updating to the reviewers comments on images

README.md

 
 # Table of Contents
 
-1.  [CSEDU-2019](#orgb59b3f5)
-    1.  [Images](#orgd2afa9b)
+1.  [CSEDU-2019](#org14dd6bb)
+    1.  [Images](#org21e760d)
 
 
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+<a id="org14dd6bb"></a>
 
 # CSEDU-2019
 
 Resources and annexes to the paper **"[Towards Visual Explorations of Forums' Collective Dynamics in Learning Management Systems](tex_draft.pdf)"**
 
 
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 ## Images
 
@@ -26,13 +26,13 @@ The images in the paper are sometime small.  We offer high enough resolution ima
 
 2.  Figure 2
 
-    ![img](images/fu.png)
+    ![img](images/fu2.png)
     
     iForum's Dashboard \citep{Fu2017} showing (a) overall changes of post in the forum, (b) a thread representation, (c) discussions in packed forms, (d) the social network and (e) the details of a discussion.
 
 3.  Figure 3
 
-    ![img](images/convis.png)
+    ![img](images/convis2.png)
     
     Convis Dashboard \citep{Hoque2016} helps explore conversations.  On the left, the topics found in the forum using \gls{lda} and organized hierarchically.  In the middle, the colored rectangles show a sentiment analysis for each message.  Each message is linked to his author place on a semi-circle and thus creating a social network.  Finally, on the right, Convis display the detail of the conversation.
 

README.org

@@ -8,12 +8,12 @@ Resources and annexes to the paper *"[[file:tex_draft.pdf][Towards Visual Explor
  Illustration of how the strength of actors' ties (or links) varies as a function of time and topic overlap.  Thread 1 corresponds to actor-topic dynamic (\ref{eq:1a}) where B's late post after A's 1st publication does not correlate strongly enough to create the link from A to B.  But A's 2nd post is timely enough, although not exactly on the same topic as B's message, to create the tie A --> B drawn as a dashed arrow.  In thread 2, in addition to the tie B --> A, we have a topic overlap and time proximity between C and A.  This makes a the strong tie A \to C.
 
 **** Figure 2
-[[file:images/fu.png]]
+[[file:images/fu2.png]]
 
    iForum's Dashboard \citep{Fu2017} showing (a) overall changes of post in the forum, (b) a thread representation, (c) discussions in packed forms, (d) the social network and (e) the details of a discussion.
 
 **** Figure 3
-[[file:images/convis.png]]
+[[file:images/convis2.png]]
 
    Convis Dashboard \citep{Hoque2016} helps explore conversations.  On the left, the topics found in the forum using \gls{lda} and organized hierarchically.  In the middle, the colored rectangles show a sentiment analysis for each message.  Each message is linked to his author place on a semi-circle and thus creating a social network.  Finally, on the right, Convis display the detail of the conversation.