From bc039b890860a32c46609d4ebad8206c7dde6543 Mon Sep 17 00:00:00 2001
From: Yue Zhao <yuezhao@cs.toronto.edu>
Date: Fri, 30 Nov 2018 18:29:13 -0500
Subject: [PATCH] update documentation (wip)

---
 README.rst | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/README.rst b/README.rst
index bd308f2ac..39a72a758 100644
--- a/README.rst
+++ b/README.rst
@@ -123,9 +123,9 @@ PyOD toolkit consists of three major groups of functionalities:
 ===================  ================  =====================================================================================================  =====  ========================================  ====================================================================================================
 Type                 Abbr              Algorithm                                                                                              Year   Ref                                       Materials
 ===================  ================  =====================================================================================================  =====  ========================================  ====================================================================================================
-Linear Model         PCA               Principal Component Analysis (the sum of weighted projected distances to the eigenvector hyperplanes)  2003   [#Shyu2003A]_                             `[PDF] <http://projects.laas.fr/METROSEC/DOC/FDM03.pdf>`_
-Linear Model         MCD               Minimum Covariance Determinant (use the mahalanobis distances as the outlier scores)                   1999   [#Hardin2004Outlier]_ [#Rousseeuw1999A]_  `[PDF] <http://dmrocke.ucdavis.edu/papers/HardinRocke2004.pdf>`_
-Linear Model         OCSVM             One-Class Support Vector Machines                                                                      2003   [#Ma2003Time]_                            `[PDF] <http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.653.2440&rep=rep1&type=pdf>`_
+Linear Model         PCA               Principal Component Analysis (the sum of weighted projected distances to the eigenvector hyperplanes)  2003   [#Shyu2003A]_                             `[PDFa] <http://projects.laas.fr/METROSEC/DOC/FDM03.pdf>`_
+Linear Model         MCD               Minimum Covariance Determinant (use the mahalanobis distances as the outlier scores)                   1999   [#Hardin2004Outlier]_ [#Rousseeuw1999A]_  `[PDFb] <http://dmrocke.ucdavis.edu/papers/HardinRocke2004.pdf>`_
+Linear Model         OCSVM             One-Class Support Vector Machines                                                                      2003   [#Ma2003Time]_                            `[PDFc] <http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.653.2440&rep=rep1&type=pdf>`_
 Proximity-Based      LOF               Local Outlier Factor                                                                                   2000   [#Breunig2000LOF]_
 Proximity-Based      CBLOF             Clustering-Based Local Outlier Factor                                                                  2003   [#He2003Discovering]_
 Proximity-Based      HBOS              Histogram-based Outlier Score                                                                          2012   [#Goldstein2012Histogram]_