) 
  -     1.2 * pmax(0,      1.7 -     JOB2) * pmax(0,     ACT2 -      1.5) 
  +    0.11 * pmax(0,      1.7 -     JOB2) * pmax(0,      1.5 -     ACT2) 
  +       3 * pmax(0,     JOB2 -      1.7) * pmax(0,     ACT3 -   -0.031) 
  -  0.0056 * pmax(0,     JOB2 -      1.7) * pmax(0,     1850 - ELAKETUb) 
  +   0.012 * pmax(0,     JOB4 -      2.1) * pmax(0,     1563 - ELAKETUb) 
  +    0.29 * pmax(0,     ACT2 -    -0.72) * pmax(0,     0.13 -     ACT5) 
  +       2 * pmax(0,     ACT2 -      1.9) * pmax(0,        8 -  SOSVERK) 
  -   0.062 * pmax(0,      1.9 -     ACT2) * pmax(0,        8 -  SOSVERK) 
  +    0.37 * pmax(0,     0.13 -     ACT5) * pmax(0,    0.055 -     ACT6) 
  -    0.62 * pmax(0,     0.13 -     ACT5) * pmax(0,   ASUM01 -        0) 
  -   0.011 * pmax(0,     ACT6 -      1.7) * pmax(0,     1563 - ELAKETUb) 
  - 0.00047 * pmax(0,      1.7 -     ACT6) * pmax(0,     1563 - ELAKETUb) 
  -   0.086 * pmax(0,        8 -  SOSVERK) * pmax(0,        1 -   LAHTO1) 
  +    0.31 * pmax(0,        8 -  SOSVERK) * pmax(0,    -0.16 -   LAHTO2) 

Selected 23 of 42 terms, and 14 of 21 predictors 
Importance: DURURA, SOSVERK, LAHTO1, SAIPV, ACT5, ASUM01, JOB2, ACT2, ...
Number of terms at each degree of interaction: 1 7 15
GCV 1.2    RSS 1406    GRSq 0.22    RSq 0.28

> evimp(m2, trim=FALSE);
               nsubsets   gcv    rss
DURURA               22 100.0  100.0
SOSVERK              21  80.5   84.7
LAHTO1               21  80.5   84.7
SAIPV                20  65.6   73.5
ACT5                 19  50.1   62.6
ASUM01               19  50.1   62.6
JOB2                 18  44.5   58.4
ACT2                 18  44.5   58.4
ELAKETUb             15  38.9   52.1
ACT4                 14  34.3   48.6
ACT3                 13  30.4   45.4
LAHTO2               11  24.4   40.0
ACT6                 10  20.7   37.0
JOB4                  3  12.3   20.5
MIES-unused           0   0.0    0.0
IKATUTK-unused        0   0.0    0.0
EDUCI-unused          0   0.0    0.0
TUTKP-unused          0   0.0    0.0
JOB1-unused           0   0.0    0.0
JOB3-unused           0   0.0    0.0
ACT1-unused           0   0.0    0.0

> sink();