Illinois Institute Of Technology

CS 584

CS 584 Machine Learning
Spring 2020 Midterm Test
Instruction
1. Calculate your answers using all the available precision
2. If the fnal numeric answer has more than four decimal places, then round the numeric answer
to the nearest fourth decimal place. Otherwise, please give the exact value.
Question 1 (5 points)
Based on the MNLogit output below, what phenomenon may have happened?
Optimization terminated successfully.
Current function value: 0.479393
Iterations 24
MNLogit Regression Results
==============================================================================
Dep. Variable: BAD No. Observations: 4981
Model: MNLogit Df Residuals: 4973
Method: MLE Df Model: 7
Date: Mon, 02 Mar 2020 Pseudo R-squ.: 0.06869
Time: 11:21:49 Log-Likelihood: -2387.9
converged: True LL-Null: -2564.0
Covariance Type: nonrobust LLR p-value: 4.104e-72
==================================================================================
BAD=1 coef std err z P>|z| [0.025 0.975]
----------------------------------------------------------------------------------
const -0.8412 nan nan nan nan nan
REASON_DebtCon -0.5134 1.26e+06 -4.06e-07 1.000 -2.48e+06 2.48e+06
REASON_HomeImp -0.3278 1.37e+06 -2.39e-07 1.000 -2.69e+06 2.69e+06
JOB_Mgr -0.0073 7.27e+05 -1.01e-08 1.000 -1.42e+06 1.42e+06
JOB_Office -0.7000 7.27e+05 -9.63e-07 1.000 -1.42e+06 1.42e+06
JOB_Other -0.0939 7.27e+05 -1.29e-07 1.000 -1.42e+06 1.42e+06
JOB_ProfExe -0.5037 7.27e+05 -6.93e-07 1.000 -1.42e+06 1.42e+06
JOB_Sales 0.4530 7.27e+05 6.23e-07 1.000 -1.42e+06 1.42e+06
JOB_Self 0.0106 7.27e+05 1.46e-08 1.000 -1.42e+06 1.42e+06
DEROG 0.6917 0.049 14.167 0.000 0.596 0.787