neural networks: added and linked

wiki/linux/raspberry_pi.md

@@ -20,8 +20,8 @@ This section addresses the usage of the
 
 #### Preparing TensorFlow Models for the AI HAT+
 
-For neural networks to run on the Hailo AI module and the AI HAT+ they have to be converted to the
+For [neural networks](/wiki/neural_network.md) to run on the Hailo AI module and the AI HAT+ they
-`.hef` format.
+have to be converted to the `.hef` format.
 This section assumes the neural network is using
 [TensorFlow](/wiki/programming_language/python.md#tensorflow) and is available as a `.tf` or
 `.tflite` file.

wiki/neural_network.md

@@ -0,0 +1,32 @@
+# Neural Network
+
+A neural network - often shortened to NN - is a computational model which is part of so called
+artificial intelligence.
+
+## Useful Tools
+
+There are some useful tools to use with neural networks.
+
+- [Netron](https://github.com/lutzroeder/netron) is a open-source and self-hostable tool to
+  visualize neural networks.
+  It is also easily available from the [official website](https://netron.app/).
+
+## Frameworks
+
+The following is a list of frameworks to design or run neural networks.
+
+- [PyTorch](/wiki/programming_language/python.md#pytorch)
+- [Tensorflow](/wiki/programming_language/python.md#tensorflow)
+
+## Neural Network Accelerators
+
+Neural network accelerators are devices to run neural networks by inference.
+The following is a list of possible devices.
+
+- [Raspberry Pi AI Hat+](/wiki/linux/raspberry_pi.md#ai-hat) is a standalone accelerator which
+  directly attaches to a [Raspberry Pi](/wiki/linux/raspberry_pi.md) via the GPIO header.
+- [ESP32S3](/wiki/microcontroller.md#esp32) is a self-contained microcontroller by Seeed with
+  integrated AI acceleration.
+  It does not need an external connection and is especially useful when a small form-factor is
+  needed.
+- Google Coral Edge TPU is a USB-connected accelerator that is not embedded in the host system.

wiki/programming_language/python.md

@@ -162,6 +162,8 @@ This flag is to be used with care.
 ### PyTorch
 
 This section addresses the [PyTorch module](https://pytorch.org/).
+Pytorch is a machine learning resource which is often used for
+[neural networks](/wiki/neural_network.md).
 
 #### Setup Pytorch with Cuda for GPU usage
 
@@ -190,6 +192,8 @@ This should give back `True`.
 ### TensorFlow
 
 This section addresses the [TensorFlow module](https://www.tensorflow.org/).
+Tensorflos is a machine learning resource which is often used for
+[neural networks](/wiki/neural_network.md).
 
 #### Basic Usage of TensorFlow