- Variables: `x`, `y`, `y_predict`, `cost` and `avg_cost`. [Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/framework.py#L93)
- Layers: `fluid.layers.data`, `fluid.layers.fc` and `fluid.layers.mean` are layers. [Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/layers.py)
- Variables: `x`, `y`, `y_predict`, `cost` and `avg_cost`. [Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/framework.py#)
- Layers: `fluid.layers.data`, `fluid.layers.fc` and `fluid.layers.mean` are layers. [Python](https://github.com/PaddlePaddle/Paddle/tree/develop/python/paddle/v2/fluid/layers)
- Every Layer has one or more operators and variables/parameters
- All the operators are defined at [`paddle/operators/`](https://github.com/PaddlePaddle/Paddle/tree/develop/paddle/operators). Other worth-looking files:
- Base class: [`paddle/framework/operator.h`](https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/operator.h)
<li>Layers: <codeclass="docutils literal"><spanclass="pre">fluid.layers.data</span></code>, <codeclass="docutils literal"><spanclass="pre">fluid.layers.fc</span></code> and <codeclass="docutils literal"><spanclass="pre">fluid.layers.mean</span></code> are layers. <aclass="reference external"href="https://github.com/PaddlePaddle/Paddle/tree/develop/python/paddle/v2/fluid/layers">Python</a><ul>
<li>Every Layer has one or more operators and variables/parameters<ul>
<li>All the operators are defined at <aclass="reference external"href="https://github.com/PaddlePaddle/Paddle/tree/develop/paddle/operators"><codeclass="docutils literal"><spanclass="pre">paddle/operators/</span></code></a>. Other worth-looking files:<ul>
- Variables: `x`, `y`, `y_predict`, `cost` and `avg_cost`. [Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/framework.py#L93)
- Layers: `fluid.layers.data`, `fluid.layers.fc` and `fluid.layers.mean` are layers. [Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/layers.py)
- Variables: `x`, `y`, `y_predict`, `cost` and `avg_cost`. [Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/framework.py#)
- Layers: `fluid.layers.data`, `fluid.layers.fc` and `fluid.layers.mean` are layers. [Python](https://github.com/PaddlePaddle/Paddle/tree/develop/python/paddle/v2/fluid/layers)
- Every Layer has one or more operators and variables/parameters
- All the operators are defined at [`paddle/operators/`](https://github.com/PaddlePaddle/Paddle/tree/develop/paddle/operators). Other worth-looking files:
- Base class: [`paddle/framework/operator.h`](https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/operator.h)
<li>Layers: <codeclass="docutils literal"><spanclass="pre">fluid.layers.data</span></code>, <codeclass="docutils literal"><spanclass="pre">fluid.layers.fc</span></code> and <codeclass="docutils literal"><spanclass="pre">fluid.layers.mean</span></code> are layers. <aclass="reference external"href="https://github.com/PaddlePaddle/Paddle/tree/develop/python/paddle/v2/fluid/layers">Python</a><ul>
<li>Every Layer has one or more operators and variables/parameters<ul>
<li>All the operators are defined at <aclass="reference external"href="https://github.com/PaddlePaddle/Paddle/tree/develop/paddle/operators"><codeclass="docutils literal"><spanclass="pre">paddle/operators/</span></code></a>. Other worth-looking files:<ul>