diff --git a/research-group-presi/slides-2nd.md b/research-group-presi/slides-2nd.md
new file mode 100644
index 0000000000000000000000000000000000000000..83db65a2d8c9cb6f196d1bead0ef869fc9b86fdf
--- /dev/null
+++ b/research-group-presi/slides-2nd.md
@@ -0,0 +1,215 @@
+% You shall not publish: Edit filters on EN Wikipedia
+% HCC Research Group Meeting June 2019
+% Lusy
+
+---
+
+* Signpost
+* overview over the presi so people can follow more easily
+* Motivation: why do we want to study this: confluence questions
+* funnel diagramm without filters: explain state of scientific literature on it
+* key findings (high level)
+* data analysis: what of this is really relevant
+
+---
+
+## Edit filter, an example
+
+<img src="images/Screenshot-trigger-disallow.png" class="stretch" height="500" alt="screenshot-filter-disallow-message">
+
+---
+
+# Motivation
+
+What are edit filters?
+Why are there edit filters?
+What task(s) do they take care of?
+How are they different from other existing mechanisms?
+What is their role in Wikipedia's complex socio-technical system?
+
+---
+
+> "The edit filter is a tool that allows editors in the *edit filter manager* group to set controls mainly to address common patterns of harmful editing."
+
+<small>[https://en.wikipedia.org/wiki/Wikipedia:Edit_filter](https://en.wikipedia.org/wiki/Wikipedia:Edit_filter)</small>
+
+---
+
+<img src="images/funnel-diagramm-no-filters.JPG" alt="Funnel diagramm of all vandal fighting mechanisms (no filters)">
+
+One thing is ostentatiously missing: edit filters
+
+---
+
+# Data
+
+* wikipedia's pages (policies, guidelines, etc.)
+* abuse filter extension tables
+
+---
+
+# Descriptive Overview. What is an edit filter?
+
+---
+
+<img src="images/detailed-page-filter249.png" alt="Details page of Filter #249">
+
+---
+
+* MediaWiki Extension
+* regex based filtering
+
+---
+
+## Motivations for introducing the abuse filter extention
+
+From [https://en.wikipedia.org/wiki/Wikipedia_talk:Edit_filter/Archive_1](https://en.wikipedia.org/wiki/Wikipedia_talk:Edit_filter/Archive_1):
+
+* 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
+
+---
+
+## Collaboration bots-filters
+
+* MrZ Bot puts editors found on the abuse log often on the AIV noticeboard
+* "There is a bot reporting users tripping certain filters at WP:AIV and WP:UAA; you can specify the filters here:" [https://en.wikipedia.org/wiki/User:DatBot/filters](https://en.wikipedia.org/wiki/User:DatBot/filters)
+
+---
+
+## Timeline
+
+ Oct 2001 : automatically import entries from Easton’s Bible Dictionary by a script
+ 29 Mar 2002 : First version of https://en.wikipedia.org/wiki/Wikipedia:Vandalism (WP Vandalism is published)
+ Oct 2002 : RamBot
+ 2006 : BAG was first formed
+ 13 Mar 2006 : 1st version of Bots/Requests for approval is published: some basic requirements (also valid today) are recorded
+ 28 Jul 2006 : VoABot II ("In the case were banned users continue to use sockpuppet accounts/IPs to add edits clearly rejected by consensus to the point were long term protection is required, VoABot may be programmed to watch those pages and revert those edits instead. Such edits are considered blacklisted. IP ranges can also be blacklisted. This is reserved only for special cases.")
+ 21 Jan 2007 : Twinkle Page is first published (empty), filled with a basic description by beginings of Feb 2007
+ 24 Jul 2007 : Request for Approval of original ClueBot
+ 16 Jan 2008 : Huggle Page is first published (empty)
+ 18 Jan 2008 : Huggle Page is first filled with content
+ 23 Jun 2008 : 1st version of Edit Filter page is published: User:Werdna announces they're currently developing the extention
+ 2 Oct 2008 : https://en.wikipedia.org/wiki/Wikipedia_talk:Edit_filter was first archived; its last topic was the voting for/against the extention which seemed to have ended end of Sep 2008
+ Jun 2010 : STiki initial release
+ 20 Oct 2010 : ClueBot NG page is created
+ 11 Jan 2015 : 1st commit to github ORES repository
+ 30 Nov 2015 : ORES paper is published
+
+---
+
+<img src="images/funnel-diagramm-with-filters.JPG" alt="Funnel diagramm of all vandal fighting mechanisms (with filters)">
+
+---
+
+## State of the Art on EN Wikipedia
+
+---
+
+## What do most active filters do?
+
+ 135 repeating characters & tag, warn
+ 30 "large deletion from article by new editors" & tag, warn
+ 61 "new user removing references" ("new user" is handled by "!("confirmed" in user\_groups)") & tag
+ 18 "test type edits from clicking on edit bar" (people don't replace Example texts when click-editing) & deleted in Feb 2012
+ 3 "new user blanking articles" & tag, warn
+ 172 "section blanking" & tag
+ 50 "shouting" (contribution consists of all caps, numbers and punctuation) & tag, warn
+ 98 "creating very short new article" & tag
+ 65 "excessive whitespace" (note: "associated with ascii art and some types of vandalism") & deleted in Jan 2010
+ 132 "removal of all categories" & tag, warn
+
+---
+
+## Descriptive statistics
+
+<img src="images/general_stats.png" class="left" alt="General filter statistics">
+
+ all filters: 954
+ public filters: 361
+ Active public filters: 110
+ disabled (but not deleted) public filters: 35
+ deleted public filters: 216
+ hidden filters: 593
+ active hidden filters: 91
+ disabled (but not deleted) hidden filters: 118
+ deleted hidden filters: 384
+
+---
+
+Number of filter hits per month March 2009-March 2019
+
+<img src="images/number-filter-hits.png" alt="Number of filter hits per month">
+
+---
+
+Filters Actions
+
+<img src="images/all-filters-actions.png" alt="Filters Actions of all Filters">
+
+---
+
+Active Public Filters Actions
+
+<img src="images/active-public-filters-actions.png" alt="Filters actions of active public filters">
+
+---
+
+Active Hidden Filters Actions
+
+<img src="images/active-hidden-filters-actions.png" alt="Filters actions of active hidden filters">
+
+---
+
+## Manual classification
+
+*vandalism*, *good faith* and *maintenance*
+
+---
+
+# Next steps for finishing the thesis
+
+* abuse_filter_history table (open MR, ping Aaron)
+
+---
+
+# Beyond the thesis
+
+* What are the differences between how filters are governed on EN Wikipedia compared to other language versions?
+* Are there filters targetting harassment?
+* Ethnographic analysis (e.g. IVs with edit filter managers/admins/users whose edits have been disallowed would be really interesting)
+* (how) has the notion of "vandalism" on Wikipedia evolved over time (when looking at the regex patterns)
+
+---
+
+* Precision/Recall: False Positives? were filters shut down, bc they matched more False positives than they had real value?
+* Do filters work the desired way/help for a smoother Wikipedia service or is it a lot of work to maintain them and the usefulness is questionable?
+* What can we filter with a REGEX? And what not? Are regexes the suitable technology for the means the community is trying to achieve?
+
+---
+
+# Current Limitations
+
+* Only EN Wikipedia
+* manual filter classification only conducted by me
+
+---
+
+## Bigger picture: Upload filters
+
+<img src="images/Blackout_of_wikipediade_by_Wikimedia_Deutschland_-_March_2019.png" height="500" alt="blackout German Wikipedia March 2019">
+<small>[https://upload.wikimedia.org/wikipedia/commons/c/c5/Blackout_of_wikipedia.de_by_Wikimedia_Deutschland_-_March_2019.png](https://upload.wikimedia.org/wikipedia/commons/c/c5/Blackout_of_wikipedia.de_by_Wikimedia_Deutschland_-_March_2019.png)</small>
+
+---
+
+# Thank you!
+
+These slides are licensed under the [CC BY-SA 4.0 License](https://creativecommons.org/licenses/by-sa/4.0/).
+
+
+
+
+---
+
+# Questions? Comments? Thoughts?