Raise Exception in LAR

A special case of constant function identified by LAR, raise the exception
SURGroup · Apr 7, 2022 · 3680ef6 · 3680ef6
1 parent 03143d3
commit 3680ef6
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/UQpy/surrogates/polynomial_chaos/regressions/LeastAngleRegression.py b/src/UQpy/surrogates/polynomial_chaos/regressions/LeastAngleRegression.py
@@ -95,6 +95,9 @@ def model_selection(pce_object: PolynomialChaosExpansion, target_error=1, check_
         overfitting = False
         BestLarsError = 0
         step = 0
+
+        if steps<3:
+            raise Exception('LAR identified constant function! Check your data.')
 
         while BestLarsError < target_error and step < steps - 2 and overfitting == False: