worn in the case on non-convergence

UDST · May 4, 2018 · eab97ea · eab97ea
1 parent 2497039
commit eab97ea
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/urbansim/urbanchoice/mnl.py b/urbansim/urbanchoice/mnl.py
@@ -245,6 +245,10 @@ def mnl_estimate(data, chosen, numalts, GPU=False, coeffrange=(-3, 3),
                                                    approx_grad=False,
                                                    bounds=bounds
                                                    )
+
+    if bfgs_result[2]['warnflag'] > 0:
+        logger.warn("mnl did not converge correctly: %s",  bfgs_result)
+
     beta = bfgs_result[0]
     stderr = mnl_loglik(
         beta, data, chosen, numalts, weights, stderr=1, lcgrad=lcgrad)