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How can Tensorflow be used with Estimators to explore the titanic data?
The titanic dataset can be explored using the estimator with Tensorflow by using the ‘head’ method, the ‘describe’ method, and the ‘shape’ method. The head method gives the first few rows of the dataset, and the describe method gives information about the dataset, such as column names, types, mean, variance, standard deviation and so on. The shape method gives the dimensions of the data.
Read More: What is TensorFlow and how Keras work with TensorFlow to create Neural Networks?
We will use the Keras Sequential API, which is helpful in building a sequential model that is used to work with a plain stack of layers, where every layer has exactly one input tensor and one output tensor.
A neural network that contains at least one layer is known as a convolutional layer. We can use the Convolutional Neural Network to build learning model.
TensorFlow Text contains collection of text related classes and ops that can be used with TensorFlow 2.0. The TensorFlow Text can be used to preprocess sequence modelling.
We are using the Google Colaboratory to run the below code. Google Colab or Colaboratory helps run Python code over the browser and requires zero configuration and free access to GPUs (Graphical Processing Units). Colaboratory has been built on top of Jupyter Notebook.
An Estimator is TensorFlow's high-level representation of a complete model. It is designed for easy scaling and asynchronous training.
We will train a logistic regression model using the tf.estimator API. The model is used as a baseline for other algorithms. We use the titanic dataset with the goal of predicting passenger survival, given characteristics such as gender, age, class, etc.
Example
print("Sample data is being displayed")
print(dftrain.head())
print("The metadata about data is being displayed")
print(dftrain.describe())
print("The dimensions of the data is being displayed")
print(dftrain.shape[0], dfeval.shape[0])Code credit −https://www.tensorflow.org/tutorials/estimator/linear
Output
Sample data is being displayed sex age n_siblings_spouses parch ... class deck embark_town alone 0 male 22.0 1 0 ... Third unknown Southampton n 1 female 38.0 1 0 ... First C Cherbourg n 2 female 26.0 0 0 ... Third unknown Southampton y 3 female 35.0 1 0 ... First C Southampton n 4 male 28.0 0 0 .. Third unknown Queenstown y [5 rows x 9 columns] The metadata about data is being displayed age n_siblings_spouses parch fare count 627.000000 627.000000 627.000000 627.000000 mean 29.631308 0.545455 0.379585 34.385399 std 12.511818 1.151090 0.792999 54.597730 min 0.750000 0.000000 0.000000 0.000000 25% 23.000000 0.000000 0.000000 7.895800 50% 28.000000 0.000000 0.000000 15.045800 75% 35.000000 1.000000 0.000000 31.387500 max 80.000000 8.000000 5.000000 512.329200 The dimensions of the data is being displayed 627 264
Explanation
Sample data of the titanic dataset is displayed on the console.
The describe method is used to provide metadata about the dataset.
The shape method gives the dimensions of the dataset.
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