update chinese catalog

Author: luotao1

cmake/FindSphinx.cmake

@@ -72,7 +72,7 @@ function( Sphinx_add_target target_name builder conf cache source destination )
     ${source}
     ${destination}
     COMMENT "Generating sphinx documentation: ${builder}"
-    COMMAND ln -s ${destination}/index_*.html ${destination}/index.html
+    COMMAND ln -sf ${destination}/index_*.html ${destination}/index.html
     )
 
   set_property(

doc/api/index_cn.rst

@@ -1,5 +1,5 @@
-API
-===
+API中文手册
+============
 
 DataProvider API
 ----------------

doc/getstarted/basic_usage/index_cn.rst

@@ -1,16 +1,16 @@
-简介
-====
+经典的线性回归任务
+==================
 
 PaddlePaddle是源于百度的一个深度学习平台。这份简短的介绍将向你展示如何利用PaddlePaddle来解决一个经典的线性回归问题。
 
-1. 一个经典的任务
------------------
+任务简介
+--------
 
 我们展示如何用PaddlePaddle解决 `单变量的线性回归 <https://www.baidu.com/s?wd=单变量线性回归>`_ 问题。线性回归的输入是一批点 `(x, y)` ，其中 `y = wx + b + ε`， 而 ε 是一个符合高斯分布的随机变量。线性回归的输出是从这批点估计出来的参数 `w` 和 `b` 。
 
 一个例子是房产估值。我们假设房产的价格（y）是其大小（x）的一个线性函数，那么我们可以通过收集市场上房子的大小和价格，用来估计线性函数的参数w 和 b。
 
-2. 准备数据
+准备数据
 -----------
 
 假设变量 `x` 和 `y` 的真实关系为： `y = 2x + 0.3 + ε`，这里展示如何使用观测数据来拟合这一线性关系。首先，Python代码将随机产生2000个观测点，作为线性回归的输入。下面脚本符合PaddlePaddle期待的读取数据的Python程序的模式。
@@ -28,7 +28,7 @@ PaddlePaddle是源于百度的一个深度学习平台。这份简短的介绍
             x = random.random()
             yield [x], [2*x+0.3]
 
-3. 训练模型
+训练模型
 -----------
 
 为了还原 `y = 2x + 0.3`，我们先从一条随机的直线 `y' = wx + b` 开始，然后利用观测数据调整 `w` 和 `b` 使得 `y'` 和 `y` 的差距不断减小，最终趋于接近。这个过程就是模型的训练过程，而 `w` 和 `b` 就是模型的参数，即我们的训练目标。
@@ -79,7 +79,7 @@ PaddlePaddle是源于百度的一个深度学习平台。这份简短的介绍
 
 PaddlePaddle将在观测数据集上迭代训练30轮，并将每轮的模型结果存放在 `./output` 路径下。从输出日志可以看到，随着轮数增加误差代价函数的输出在不断的减小，这意味着模型在训练数据上不断的改进，直到逼近真实解：` y = 2x + 0.3 `
 
-4. 模型检验
+模型检验
 -----------
 
 训练完成后，我们希望能够检验模型的好坏。一种常用的做法是用学习的模型对另外一组测试数据进行预测，评价预测的效果。在这个例子中，由于已经知道了真实答案，我们可以直接观察模型的参数是否符合预期来进行检验。
@@ -106,10 +106,3 @@ PaddlePaddle将每个模型参数作为一个numpy数组单独存为一个文件
 从图中可以看到，虽然 `w` 和 `b` 都使用随机值初始化，但在起初的几轮训练中它们都在快速逼近真实值，并且后续仍在不断改进，使得最终得到的模型几乎与真实模型一致。
 
 这样，我们用PaddlePaddle解决了单变量线性回归问题， 包括数据输入、模型训练和最后的结果验证。
-
-5. 推荐后续阅读
----------------
-
-- `安装/编译 <../build_and_install/index.html>`_ ：PaddlePaddle的安装与编译文档。
-- `快速入门 <../demo/quick_start/index.html>`_ ：使用商品评论分类任务，系统性的介绍如何一步步改进，最终得到产品级的深度模型。
-- `示例 <../demo/index.html>`_ ：各种实用案例，涵盖图像、文本、推荐等多个领域。

doc/getstarted/basic_usage/index_en.rst

@@ -1,15 +1,15 @@
-Basic Usage
-=============
+Simple Linear Regression
+========================
 
 PaddlePaddle is a deep learning platform open-sourced by Baidu. With PaddlePaddle, you can easily train a classic neural network within a couple lines of configuration, or you can build sophisticated models that provide state-of-the-art performance on difficult learning tasks like sentiment analysis, machine translation, image caption and so on.
 
-1. A Classic Problem
----------------------
+Problem Background
+------------------
 
 Now, to give you a hint of what using PaddlePaddle looks like, let's start with a fundamental learning problem - `simple linear regression <https://en.wikipedia.org/wiki/Simple_linear_regression>`_: you have observed a set of two-dimensional data points of ``X`` and ``Y``, where ``X`` is an explanatory variable and ``Y`` is corresponding dependent variable, and you want to recover the underlying correlation between ``X`` and ``Y``. Linear regression can be used in many practical scenarios. For example, ``X`` can be a variable about house size, and ``Y`` a variable about house price. You can build a model that captures relationship between them by observing real estate markets.
 
-2. Prepare the Data
---------------------
+Prepare the Data
+-----------------
 
 Suppose the true relationship can be characterized as ``Y = 2X + 0.3``, let's see how to recover this pattern only from observed data. Here is a piece of python code that feeds synthetic data to PaddlePaddle. The code is pretty self-explanatory, the only extra thing you need to add for PaddlePaddle is a definition of input data types.
 
@@ -26,8 +26,8 @@ Suppose the true relationship can be characterized as ``Y = 2X + 0.3``, let's se
                 x = random.random()
                 yield [x], [2*x+0.3]
 
-3. Train a NeuralNetwork
--------------------------
+Train a NeuralNetwork
+----------------------
 
 To recover this relationship between ``X`` and ``Y``, we use a neural network with one layer of linear activation units and a square error cost layer. Don't worry if you are not familiar with these terminologies, it's just saying that we are starting from a random line ``Y' = wX + b`` , then we gradually adapt ``w`` and ``b`` to minimize the difference between ``Y'`` and ``Y``. Here is what it looks like in PaddlePaddle:
 
@@ -73,8 +73,8 @@ Now that everything is ready, you can train the network with a simple command li
 This means that PaddlePaddle will train this network on the synthectic dataset for 30 passes, and save all the models under path ``./output``. You will see from the messages printed out during training phase that the model cost is decreasing as time goes by, which indicates we are getting a closer guess.
 
 
-4. Evaluate the Model
------------------------
+Evaluate the Model
+-------------------
 
 Usually, a different dataset that left out during training phase should be used to evalute the models. However, we are lucky enough to know the real answer: ``w=2, b=0.3``, thus a better option is to check out model parameters directly.
 

doc/getstarted/build_and_install/index_cn.rst

@@ -1,5 +1,5 @@
 编译与安装
-========================
+==========
 
 安装
 ++++
@@ -24,4 +24,4 @@ PaddlePaddle提供数个预编译的二进制来进行安装，包括Docker镜
 ..  toctree::
     :maxdepth: 1
 
-    cmake/build_from_source_cn.rst
+    cmake/build_from_source_cn.rst

doc/getstarted/index_cn.rst

@@ -1,4 +1,4 @@
-GET STARTED
+新手入门
 ============
 
 ..  toctree::