[Defence] Continue slides

defense/slides.md

@@ -39,6 +39,11 @@ apply the insights to less open systems
 
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+<img src="images/editors-rise-decline.png" height="500" alt="Rise and decline in numbers of editors on EN Wikipedia">
+<small>Source: Halfaker et al. "The Rise and Decline of an Open Collaboration System: How Wikipedia’s reaction to popularity is causing its decline"</small>
+
+---
+
 ## Research questions
 
 Q1: What is the role of edit filters among existing algorithmic quality-control
@@ -71,6 +76,17 @@ number, etc.)?
 
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+## What is an edit filter
+
+* MediaWiki extension
+* regex based filtering of edits and other actions (e.g. account creation, page deletion or move, upload)
+* triggers *before* an edit is published
+* different actions can be defined
+
+TODO: Screenshots?
+
+---
+
 ## Q1: What is the role of edit filters among existing algorithmic quality-control mechanisms on Wikipedia (bots, semi-automated tools, ORES, humans)?
 
 * 1st mechanism activated to control quality (at the beginning of the funnel)
@@ -82,6 +98,10 @@ number, etc.)?
 * people fed up with bot introduction and development processes (poor quality, no tests, no
   code available for revision in case of problems) (so came up with a new approach)
 * filter allow more easily for collaboration
+* disallow certain types of obvious pervasive (perhaps automated) vandalism directly
+* takes more than a single click to revert
+* human editors can use their time more productively elsewhere
+
 
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@@ -196,9 +216,6 @@ These slides are licensed under the [CC BY-SA 4.0 License](https://creativecommo
 
 OLD
 
-<img src="images/editors-rise-decline.png" height="500" alt="Rise and decline in numbers of editors on EN Wikipedia">
-<small>Source: Halfaker et al. "The Rise and Decline of an Open Collaboration System: How Wikipedia’s reaction to popularity is causing its decline"</small>
-
 ---
 
 # Motivation