linearregression.ipynb

{
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  "nbformat_minor": 0,
  "metadata": {
    "colab": {
      "provenance": [],
      "authorship_tag": "ABX9TyOt9mmCjuVa92chjWR0xj+z",
      "include_colab_link": true
    },
    "kernelspec": {
      "name": "python3",
      "display_name": "Python 3"
    },
    "language_info": {
      "name": "python"
    }
  },
  "cells": [
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "view-in-github",
        "colab_type": "text"
      },
      "source": [
        "<a href=\"https://colab.research.google.com/github/rach-horsman/skills-introduction-to-github/blob/main/linearregression.ipynb\" target=\"_parent\"><img src=\"https://colab.research.google.com/assets/colab-badge.svg\" alt=\"Open In Colab\"/></a>"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "id": "TqxPZ5WaerYg"
      },
      "outputs": [],
      "source": []
    },
    {
      "cell_type": "code",
      "source": [
        "#import relevant libraries\n",
        "import tensorflow as tf\n",
        "import numpy as np\n",
        "from tensorflow import keras\n",
        "\n",
        "#set up neural network, one layer with one node\n",
        "model = tf.keras.Sequential([keras.layers.Dense(units=1, input_shape=[1])])\n",
        "\n",
        "#choos optimiser and loss functions and compile\n",
        "model.compile(optimizer='sgd', loss='mean_squared_error')\n",
        "\n",
        "#training data input\n",
        "xs = np.array([-1.0, 0.0, 1.0, 2.0, 3.0, 4.0], dtype=float)\n",
        "ys = np.array([-2.0, 1.0, 4.0, 7.0, 10.0, 13.0], dtype=float)\n",
        "\n",
        "#train\n",
        "model.fit(xs, ys, epochs=500)\n",
        "\n",
        "#test\n",
        "print(model.predict([10.0]))\n"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "9d4JPxSgeuTo",
        "outputId": "a1ecc5bc-4bc6-47b8-e10e-18ba1f48d11e"
      },
      "execution_count": 1,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "Epoch 1/500\n",
            "1/1 [==============================] - 1s 732ms/step - loss: 81.9386\n",
            "Epoch 2/500\n",
            "1/1 [==============================] - 0s 14ms/step - loss: 64.4685\n",
            "Epoch 3/500\n",
            "1/1 [==============================] - 0s 11ms/step - loss: 50.7237\n",
            "Epoch 4/500\n",
            "1/1 [==============================] - 0s 12ms/step - loss: 39.9100\n",
            "Epoch 5/500\n",
            "1/1 [==============================] - 0s 14ms/step - loss: 31.4022\n",
            "Epoch 6/500\n",
            "1/1 [==============================] - 0s 11ms/step - loss: 24.7086\n",
            "Epoch 7/500\n",
            "1/1 [==============================] - 0s 13ms/step - loss: 19.4424\n",
            "Epoch 8/500\n",
            "1/1 [==============================] - 0s 11ms/step - loss: 15.2991\n",
            "Epoch 9/500\n",
            "1/1 [==============================] - 0s 13ms/step - loss: 12.0393\n",
            "Epoch 10/500\n",
            "1/1 [==============================] - 0s 16ms/step - loss: 9.4746\n",
            "Epoch 11/500\n",
            "1/1 [==============================] - 0s 15ms/step - loss: 7.4567\n",
            "Epoch 12/500\n",
            "1/1 [==============================] - 0s 17ms/step - loss: 5.8691\n",
            "Epoch 13/500\n",
            "1/1 [==============================] - 0s 13ms/step - loss: 4.6201\n",
            "Epoch 14/500\n",
            "1/1 [==============================] - 0s 14ms/step - loss: 3.6373\n",
            "Epoch 15/500\n",
            "1/1 [==============================] - 0s 14ms/step - loss: 2.8640\n",
            "Epoch 16/500\n",
            "1/1 [==============================] - 0s 13ms/step - loss: 2.2556\n",
            "Epoch 17/500\n",
            "1/1 [==============================] - 0s 12ms/step - loss: 1.7769\n",
            "Epoch 18/500\n",
            "1/1 [==============================] - 0s 12ms/step - loss: 1.4002\n",
            "Epoch 19/500\n",
            "1/1 [==============================] - 0s 13ms/step - loss: 1.1038\n",
            "Epoch 20/500\n",
            "1/1 [==============================] - 0s 13ms/step - loss: 0.8706\n",
            "Epoch 21/500\n",
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            "Epoch 22/500\n",
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            "Epoch 23/500\n",
            "1/1 [==============================] - 0s 12ms/step - loss: 0.4289\n",
            "Epoch 24/500\n",
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            "Epoch 25/500\n",
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            "Epoch 26/500\n",
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            "Epoch 27/500\n",
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            "Epoch 28/500\n",
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            "Epoch 31/500\n",
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            "1/1 [==============================] - 0s 12ms/step - loss: 3.9469e-06\n",
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            "1/1 [==============================] - 0s 9ms/step - loss: 3.7086e-06\n",
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            "1/1 [==============================] - 0s 10ms/step - loss: 3.6325e-06\n",
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            "1/1 [==============================] - 0s 11ms/step - loss: 3.4135e-06\n",
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            "1/1 [==============================] - 0s 15ms/step - loss: 3.2748e-06\n",
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            "1/1 [==============================] - 0s 10ms/step - loss: 3.2071e-06\n",
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            "1/1 [==============================] - 0s 9ms/step - loss: 3.0138e-06\n",
            "Epoch 416/500\n",
            "1/1 [==============================] - 0s 9ms/step - loss: 2.9520e-06\n",
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            "1/1 [==============================] - 0s 9ms/step - loss: 2.8912e-06\n",
            "Epoch 418/500\n",
            "1/1 [==============================] - 0s 9ms/step - loss: 2.8319e-06\n",
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            "1/1 [==============================] - 0s 9ms/step - loss: 2.7739e-06\n",
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            "1/1 [==============================] - 0s 10ms/step - loss: 2.7168e-06\n",
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            "1/1 [==============================] - 0s 9ms/step - loss: 2.6612e-06\n",
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            "1/1 [==============================] - 0s 9ms/step - loss: 2.6067e-06\n",
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            "1/1 [==============================] - 0s 9ms/step - loss: 2.5532e-06\n",
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            "1/1 [==============================] - 0s 9ms/step - loss: 2.5007e-06\n",
            "Epoch 425/500\n",
            "1/1 [==============================] - 0s 9ms/step - loss: 2.4494e-06\n",
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            "1/1 [==============================] - 0s 10ms/step - loss: 2.3991e-06\n",
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            "1/1 [==============================] - 0s 9ms/step - loss: 2.3496e-06\n",
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            "1/1 [==============================] - 0s 10ms/step - loss: 2.3014e-06\n",
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            "1/1 [==============================] - 0s 10ms/step - loss: 2.2541e-06\n",
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            "1/1 [==============================] - 0s 14ms/step - loss: 2.2078e-06\n",
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            "1/1 [==============================] - 0s 13ms/step - loss: 2.1625e-06\n",
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            "1/1 [==============================] - 0s 14ms/step - loss: 2.1181e-06\n",
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            "1/1 [==============================] - 0s 15ms/step - loss: 2.0745e-06\n",
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            "1/1 [==============================] - 0s 12ms/step - loss: 2.0319e-06\n",
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            "1/1 [==============================] - 0s 12ms/step - loss: 1.9902e-06\n",
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            "1/1 [==============================] - 0s 13ms/step - loss: 1.9494e-06\n",
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            "1/1 [==============================] - 0s 11ms/step - loss: 1.9094e-06\n",
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            "1/1 [==============================] - 0s 13ms/step - loss: 1.8703e-06\n",
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            "1/1 [==============================] - 0s 19ms/step - loss: 1.8318e-06\n",
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            "1/1 [==============================] - 0s 12ms/step - loss: 1.7940e-06\n",
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            "1/1 [==============================] - 0s 11ms/step - loss: 1.7571e-06\n",
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            "1/1 [==============================] - 0s 11ms/step - loss: 1.7212e-06\n",
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            "1/1 [==============================] - 0s 10ms/step - loss: 1.6860e-06\n",
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            "1/1 [==============================] - 0s 11ms/step - loss: 1.6512e-06\n",
            "Epoch 445/500\n",
            "1/1 [==============================] - 0s 11ms/step - loss: 1.6174e-06\n",
            "Epoch 446/500\n",
            "1/1 [==============================] - 0s 10ms/step - loss: 1.5841e-06\n",
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            "1/1 [==============================] - 0s 10ms/step - loss: 1.5518e-06\n",
            "Epoch 448/500\n",
            "1/1 [==============================] - 0s 12ms/step - loss: 1.5200e-06\n",
            "Epoch 449/500\n",
            "1/1 [==============================] - 0s 19ms/step - loss: 1.4886e-06\n",
            "Epoch 450/500\n",
            "1/1 [==============================] - 0s 28ms/step - loss: 1.4580e-06\n",
            "Epoch 451/500\n",
            "1/1 [==============================] - 0s 18ms/step - loss: 1.4283e-06\n",
            "Epoch 452/500\n",
            "1/1 [==============================] - 0s 23ms/step - loss: 1.3990e-06\n",
            "Epoch 453/500\n",
            "1/1 [==============================] - 0s 19ms/step - loss: 1.3702e-06\n",
            "Epoch 454/500\n",
            "1/1 [==============================] - 0s 12ms/step - loss: 1.3420e-06\n",
            "Epoch 455/500\n",
            "1/1 [==============================] - 0s 14ms/step - loss: 1.3145e-06\n",
            "Epoch 456/500\n",
            "1/1 [==============================] - 0s 13ms/step - loss: 1.2874e-06\n",
            "Epoch 457/500\n",
            "1/1 [==============================] - 0s 14ms/step - loss: 1.2609e-06\n",
            "Epoch 458/500\n",
            "1/1 [==============================] - 0s 15ms/step - loss: 1.2349e-06\n",
            "Epoch 459/500\n",
            "1/1 [==============================] - 0s 14ms/step - loss: 1.2097e-06\n",
            "Epoch 460/500\n",
            "1/1 [==============================] - 0s 15ms/step - loss: 1.1849e-06\n",
            "Epoch 461/500\n",
            "1/1 [==============================] - 0s 14ms/step - loss: 1.1606e-06\n",
            "Epoch 462/500\n",
            "1/1 [==============================] - 0s 14ms/step - loss: 1.1367e-06\n",
            "Epoch 463/500\n",
            "1/1 [==============================] - 0s 14ms/step - loss: 1.1133e-06\n",
            "Epoch 464/500\n",
            "1/1 [==============================] - 0s 12ms/step - loss: 1.0906e-06\n",
            "Epoch 465/500\n",
            "1/1 [==============================] - 0s 12ms/step - loss: 1.0681e-06\n",
            "Epoch 466/500\n",
            "1/1 [==============================] - 0s 15ms/step - loss: 1.0462e-06\n",
            "Epoch 467/500\n",
            "1/1 [==============================] - 0s 15ms/step - loss: 1.0249e-06\n",
            "Epoch 468/500\n",
            "1/1 [==============================] - 0s 9ms/step - loss: 1.0037e-06\n",
            "Epoch 469/500\n",
            "1/1 [==============================] - 0s 13ms/step - loss: 9.8320e-07\n",
            "Epoch 470/500\n",
            "1/1 [==============================] - 0s 16ms/step - loss: 9.6287e-07\n",
            "Epoch 471/500\n",
            "1/1 [==============================] - 0s 17ms/step - loss: 9.4307e-07\n",
            "Epoch 472/500\n",
            "1/1 [==============================] - 0s 13ms/step - loss: 9.2373e-07\n",
            "Epoch 473/500\n",
            "1/1 [==============================] - 0s 14ms/step - loss: 9.0490e-07\n",
            "Epoch 474/500\n",
            "1/1 [==============================] - 0s 15ms/step - loss: 8.8621e-07\n",
            "Epoch 475/500\n",
            "1/1 [==============================] - 0s 11ms/step - loss: 8.6804e-07\n",
            "Epoch 476/500\n",
            "1/1 [==============================] - 0s 15ms/step - loss: 8.5018e-07\n",
            "Epoch 477/500\n",
            "1/1 [==============================] - 0s 17ms/step - loss: 8.3269e-07\n",
            "Epoch 478/500\n",
            "1/1 [==============================] - 0s 22ms/step - loss: 8.1561e-07\n",
            "Epoch 479/500\n",
            "1/1 [==============================] - 0s 11ms/step - loss: 7.9883e-07\n",
            "Epoch 480/500\n",
            "1/1 [==============================] - 0s 19ms/step - loss: 7.8235e-07\n",
            "Epoch 481/500\n",
            "1/1 [==============================] - 0s 14ms/step - loss: 7.6646e-07\n",
            "Epoch 482/500\n",
            "1/1 [==============================] - 0s 15ms/step - loss: 7.5072e-07\n",
            "Epoch 483/500\n",
            "1/1 [==============================] - 0s 15ms/step - loss: 7.3540e-07\n",
            "Epoch 484/500\n",
            "1/1 [==============================] - 0s 14ms/step - loss: 7.2028e-07\n",
            "Epoch 485/500\n",
            "1/1 [==============================] - 0s 14ms/step - loss: 7.0548e-07\n",
            "Epoch 486/500\n",
            "1/1 [==============================] - 0s 13ms/step - loss: 6.9100e-07\n",
            "Epoch 487/500\n",
            "1/1 [==============================] - 0s 13ms/step - loss: 6.7697e-07\n",
            "Epoch 488/500\n",
            "1/1 [==============================] - 0s 17ms/step - loss: 6.6314e-07\n",
            "Epoch 489/500\n",
            "1/1 [==============================] - 0s 11ms/step - loss: 6.4949e-07\n",
            "Epoch 490/500\n",
            "1/1 [==============================] - 0s 13ms/step - loss: 6.3631e-07\n",
            "Epoch 491/500\n",
            "1/1 [==============================] - 0s 13ms/step - loss: 6.2315e-07\n",
            "Epoch 492/500\n",
            "1/1 [==============================] - 0s 13ms/step - loss: 6.1024e-07\n",
            "Epoch 493/500\n",
            "1/1 [==============================] - 0s 13ms/step - loss: 5.9765e-07\n",
            "Epoch 494/500\n",
            "1/1 [==============================] - 0s 14ms/step - loss: 5.8533e-07\n",
            "Epoch 495/500\n",
            "1/1 [==============================] - 0s 13ms/step - loss: 5.7329e-07\n",
            "Epoch 496/500\n",
            "1/1 [==============================] - 0s 11ms/step - loss: 5.6153e-07\n",
            "Epoch 497/500\n",
            "1/1 [==============================] - 0s 13ms/step - loss: 5.5002e-07\n",
            "Epoch 498/500\n",
            "1/1 [==============================] - 0s 15ms/step - loss: 5.3879e-07\n",
            "Epoch 499/500\n",
            "1/1 [==============================] - 0s 15ms/step - loss: 5.2766e-07\n",
            "Epoch 500/500\n",
            "1/1 [==============================] - 0s 13ms/step - loss: 5.1678e-07\n",
            "1/1 [==============================] - 0s 228ms/step\n",
            "[[30.997902]]\n"
          ]
        }
      ]
    }
  ]
}