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Public talk: "From online streams to Wikipedia"

How does information travel from to various online streams to Wikipedia, "our collective memory"? Maarten de Rijke from University of Amsterdam visits UiS to give some answers.

Maarten de Rijke is full professor of Information Processing and Internet in the Informatics Institute at the University of Amsterdam. 

As part of a visit to our Department of Electrical Engineering and Computer Science, de Rijke will give a talk (in English) in Kjell Arholms Hus, Auditorium 2 on Tuesday, 14 March.  

Titled: "The Birth of Collective Memories: Analyzing Emerging Entities in Text Streams", it is based on joint work with David Graus (FD Mediagroep) and Daan Odijk (Blendle).


Professor de Rijke describes the research behind his talk: 

"We study how collective memories are formed online. We do so by tracking entities that emerge in public discourse, that is, in online text streams such as social media and news streams, before they are incorporated into Wikipedia, which, we argue, can be viewed as an online place for collective memory. 

By tracking how entities emerge in public discourse, i.e., the temporal patterns between their first mention in online text streams and subsequent incorporation into collective memory, we gain insights into how the collective remembrance process happens online.

Specifically, we analyze nearly 80,000 entities as they emerge in online text streams before they are incorporated into Wikipedia. The online text streams we use for our analysis comprise of social media and news streams, and span over 579 million documents in a timespan of 18 months.

We discover two main emergence patterns: entities that emerge in a “bursty” fashion, i.e., that appear in public discourse without a precedent, blast into activity and transition into collective memory. Other entities display a 'delayed' pattern, where they appear in public discourse, experience a period of inactivity, and then resurface before transitioning into our cultural collective memory."

The talk is free and open to everyone.

Picture of Maarten de Rijke

Maarten de Rijke