hotfix for credibility

Author: aeftimia

mvtk/credibility.py

@@ -20,7 +20,11 @@ def credible_interval(positive, negative, credibility=0.5, prior=(1, 1)):
     returns:
         (lower bound, upper bound)
     """
-    distribution = beta(positive + prior[0], negative + prior[1])
+    positive += prior[0]
+    negative += prior[1]
+    distribution = beta(positive, negative)
+    if positive + negative <= 0:
+        raise ValueError("Counts plus pseudocounts must be positive")
     mode = positive / (positive + negative)
     cdf_mode = distribution.cdf(mode)
     cred_2 = credibility / 2

mvtk/version.py

@@ -1 +1 @@
-__version__ = "0.1.1"
+__version__ = "0.1.2"