Research Area
Year Published

116 Results

April 3, 2017

Understanding Short-term Changes in Online Activity Sessions

World Wide Web (WWW)

Using data from the online social networking site Facebook, we uncover temporal patterns at a much smaller time scale: within individual sessions.

By: Farshad Kooti, Karthik Subbian, Winter Mason, Lada Adamic, Kristina Lerman

February 25, 2017

Understanding Feedback Expectations on Facebook

Conference on Computer-Supported Cooperative Work and Social Computing (CSCW)

When people share updates with their friends on Facebook they have varying expectations for the feedback they will receive. In this study, we quantitatively examine the factors contributing to feedback expectations and the potential outcomes of expectation fulfillment.

By: Nir Grinberg, Shankar Kalyanaraman, Lada Adamic, Mor Naaman

February 25, 2017

BARCHAN: Blob Alignment for Robust CHromatographic ANalysis

Journal of Chromatography A

In this study, we present a chromatogram and template alignment method based on peak registration called BARCHAN.

By: Camille Couprie, Laurent Duval, Maxime Moreaud, Sophie Henon, Melinda Tebib, Vincent Souchon

February 22, 2017

Automatic Alt-text: Computer-generated Image Descriptions for Blind Users on a Social Network Service

CSCW

This paper covers the design and deployment of an automatic alt-text (AAT), a system that applies computer vision technology to identify faces, objects, and themes from photos to generate photo alt-text for screen reader users on Facebook.

By: Shaomei Wu, Jeffrey Wieland, Omid Farivar, Julie Schiller

February 21, 2017

Discussion Quality Diffuses in the Digital Public Square

WWW 2017

We present the results of a study on large public Facebook pages where we randomly used two different methods—most recent and social feedback—to order comments on posts.

By: George Berry, Sean Taylor

December 16, 2016

The Paradox of Weak Ties in 55 Countries

Journal of Economic Behavior & Organization

This is the first paper to use a single dataset and methodology to compare the importance of weak ties across countries.

By: Laura K. Gee, Jason J. Jones, Christopher J. Fariss, Moira Burke, James H. Fowler

November 8, 2016

Performance or Capacity

CMG imPACt, Conference by the Computer Measurement Group

We explore the gap between measurement and aggregation approaches used in performance monitoring, which are not always useful for capacity planning, vs approaches used in capacity planning are often meaningless for performance analysis, and discusses ways to reconcile the two tasks.

By: Alexander Gilgur, Steve Politis

October 31, 2016

Online Social Integration is Associated with Reduced Mortality Risk

PNAS

We reference 12 million social media profiles against California Department of Public Health vital records and use longitudinal statistical models to assess whether social media use is associated with longer life.

By: William Hobbs, Moira Burke, Nicholas Christakis, James H. Fowler

August 13, 2016

Compressing Graphs and Indexes with Recursive Graph Bisection

KDD

Graph reordering is a powerful technique to increase the locality of the representations of graphs, which can be helpful in several applications. We study how the technique can be used to improve compression of graphs and inverted indexes.

By: Laxman Dhulipala, Igor Kabiljo, Brian Karrer, Giuseppe Ottaviano, Sergey Pupyrev, Alon Shalita

August 12, 2016

Towards Optimal Cardinality Estimation of Unions and Intersections with Sketches

ACM Conference on Knowledge Discovery and Data Mining

This paper presents and analyzes two new classes of methods for estimating cardinalities of intersections and unions from sketches.

By: Daniel Ting