one_hot_vector.ipynb

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      "metadata": {
        "id": "X5V8pbV8E77K"
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      "source": [
        "import numpy as np\n",
        "import pandas as pd"
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "sentence = \"\"\"Thomas Jefferson began building Monticello at the age  of 26.\"\"\""
      ],
      "metadata": {
        "id": "3-5gFFTiFCYG"
      },
      "execution_count": 22,
      "outputs": []
    },
    {
      "cell_type": "code",
      "source": [
        "token_sequence = str.split(sentence)\n",
        "vocab = sorted(set(token_sequence))\n",
        "', '.join(vocab)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 35
        },
        "id": "zbTSd4--FLRD",
        "outputId": "947d4ead-b829-4c80-a0ef-3cdfc76795bd"
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      "execution_count": 23,
      "outputs": [
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          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "'26., Jefferson, Monticello, Thomas, age, at, began, building, of, the'"
            ],
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              "type": "string"
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          "metadata": {},
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      "cell_type": "code",
      "source": [
        "num_tokens = len(token_sequence)\n",
        "vocab_size = len(vocab)"
      ],
      "metadata": {
        "id": "7J0IKxbwFS0y"
      },
      "execution_count": 24,
      "outputs": []
    },
    {
      "cell_type": "code",
      "source": [
        "onehot_vectors = np.zeros((num_tokens,vocab_size), int)\n",
        "for i, word in enumerate(token_sequence):\n",
        "  onehot_vectors[i, vocab.index(word)] = 1\n",
        "' '.join(vocab)\n",
        "print(onehot_vectors)"
      ],
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        "id": "iAv1SONQFc8U",
        "outputId": "9f4e7933-6d2f-4a47-8cb2-0513e1195396"
      },
      "execution_count": 25,
      "outputs": [
        {
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          "name": "stdout",
          "text": [
            "[[0 0 0 1 0 0 0 0 0 0]\n",
            " [0 1 0 0 0 0 0 0 0 0]\n",
            " [0 0 0 0 0 0 1 0 0 0]\n",
            " [0 0 0 0 0 0 0 1 0 0]\n",
            " [0 0 1 0 0 0 0 0 0 0]\n",
            " [0 0 0 0 0 1 0 0 0 0]\n",
            " [0 0 0 0 0 0 0 0 0 1]\n",
            " [0 0 0 0 1 0 0 0 0 0]\n",
            " [0 0 0 0 0 0 0 0 1 0]\n",
            " [1 0 0 0 0 0 0 0 0 0]]\n"
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    {
      "cell_type": "code",
      "source": [
        "df=pd.DataFrame(onehot_vectors, columns=vocab)\n",
        "df[df == 0] = ''\n",
        "df "
      ],
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        "id": "Sx1qVHM3FpCj",
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      "execution_count": 26,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "  26. Jefferson Monticello Thomas age at began building of the\n",
              "0                               1                             \n",
              "1             1                                               \n",
              "2                                            1                \n",
              "3                                                     1       \n",
              "4                        1                                    \n",
              "5                                      1                      \n",
              "6                                                            1\n",
              "7                                   1                         \n",
              "8                                                        1    \n",
              "9   1                                                         "
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      "metadata": {
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}