TensorFlow--系列1入门

1 Mac系统安装及测试--Installing with Virtualenv

1  安装步骤：
安装pip
pip安装Virtualenv
安装python(选择版本)，创建Virtualenv运行环境
激活Virtualenv环境，安装TensorFlow

启动和关闭:
$ cd targetDirectory
$ source ./bin/activate      # If using bash, sh, ksh, or zsh
$ source ./bin/activate.csh  # If using csh or tcsh 

 (targetDirectory)$ deactivate 

2 TensorFlow使用入门

2.1 The programming stack

tensorflow_programming_environment.png

demo测试:
git clone https://github.com/tensorflow/models
cd models/samples/core/get_started/
python premade_estimator.py

如果未报错，说明安装成功。

2.2To write a TensorFlow program based on pre-made Estimators, you must perform the following tasks:

-1 Create one or more input functions.
-2 Define the model's feature columns.
-3 Instantiate an Estimator, specifying the feature columns and various hyperparameters.
-4 Call one or more methods on the Estimator object, passing the     appropriate input function as the source of the data.

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TensorFlow运行MINST例子: