X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?a=blobdiff_plain;f=dagnn.lua;h=2ed25c531bd9c02047e33f302a274b18f1b5439a;hb=60568def49e4c624e54f53b4be5783d6cfbe1ea9;hp=a6414b3b569d92c28af9387aa0d6c2f31d8e63ef;hpb=da3a60ffa7e1a39e4d01b405c2d80d84c3722c2c;p=dagnn.git

diff --git a/dagnn.lua b/dagnn.lua
index a6414b3..2ed25c5 100755
--- a/dagnn.lua
+++ b/dagnn.lua
@@ -46,8 +46,11 @@ function DAG:setInput(i)
    self.inputModules = i
    self:applyOnModules(
       function(m)
-         if (not self.succ[m] or #self.succ[m] == 0) or (self.pred[m] and #self.pred[m] > 0) then
-            error('Invalid input edges.')
+         if not self.succ[m] or #self.succ[m] == 0 then
+            error('Input modules must have outgoing  edges.')
+         end
+         if self.pred[m] and #self.pred[m] > 0 then
+            error('Input modules cannog have incoming edges.')
          end
       end,
       self.inputModules
@@ -59,8 +62,11 @@ function DAG:setOutput(o)
    self.outputModules = o
    self:applyOnModules(
       function(m)
-         if (not self.pred[m] or #self.pred[m] == 0) or (self.succ[m] and #self.succ[m] > 0) then
-            error('Invalid output edges.')
+         if not self.pred[m] or #self.pred[m] == 0 then
+            error('Output module must have incoming edges.')
+         end
+         if self.succ[m] and #self.succ[m] > 0 then
+            error('Output module cannot have outgoing edges.')
          end
       end,
       self.outputModules