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- README file for the example files xor.xxx
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-
-
- Description: This example shows how to train the XOR-problem
- ============ on a neural network.
-
-
- Pattern-Files: xor.pat
- ============== xor-rec1.pat
- xor-rec2.pat
-
- Xor is the pattern-file for the standard feedforward XOR-network, the
- other pattern files are for recurrent networks solving the XOR-problem.
-
-
- Network-Files: xor.net
- ============== xor-rec.net
-
- xor.net topology: (2-1-1)-feedforward-Network with shortcut
- connections from the input units to the output unit. xor-rec.net is a
- recurrent network solving the XOR-problem with one or two time delays
- between input and output. It was trained with backpropagation through
- time (BPTT). See the user manual in the chapter Neural Network Models
- and Functions (chapter 8), section 'Backpropagation through time' for
- a more detailed description.
-
-
- Config-Files: xor.cfg
- ============= xor-rec.cfg
-
- The config files contains the configuration for a 2D display in both
- cases.
-
-
- Hints:
- ======
-
- The following table shows some learning functions one may use to train
- the network. In addition, it shows the learning-parameters and the
- number of cycles we needed to train the network successfully. These
- parameters have not been obtained with extensive studies of
- statistical significance. They are given as hints to start your own
- training sessions, but should not be cited as optimal or used in
- comparisons of learning procedures or network simulators.
-
- Learning-Function Learning-Parameters Cycles
-
- Backpropagation 2.0 2000
- Backpropagation with momentum 3.0 0.8 0.1 100
- Quickprop 0.3 2.25 0.0001 50
- Rprop 0.2
-
-
- XOR is a nice small problem to learn about neural networks and
- learning algorithms. Try to build a 2-2-1 xor-network and a
- 2-3-1-network (both without shortcuts) and compare their training
- times with the 2-1-1 network with shortcuts given above!
-
-
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- End of README file
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-