Bernie Hogan

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This paper presents a data collection effort designed to incorporate the social dimension in social activity-travel behavior by explicitly studying the link between individuals' social activities and their social networks. The main hypothesis of the data collection effort is that individuals' travel behavior is conditional upon their social networks; that(More)
We evaluate the use and potential benefits of social sorting as a technique for managing email. We present SNARF, the Social Network and Relationship Finder, a tool which filters and sorts email based on the type of message and the user’s past history with an email correspondent, a process we refer to as social sorting. This tool also combines several(More)
Email archives are full of social information, including how messages are addressed and frequency of contact between senders and receivers. To study the use of this rich metadata for email management, particularly email triage, we deployed SNARF, a prototype tool which uses social metadata to organize received email by correspondent, sort received email by(More)
Online forums are rich sources of information about user communication activity over time. Finding temporal patterns in online forum communication threads can advance our understanding of the dynamics of conversations. The main challenge of temporal analysis in this context is the complexity of forum data. There can be thousands of interacting users, who(More)
Caption The intuitive appeal of force-directed layouts is due in part to their ability to represent underlying community structures. Such diagrams show dense pockets of nodes with bridges connecting across clusters. Yet, it is possible to start, rather than end, with community structure. This is a “pinwheel” diagram using the author’s Facebook personal(More)
THe purpose of this article is to introduce the reader to the history, concepts, measures and methods of social network analysis as applied to online information spaces. This is done through description as well as a sustained example using the online social news site Digg.com. Social network analysis is a rapidly expanding interdisciplinary paradigm , much(More)
Social network site (SNS) platforms have the potential to be effective information-seeking channels due to their technical and social affordances, such as the ability to broadcast content to a large group and to aggregate one’s contacts. This study tests the impact of a Facebook app that allows users to visualize their network of Facebook Friends to(More)