java.lang.NullPointerException

neuroph | reiden10 | 4 years ago
  1. 0

    Null pointer exception on iteration

    neuroph | 4 years ago | elisacarli
    java.lang.NullPointerException
  2. 0

    Error NullPointer Neuroph doOneLearningIteration

    Stack Overflow | 6 months ago | chickensoup
    java.lang.NullPointerException
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  4. 0
    Assign onCickListener to imageView in ExpandableListView inside getChildView.
  5. 0
    The Fragment was destroyed, and getActivity() returned null. Don't destroy the Fragment.

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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.neuroph.nnet.learning.MomentumBackpropagation.updateNeuronWeights()
    2. org.neuroph.nnet
      BackPropagation.updateNetworkWeights
      1. org.neuroph.nnet.learning.MomentumBackpropagation.updateNeuronWeights(MomentumBackpropagation.java:71)
      2. org.neuroph.nnet.learning.SigmoidDeltaRule.calculateErrorAndUpdateOutputNeurons(SigmoidDeltaRule.java:84)
      3. org.neuroph.nnet.learning.BackPropagation.updateNetworkWeights(BackPropagation.java:56)
      3 frames
    3. org.neuroph.core
      SupervisedLearning.doLearningEpoch
      1. org.neuroph.core.learning.SupervisedLearning.learnPattern(SupervisedLearning.java:175)
      2. org.neuroph.core.learning.SupervisedLearning.doLearningEpoch(SupervisedLearning.java:148)
      2 frames
    4. test_neuroph
      Main.main
      1. test_neuroph.Main.main(Main.java:43)
      1 frame