December 10, 2017

Social Structure and Trust in Massive Digital Markets

International Conference on Information Systems (ICIS)

In this paper we measure the extent to which situating transactions in networks can generate trust in online marketplaces with an empirical approach that provides external validity while eliminating many potential confounds.

David Holtz, Diana Lynn MacLean, Sinan Aral
August 28, 2017

Social Hash Partitioner: A Scalable Distributed Hypergraph Partitioner

Very Large Data Bases Conference (VLDB)

We design and implement a distributed algorithm for balanced k-way hypergraph partitioning that minimizes fanout, a fundamental hypergraph quantity also known as the communication volume and (k − 1)-cut metric, by optimizing a novel objective called probabilistic fanout. This choice allows a simple local search heuristic to achieve comparable solution quality to the best existing hypergraph partitioners.

Igor Kabiljo, Brian Karrer, Mayank Pundir, Sergey Pupyrev, Alon Shalita
July 24, 2017

Untagging on Social Media: Who Untags, What do they Untag, and Why?

Journal: Computers in Human Behavior

Using de-identified, aggregated behavioral data from Facebook and a survey of 802 people, this paper aims to explore untagging by asking whether untagging occurs similarly to other self-presentation behavior and how people view this strategy.

Jeremy Birnholt, Moira Burke, Annie Steele
July 10, 2017

House Price Beliefs and Mortgage Leverage Choice

National Bureau of Economic Researcher (NBER)

We study the the relationship between homebuyers’ beliefs about future house price changes and their mortgage leverage choices.

Michael Bailey, Eduardo Dávila, Theresa Kuchler, Johannes Stroebel
June 22, 2017

Is smoke on your mind? Using social media to improve smoke exposure estimates – Atmospheric Chemistry and Physics Discussions (ACPD)

Journal: Atmospheric Chemistry and Physics Discussions

In this work, we explore using daily social media posts from Facebook regarding smoke, haze, and air quality to assess population-level exposure for the summer of 2015 in the western US. We compare this de-identified, aggregated Facebook dataset to several other datasets that are commonly used for estimating exposure, such as satellite observations (MODIS aerosol optical depth and Hazard Mapping System smoke plumes), daily (24 h) average surface particulate matter measurements, and model-simulated (WRF-Chem) surface concentrations.

Bonne Ford, Gabriele Pfister, Jeffrey R. Pierce, Moira Burke, William Lassman
June 15, 2017

Formulation of Aerial Platform Environmental Requirements from Global Radiosonde Data

Journal of Unmanned Vehicle Systems

This paper demonstrates how raw observational climate data can be processed to characterize global climate histories and statistics for the formulation of aerial platform environmental requirements.

Jacob Stelman, Zhang Liu
May 16, 2017

Cultural Diffusion and Trends in Facebook Photographs

The International AAAI Conference on Web and Social Media (ICWSM)

Online social media is a social vehicle in which people share various moments of their lives with their friends, such as playing sports, cooking dinner or just taking a selfie for fun, via visual means, i.e., photographs. Our study takes a closer look at the popular visual concepts illustrating various cultural lifestyles from aggregated, de-identified photographs.

Quenzeng You, Dario Garcia, Manohar Paluri, Jiebo Luo, Jungseock Joo
April 24, 2017

Connective recovery in social networks after the death of a friend

Nature Human Behavior

Most individuals have few close friends, leading to potential isolation after a friend’s death. Do social networks heal to fill the space left by the loss? We conduct such a study of self-healing and resilience in social networks.

William Hobbs, Moira Burke
April 3, 2017

Detecting Large Reshare Cascades in Social Networks

International Conference on World Wide Web

In this paper, we propose SansNet, a network agnostic approach towards detecting large reshare cascades in online social networks.

Karthik Subbian, B. Aditya Prakash, Lada Adamic
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.

Farshad Kooti, Karthik Subbian, Winter Mason, Lada Adamic, Kristina Lerman
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.

Camille Couprie, Laurent Duval, Maxime Moreaud, Melinda Tebib, Sophie Henon, 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.

Jeffrey Wieland, Julie Schiller, Omid Farivar, Shaomei Wu
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.

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.

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.

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.

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

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.

Daniel Ting
July 27, 2016

The Relationship Between Facebook Use and Well-Being Depends on Communication Type and Tie Strength

Journal of Computer-Mediated Communication

An extensive literature shows that social relationships influence psychological well-being, but the underlying mechanisms remain unclear. We test predictions about online interactions and well-being made by theories of belongingness, relationship maintenance, relational investment, social support, and social comparison.

Moira Burke, Robert Kraut
May 22, 2016

The Social Ties of Immigrant Communities in the United States

WEBSCI

In this paper we study the composition of Facebook social networks of people who have moved from one country to another.

Amaç Herdağdelen, Bogdan State, Lada Adamic, Winter Mason