From 44282372033266c9a9b73a6fa45bdef2f93a3958 Mon Sep 17 00:00:00 2001
From: jiangzhonglian <jiang-s@163.com>
Date: Tue, 29 Aug 2017 18:06:20 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E6=B3=A8=E9=87=8A=EF=BC=8C?=
 =?UTF-8?q?=E6=B7=BB=E5=8A=A0=201988=20=E7=9A=84=E9=93=BE=E6=8E=A5?=
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---
 docs/13.利用PCA来简化数据.md | 6 +++---
 src/python/13.PCA/pca.py     | 4 ++--
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/docs/13.利用PCA来简化数据.md b/docs/13.利用PCA来简化数据.md
index d2cafe3a..1cfe4547 100644
--- a/docs/13.利用PCA来简化数据.md
+++ b/docs/13.利用PCA来简化数据.md
@@ -140,8 +140,8 @@ def pca(dataMat, topNfeat=9999999):
         dataMat   原数据集矩阵
         topNfeat  应用的N个特征
     Returns:
-        lowDDataMat
-        reconMat
+        lowDDataMat  降维后数据集
+        reconMat     新的数据集空间
     """
 
     # 计算每一列的均值
@@ -215,6 +215,6 @@ def pca(dataMat, topNfeat=9999999):
 
 * * *
 
-* **作者：[片刻](http://www.apache.wiki/display/~jiangzhonglian)**
+* **作者：[片刻](http://www.apache.wiki/display/~jiangzhonglian) [1988](http://www.apache.wiki/display/~lihuisong)**
 * [GitHub地址](https://github.com/apachecn/MachineLearning): <https://github.com/apachecn/MachineLearning>
 * **版权声明：欢迎转载学习 => 请标注信息来源于 [ApacheCN](http://www.apachecn.org/)**
diff --git a/src/python/13.PCA/pca.py b/src/python/13.PCA/pca.py
index 7be767ef..92568070 100644
--- a/src/python/13.PCA/pca.py
+++ b/src/python/13.PCA/pca.py
@@ -26,8 +26,8 @@ def pca(dataMat, topNfeat=9999999):
         dataMat   原数据集矩阵
         topNfeat  应用的N个特征
     Returns:
-        lowDDataMat
-        reconMat
+        lowDDataMat  降维后数据集
+        reconMat     新的数据集空间
     """
 
     # 计算每一列的均值