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Pull doc fixes into version branch. #3944

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Merged
merged 3 commits into from
Apr 11, 2018
Merged

Pull doc fixes into version branch. #3944

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e69cb02
Touch-ups to eager's getting started guide:
akshayka Apr 4, 2018
e611001
Delete equivalence between step and learning rate; the two are differ…
akshayka Apr 4, 2018
d9fe76d
Update eager.ipynb
MarkDaoust Apr 5, 2018
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10 changes: 5 additions & 5 deletions samples/core/get_started/eager.ipynb
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"\n",
"Note: you can run **[this notebook, live in Google Colab](https://colab.research.google.com/github/tensorflow/models/blob/master/samples/core/get_started/eager.ipynb)** with zero setup.\n",
"\n",
"This tutorial describes how to use machine learning to *categorize* Iris flowers by species. It uses [TensorFlow](https://www.tensorflow.org)'s eager execution to 1. build a *model*, 2. *train* the model on example data, and 3. use the model to make *predictions* on unknown data. Machine Learning experience isn't required to follow this guide, but you'll need to read some Python code.\n",
"This tutorial describes how to use machine learning to *categorize* Iris flowers by species. It uses [TensorFlow](https://www.tensorflow.org)'s eager execution to (1) build a *model*, (2) *train* the model on example data, and (3) use the model to make *predictions* on unknown data. Machine learning experience isn't required to follow this guide, but you'll need to read some Python code.\n",
"\n",
"## TensorFlow programming\n",
"\n",
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"source": [
"### Install the latest version of TensorFlow\n",
"\n",
"This tutorial uses eager execution features available in [TensorFlow 1.7](https://www.tensorflow.org/install/). (You may need to restart the runtime after upgrading.)"
"This tutorial uses eager execution, which is available in [TensorFlow 1.7](https://www.tensorflow.org/install/). (You may need to restart the runtime after upgrading.)"
]
},
{
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"source": [
"### Create an optimizer\n",
"\n",
"An *[optimizer](https://developers.google.com/machine-learning/crash-course/glossary#optimizer)* applies the computed gradients to the model's variables to minimize the `loss` function. You can think of a curved surface (see Figure 3) and we want to find its lowest point by walking around. The gradients point in the direction of steepest the ascent—so we'll travel the opposite way and move down the hill. By iteratively calculating the loss and gradients for each *step* (or *[learning rate](https://developers.google.com/machine-learning/crash-course/glossary#learning_rate)*), we'll adjust the model during training. Gradually, the model will find the best combination of weights and bias to minimize loss. And the lower the loss, the better the model's predictions.\n",
"An *[optimizer](https://developers.google.com/machine-learning/crash-course/glossary#optimizer)* applies the computed gradients to the model's variables to minimize the `loss` function. You can think of a curved surface (see Figure 3) and we want to find its lowest point by walking around. The gradients point in the direction of steepest ascent—so we'll travel the opposite way and move down the hill. By iteratively calculating the loss and gradient for each batch, we'll adjust the model during training. Gradually, the model will find the best combination of weights and bias to minimize loss. And the lower the loss, the better the model's predictions.\n",
"\n",
"<table>\n",
" <tr><td>\n",
Expand All @@ -546,7 +546,7 @@
" </td></tr>\n",
"</table>\n",
"\n",
"TensorFlow has many [optimization algorithms](https://www.tensorflow.org/api_guides/python/train) available for training. This model uses the [tf.train.GradientDescentOptimizer](https://www.tensorflow.org/api_docs/python/tf/train/GradientDescentOptimizer) that implements the *[standard gradient descent](https://developers.google.com/machine-learning/crash-course/glossary#gradient_descent)* (SGD) algorithm. The `learning_rate` sets the step size to take for each iteration down the hill. This is a *hyperparameter* that you'll commonly adjust to achieve better results."
"TensorFlow has many [optimization algorithms](https://www.tensorflow.org/api_guides/python/train) available for training. This model uses the [tf.train.GradientDescentOptimizer](https://www.tensorflow.org/api_docs/python/tf/train/GradientDescentOptimizer) that implements the *[stochastic gradient descent](https://developers.google.com/machine-learning/crash-course/glossary#gradient_descent)* (SGD) algorithm. The `learning_rate` sets the step size to take for each iteration down the hill. This is a *hyperparameter* that you'll commonly adjust to achieve better results."
]
},
{
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]
}
]
}
}