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+ {
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+ "nbformat": 4,
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+ "nbformat_minor": 0,
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+ "metadata": {
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+ "colab": {
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+ "provenance": []
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+ },
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+ "kernelspec": {
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+ "name": "python3",
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+ "display_name": "Python 3"
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+ },
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+ "language_info": {
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+ "name": "python"
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+ }
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+ },
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+ "cells": [
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+ {
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+ "cell_type": "code",
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+ "source": [
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+ "!pip install --upgrade tensorflow\n",
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+ "!pip install --upgrade keras\n"
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+ ],
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+ "metadata": {
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+ "colab": {
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+ "base_uri": "https://localhost:8080/"
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+ },
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+ "id": "U-cy2aDRljAL",
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+ "outputId": "e9efe1eb-0135-432f-9d46-3c39a8013f5b"
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+ },
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+ "execution_count": null,
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+ "outputs": [
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+ {
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+ "output_type": "stream",
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+ "name": "stdout",
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+ "text": [
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+ "Looking in indexes: https://pypi.org/simple, https://us-python.pkg.dev/colab-wheels/public/simple/\n",
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+ "Requirement already satisfied: tensorflow in /usr/local/lib/python3.10/dist-packages (2.12.0)\n",
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+ "Requirement already satisfied: absl-py>=1.0.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow) (1.4.0)\n",
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+ "Requirement already satisfied: astunparse>=1.6.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow) (1.6.3)\n",
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+ "Requirement already satisfied: flatbuffers>=2.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow) (23.3.3)\n",
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+ "Requirement already satisfied: gast<=0.4.0,>=0.2.1 in /usr/local/lib/python3.10/dist-packages (from tensorflow) (0.4.0)\n",
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+ "Requirement already satisfied: google-pasta>=0.1.1 in /usr/local/lib/python3.10/dist-packages (from tensorflow) (0.2.0)\n",
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+ "Requirement already satisfied: grpcio<2.0,>=1.24.3 in /usr/local/lib/python3.10/dist-packages (from tensorflow) (1.54.0)\n",
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+ "Requirement already satisfied: h5py>=2.9.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow) (3.8.0)\n",
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+ "Requirement already satisfied: jax>=0.3.15 in /usr/local/lib/python3.10/dist-packages (from tensorflow) (0.4.10)\n",
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+ "Requirement already satisfied: keras<2.13,>=2.12.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow) (2.12.0)\n",
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+ "Requirement already satisfied: libclang>=13.0.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow) (16.0.0)\n",
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+ "Requirement already satisfied: numpy<1.24,>=1.22 in /usr/local/lib/python3.10/dist-packages (from tensorflow) (1.22.4)\n",
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+ "Requirement already satisfied: opt-einsum>=2.3.2 in /usr/local/lib/python3.10/dist-packages (from tensorflow) (3.3.0)\n",
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+ "Requirement already satisfied: packaging in /usr/local/lib/python3.10/dist-packages (from tensorflow) (23.1)\n",
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+ "Requirement already satisfied: protobuf!=4.21.0,!=4.21.1,!=4.21.2,!=4.21.3,!=4.21.4,!=4.21.5,<5.0.0dev,>=3.20.3 in /usr/local/lib/python3.10/dist-packages (from tensorflow) (3.20.3)\n",
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+ "Requirement already satisfied: setuptools in /usr/local/lib/python3.10/dist-packages (from tensorflow) (67.7.2)\n",
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+ "Requirement already satisfied: six>=1.12.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow) (1.16.0)\n",
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+ "Requirement already satisfied: tensorboard<2.13,>=2.12 in /usr/local/lib/python3.10/dist-packages (from tensorflow) (2.12.2)\n",
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+ "Requirement already satisfied: tensorflow-estimator<2.13,>=2.12.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow) (2.12.0)\n",
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+ "Requirement already satisfied: termcolor>=1.1.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow) (2.3.0)\n",
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+ "Requirement already satisfied: typing-extensions>=3.6.6 in /usr/local/lib/python3.10/dist-packages (from tensorflow) (4.5.0)\n",
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+ "Requirement already satisfied: wrapt<1.15,>=1.11.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow) (1.14.1)\n",
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+ "Requirement already satisfied: tensorflow-io-gcs-filesystem>=0.23.1 in /usr/local/lib/python3.10/dist-packages (from tensorflow) (0.32.0)\n",
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+ "Requirement already satisfied: wheel<1.0,>=0.23.0 in /usr/local/lib/python3.10/dist-packages (from astunparse>=1.6.0->tensorflow) (0.40.0)\n",
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+ "Requirement already satisfied: ml-dtypes>=0.1.0 in /usr/local/lib/python3.10/dist-packages (from jax>=0.3.15->tensorflow) (0.1.0)\n",
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+ "Requirement already satisfied: scipy>=1.7 in /usr/local/lib/python3.10/dist-packages (from jax>=0.3.15->tensorflow) (1.10.1)\n",
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+ "Requirement already satisfied: google-auth<3,>=1.6.3 in /usr/local/lib/python3.10/dist-packages (from tensorboard<2.13,>=2.12->tensorflow) (2.17.3)\n",
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+ "Requirement already satisfied: google-auth-oauthlib<1.1,>=0.5 in /usr/local/lib/python3.10/dist-packages (from tensorboard<2.13,>=2.12->tensorflow) (1.0.0)\n",
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+ "Requirement already satisfied: markdown>=2.6.8 in /usr/local/lib/python3.10/dist-packages (from tensorboard<2.13,>=2.12->tensorflow) (3.4.3)\n",
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+ "Requirement already satisfied: requests<3,>=2.21.0 in /usr/local/lib/python3.10/dist-packages (from tensorboard<2.13,>=2.12->tensorflow) (2.27.1)\n",
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+ "Requirement already satisfied: tensorboard-data-server<0.8.0,>=0.7.0 in /usr/local/lib/python3.10/dist-packages (from tensorboard<2.13,>=2.12->tensorflow) (0.7.0)\n",
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+ "Requirement already satisfied: tensorboard-plugin-wit>=1.6.0 in /usr/local/lib/python3.10/dist-packages (from tensorboard<2.13,>=2.12->tensorflow) (1.8.1)\n",
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+ "Requirement already satisfied: werkzeug>=1.0.1 in /usr/local/lib/python3.10/dist-packages (from tensorboard<2.13,>=2.12->tensorflow) (2.3.0)\n",
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+ "Requirement already satisfied: cachetools<6.0,>=2.0.0 in /usr/local/lib/python3.10/dist-packages (from google-auth<3,>=1.6.3->tensorboard<2.13,>=2.12->tensorflow) (5.3.0)\n",
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+ "Requirement already satisfied: pyasn1-modules>=0.2.1 in /usr/local/lib/python3.10/dist-packages (from google-auth<3,>=1.6.3->tensorboard<2.13,>=2.12->tensorflow) (0.3.0)\n",
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+ "Requirement already satisfied: rsa<5,>=3.1.4 in /usr/local/lib/python3.10/dist-packages (from google-auth<3,>=1.6.3->tensorboard<2.13,>=2.12->tensorflow) (4.9)\n",
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+ "Requirement already satisfied: requests-oauthlib>=0.7.0 in /usr/local/lib/python3.10/dist-packages (from google-auth-oauthlib<1.1,>=0.5->tensorboard<2.13,>=2.12->tensorflow) (1.3.1)\n",
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+ "Requirement already satisfied: urllib3<1.27,>=1.21.1 in /usr/local/lib/python3.10/dist-packages (from requests<3,>=2.21.0->tensorboard<2.13,>=2.12->tensorflow) (1.26.15)\n",
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+ "Requirement already satisfied: certifi>=2017.4.17 in /usr/local/lib/python3.10/dist-packages (from requests<3,>=2.21.0->tensorboard<2.13,>=2.12->tensorflow) (2022.12.7)\n",
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+ "Requirement already satisfied: charset-normalizer~=2.0.0 in /usr/local/lib/python3.10/dist-packages (from requests<3,>=2.21.0->tensorboard<2.13,>=2.12->tensorflow) (2.0.12)\n",
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+ "Requirement already satisfied: idna<4,>=2.5 in /usr/local/lib/python3.10/dist-packages (from requests<3,>=2.21.0->tensorboard<2.13,>=2.12->tensorflow) (3.4)\n",
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+ "Requirement already satisfied: MarkupSafe>=2.1.1 in /usr/local/lib/python3.10/dist-packages (from werkzeug>=1.0.1->tensorboard<2.13,>=2.12->tensorflow) (2.1.2)\n",
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+ "Requirement already satisfied: pyasn1<0.6.0,>=0.4.6 in /usr/local/lib/python3.10/dist-packages (from pyasn1-modules>=0.2.1->google-auth<3,>=1.6.3->tensorboard<2.13,>=2.12->tensorflow) (0.5.0)\n",
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+ "Requirement already satisfied: oauthlib>=3.0.0 in /usr/local/lib/python3.10/dist-packages (from requests-oauthlib>=0.7.0->google-auth-oauthlib<1.1,>=0.5->tensorboard<2.13,>=2.12->tensorflow) (3.2.2)\n",
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+ "Looking in indexes: https://pypi.org/simple, https://us-python.pkg.dev/colab-wheels/public/simple/\n",
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+ "Requirement already satisfied: keras in /usr/local/lib/python3.10/dist-packages (2.12.0)\n"
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+ ]
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+ }
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+ ]
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+ },
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+ {
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+ "cell_type": "code",
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+ "execution_count": null,
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+ "metadata": {
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+ "colab": {
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+ "base_uri": "https://localhost:8080/",
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+ "height": 371
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+ },
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+ "id": "b6wDH2UglAGa",
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+ "outputId": "4049c353-40c4-4784-f064-e32e1678a309"
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+ },
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+ "outputs": [
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+ {
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+ "output_type": "error",
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+ "ename": "AttributeError",
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+ "evalue": "ignored",
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+ "traceback": [
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+ "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
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+ "\u001b[0;31mAttributeError\u001b[0m Traceback (most recent call last)",
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+ "\u001b[0;32m<ipython-input-5-80a54cfd4831>\u001b[0m in \u001b[0;36m<cell line: 50>\u001b[0;34m()\u001b[0m\n\u001b[1;32m 48\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m 49\u001b[0m \u001b[0;31m# Load the model weights from a checkpoint.\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m---> 50\u001b[0;31m \u001b[0mmodel\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mVisionTransformer\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mnum_classes\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0;36m100\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m 51\u001b[0m \u001b[0mmodel\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mload_weights\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\"checkpoints/model.ckpt\"\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m 52\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
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+ "\u001b[0;32m<ipython-input-5-80a54cfd4831>\u001b[0m in \u001b[0;36m__init__\u001b[0;34m(self, num_classes)\u001b[0m\n\u001b[1;32m 18\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m 19\u001b[0m \u001b[0;31m# The transformer encoder consists of a stack of self-attention layers.\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m---> 20\u001b[0;31m self.transformer_encoder = layers.TransformerEncoder(\n\u001b[0m\u001b[1;32m 21\u001b[0m \u001b[0mnum_heads\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0;36m8\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m 22\u001b[0m \u001b[0mnum_layers\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0;36m12\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
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+ "\u001b[0;31mAttributeError\u001b[0m: module 'keras.api._v2.keras.layers' has no attribute 'TransformerEncoder'"
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+ ]
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+ }
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+ ],
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+ "source": [
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+ "import tensorflow as tf\n",
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+ "import tensorflow.keras as keras\n",
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+ "from tensorflow.keras import layers\n",
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+ "\n",
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+ "# Define the model architecture.\n",
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+ "class VisionTransformer(keras.Model):\n",
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+ "\n",
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+ " def __init__(self, num_classes):\n",
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+ " super(VisionTransformer, self).__init__()\n",
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+ "\n",
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+ " # The embedding layer converts each image patch into a vector representation.\n",
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+ " self.embedding = layers.Embedding(\n",
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+ " input_dim=256,\n",
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+ " output_dim=512,\n",
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+ " input_shape=(7, 7, 3),\n",
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+ " trainable=True,\n",
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+ " )\n",
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+ "\n",
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+ " # The transformer encoder consists of a stack of self-attention layers.\n",
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+ " self.transformer_encoder = layers.TransformerEncoder(\n",
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+ " num_heads=8,\n",
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+ " num_layers=12,\n",
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+ " dropout=0.1,\n",
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+ " )\n",
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+ "\n",
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+ " # The classification layer outputs the class probabilities for each image.\n",
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+ " self.classification = layers.Dense(num_classes, activation=\"softmax\")\n",
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+ "\n",
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+ " def call(self, inputs):\n",
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+ " # Extract the image patches from the input image.\n",
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+ " patches = tf.image.extract_patches(\n",
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+ " inputs=inputs,\n",
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+ " size=(7, 7, 3),\n",
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+ " strides=(2, 2, 1),\n",
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+ " padding=\"SAME\",\n",
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+ " )\n",
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+ "\n",
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+ " # Convert the image patches into vector representations.\n",
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+ " embedded_patches = self.embedding(patches)\n",
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+ "\n",
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+ " # Encode the image patches using the transformer encoder.\n",
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+ " encoded_patches = self.transformer_encoder(embedded_patches)\n",
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+ "\n",
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+ " # Classify the image using the classification layer.\n",
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+ " predictions = self.classification(encoded_patches)\n",
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+ "\n",
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+ " return predictions\n",
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+ "\n",
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+ "# Load the model weights from a checkpoint.\n",
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+ "model = VisionTransformer(num_classes=100)\n",
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+ "model.load_weights(\"checkpoints/model.ckpt\")\n",
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+ "\n",
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+ "# Create a video capture object.\n",
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+ "cap = cv2.VideoCapture(0)\n",
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+ "\n",
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+ "# Start a loop to capture frames from the camera and classify them.\n",
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+ "while True:\n",
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+ "\n",
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+ " # Capture a frame from the camera.\n",
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+ " ret, frame = cap.read()\n",
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+ "\n",
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+ " # Convert the frame to a NumPy array.\n",
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+ " frame = np.array(frame)\n",
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+ "\n",
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+ " # Classify the frame.\n",
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+ " predictions = model.predict(frame)\n",
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+ "\n",
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+ " # Display the classification results.\n",
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+ " cv2.putText(frame, \"Prediction: {}\".format(predictions[0]), (10, 30), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 255, 0), 2)\n",
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+ "\n",
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+ " # Display the frame.\n",
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+ " cv2.imshow(\"Frame\", frame)\n",
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+ "\n",
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+ " # Wait for a key press.\n",
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+ " key = cv2.waitKey(1) & 0xFF\n",
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+ "\n",
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+ " # If the key `q` is pressed, break out of the loop.\n",
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+ " if key == ord(\"q\"):\n",
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+ " break\n",
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+ "\n",
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+ "# Release the video capture object.\n",
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+ "cap.release()\n",
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+ "\n",
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+ "# Close all open windows.\n",
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+ "cv2.destroyAllWindows()"
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+ ]
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+ }
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+ ]
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+ }