activity
20172025
most citedActivity Archetypes in Question-and-Answer (Q&A) Websites - A Study of 50 Stack Exchange Instances

11 citations · 14 across the 4 of their papers we have counts for

collaborators

5 papers

cs.CY2025★ 2 cited

Stack Overflow Is Not Dead Yet: Crowd Answers Still Matter

Denis Helic, Tiago Santos

Millions of users visit Stack Overflow regularly to ask community for answers to their programming questions. However, like many other platforms, Stack Overflow consistently strugg…

cs.LG2021

Surfacing Estimation Uncertainty in the Decay Parameters of Hawkes Processes with Exponential Kernels

Tiago Santos, Florian Lemmerich, Denis Helic

As a tool for capturing irregular temporal dependencies (rather than resorting to binning temporal observations to construct time series), Hawkes processes with exponential decay h…

cs.CY2021

Limiting Tags Fosters Efficiency

Tiago Santos, Keith Burghardt, Kristina Lerman +1

Tagging facilitates information retrieval in social media and other online communities by allowing users to organize and describe online content. Researchers found that the efficie…

cs.CY2021★ 1 cited

Volunteer contributions to Wikipedia increased during COVID-19 mobility restrictions

Thorsten Ruprechter, Manoel Horta Ribeiro, Tiago Santos +4

Wikipedia, the largest encyclopedia ever created, is a global initiative driven by volunteer contributions. When the COVID-19 pandemic broke out and mobility restrictions ensued ac…

cs.SI2017★ 11 cited

Activity Archetypes in Question-and-Answer (Q&A) Websites - A Study of 50 Stack Exchange Instances

Tiago Santos, Simon Walk, Roman Kern +2

Millions of users on the Internet discuss a variety of topics on Question-and-Answer (Q&A) instances. However, not all instances and topics receive the same amount of attention, as…