217 citations · 2.1k across the 107 of their papers we have counts for
5 papers · 1 filter
Attention Dynamics in Collaborative Knowledge Creation
Lingfei Wu, Marco A. Janssen
To uncover the mechanisms underlying the collaborative production of knowledge, we investigate a very large online Question and Answer system that includes the question asking and…
The Role of Diverse Strategies in Sustainable Knowledge Production
Lingfei Wu, Jacopo A. Baggio, Marco A. Janssen
Online communities are becoming increasingly important as platforms for large-scale human cooperation. These communities allow users seeking and sharing professional skills to solv…
Estimating the Trace of the Matrix Inverse by Interpolating from the Diagonal of an Approximate Inverse
Lingfei Wu, Jesse Laeuchli, Vassilis Kalantzis +2
A number of applications require the computation of the trace of a matrix that is implicitly available through a function. A common example of a function is the inverse of a large,…
Towards Real-Time Detection and Tracking of Spatio-Temporal Features: Blob-Filaments in Fusion Plasma
Lingfei Wu, Kesheng Wu, Alex Sim +5
A novel algorithm and implementation of real-time identification and tracking of blob-filaments in fusion reactor data is presented. Similar spatio-temporal features are important…
The Hidden Geometry of Attention Diffusion
Cheng-Jun Wang, Lingfei Wu, Jiang Zhang +1
We propose a geometric model to quantify the dynamics of attention in online communities. Using clicks as a proxy of attention, we find that the diffusion of collective attention i…