Formula: y_transform ~ x^transform_exp * length * predict2_0(r1, k, d, 
    kmercov, bias, x)

Parameters:
         Estimate Std. Error t value Pr(>|t|)    
d       2.096e-02  8.034e-02   0.261    0.794    
r1      1.024e-02  4.024e-03   2.544    0.011 *  
kmercov 1.265e+02  1.342e+00  94.320  < 2e-16 ***
bias    0.000e+00  3.208e-01   0.000    1.000    
length  1.016e+06  1.650e+05   6.156 8.97e-10 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 3290000 on 1995 degrees of freedom

Number of iterations to convergence: 23 
Achieved convergence tolerance: 1.49e-08