The September 2019 issue of the Wikimedia Research Newsletter is out: https://meta.wikimedia.org/wiki/Research:Newsletter/2019/September In this issue:

1 "Reducing Procrastination While Improving Performance: A Wiki-powered Experiment with Students"2 The Importance of Wikipedia in Assessing News Source Credibility3 Wikipedia Topic Assessment4 OpenSym 20194.1 First literature survey of Wikidata quality research4.2 "Article Quality Classification on Wikipedia: Introducing Document Embeddings and Content Features"4.3 "When Humans and Machines Collaborate: Cross-lingual Label Editing in Wikidata"4.4 "Approving automation: analyzing requests for permissions of bots in Wikidata"4.5 "Dwelling on Wikipedia: Investigating Time Spent by Global Encyclopedia Readers"4.6 "Visualization of the Evolution of Collaboration and Communication Networks in Wikis"4.7 Wikitribune navigating "challenges of collaborative evidence-based journalism"5 Conferences and events6 Other recent publications6.1 "Eliciting New Wikipedia Users' Interests via Automatically Mined Questionnaires: For a Warm Welcome, Not a Cold Start"6.2 Shocks make both newcomers and experienced editors contribute more6.3 "Crosslingual Document Embedding As Reduced-Rank Ridge Regression"6.4 "Framing the Holocaust Online: Memory of the Babi Yar Massacres on Wikipedia"6.5 "Framing the Holocaust in popular knowledge: 3 articles about the Holocaust in English, Hebrew and Polish Wikipedia"

*** 15 recent publications were covered or listed in this issue ***

Masssly and Tilman Bayer

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