Merge pull request aws#224 from awslabs/arpin_pca_mnist_payload_size

Fixed: payload was larger than SageMaker limit

Author: djarpin

introduction_to_amazon_algorithms/pca_mnist/pca_mnist.ipynb

@@ -338,7 +338,7 @@
     "import numpy as np\n",
     "\n",
     "eigendigits = []\n",
-    "for array in np.array_split(train_set[0].T, 50):\n",
+    "for array in np.array_split(train_set[0].T, 100):\n",
     "    result = pca_predictor.predict(array)\n",
     "    eigendigits += [r['projection'] for r in result['projections']]\n",
     "\n",