### Feature column (tf.feature_column)

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#TensorFlow

A function that specifies how a model should interpret a particular feature. A list that collects the output returned by calls to such functions is a required parameter to all Estimators constructors.

The tf.feature_column functions enable models to easily experiment with different representations of input features. For details, see the Feature Columns chapter in the TensorFlow Programmers Guide.

"Feature column" is Google-specific terminology. A feature column is referred to as a "namespace" in the VW system (at Yahoo/Microsoft), or a field.