fix

Author: Lukas Molzberger

src/main/java/org/aika/corpus/Document.java

@@ -183,12 +183,15 @@ public void propagate() {
     public void generateCandidates() {
         TreeSet<Candidate> tmp = new TreeSet<>();
         int i = 0;
-        for (InterpretationNode cn : bottom.children) {
+
+        for(Activation act: addedActivations) {
+            InterpretationNode cn = act.key.interpretation;
             if (cn.state == UNKNOWN && cn.activation.upperBound > 0.0) {
                 tmp.add(new Candidate(cn, i++));
             }
         }
 
+
         long v = visitedCounter++;
         for(Activation act: inputNeuronActivations) {
             act.visited = v;

src/main/java/org/aika/neuron/INeuron.java

@@ -614,22 +614,24 @@ public void register(Activation act) {
 
         Document doc = act.doc;
         INeuron.ThreadState th = ak.node.neuron.get().getThreadState(doc.threadId, true);
-        if (th.activations.isEmpty()) {
-            doc.activatedNeurons.add(ak.node.neuron.get());
-        }
-        th.activations.put(ak, act);
+        if(!th.activations.containsKey(ak)) {
+            if (th.activations.isEmpty()) {
+                doc.activatedNeurons.add(ak.node.neuron.get());
+            }
+            th.activations.put(ak, act);
 
-        TreeMap<NodeActivation.Key, Activation> actEnd = th.activationsEnd;
-        if (actEnd != null) actEnd.put(ak, act);
+            TreeMap<NodeActivation.Key, Activation> actEnd = th.activationsEnd;
+            if (actEnd != null) actEnd.put(ak, act);
 
-        TreeMap<NodeActivation.Key, Activation> actRid = th.activationsRid;
-        if (actRid != null) actRid.put(ak, act);
+            TreeMap<NodeActivation.Key, Activation> actRid = th.activationsRid;
+            if (actRid != null) actRid.put(ak, act);
 
-        if (ak.rid != null) {
-            doc.activationsByRid.put(ak, act);
-        }
+            if (ak.rid != null) {
+                doc.activationsByRid.put(ak, act);
+            }
 
-        doc.addedActivations.add(act);
+            doc.addedActivations.add(act);
+        }
 
         linkActivation(act);
     }