notebooks-1/9-mlp-gluon.ipynb

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   "source": [
    "# Concise Implementation of Multilayer Perceptron"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2019-07-02T21:21:36.954926Z",
     "start_time": "2019-07-02T21:21:33.324711Z"
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   "source": [
    "import d2l\n",
    "from mxnet import gluon, npx, init\n",
    "from mxnet.gluon import nn\n",
    "npx.set_np()\n",
    "\n",
    "train_iter, test_iter = d2l.load_data_fashion_mnist(batch_size=256)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "The model"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2019-07-02T21:21:36.964731Z",
     "start_time": "2019-07-02T21:21:36.957821Z"
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   "outputs": [],
   "source": [
    "net = nn.Sequential()\n",
    "net.add(nn.Dense(256, activation='relu'),\n",
    "        nn.Dense(10))\n",
    "net.initialize(init.Normal(sigma=0.01))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
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   },
   "source": [
    "Training"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2019-07-02T21:21:59.272107Z",
     "start_time": "2019-07-02T21:21:36.966596Z"
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     "id": "",
     "n": "6"
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       "   </g>\n",
       "  </g>\n",
       " </g>\n",
       " <defs>\n",
       "  <clipPath id=\"p6a2490ef6e\">\n",
       "   <rect height=\"135.9\" width=\"195.3\" x=\"30.103125\" y=\"10.7\"/>\n",
       "  </clipPath>\n",
       " </defs>\n",
       "</svg>\n"
      ],
      "text/plain": [
       "<Figure size 252x180 with 1 Axes>"
      ]
     },
     "metadata": {
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     },
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    }
   ],
   "source": [
    "loss = gluon.loss.SoftmaxCrossEntropyLoss()\n",
    "trainer = gluon.Trainer(net.collect_params(), \n",
    "                        'sgd', {'learning_rate': 0.5})\n",
    "d2l.train_ch3(net, train_iter, test_iter, loss, 10, trainer)"
   ]
  }
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