Date of Award

Spring 1-1-2012

Document Type


Degree Name

Master of Science (MS)


Computer Science

First Advisor

Leysia Palen

Second Advisor

Kenneth Anderson

Third Advisor

James Martin


Displacement of pets in and after disaster events is a serious matter to families and creates public safety and health issues at large. During and after Hurricane Katrina, an estimated 200,000 pets were displaced from their guardians, with only five percent of these pets ever being reunited with their guardians. One of the major obstacles to successful pet-to-family reunification is the large search space individuals must navigate in search of lost pets. Grounded in the theory of crisis informatics, which studies how people use information communication technology (ICT) in crisis, this work leverages the phenomenon of digital volunteerism to better address the problem of pet-to-family reunification. This effort culminates in the form of No Place Like Home, which is an online platform for use by digital volunteers interesting in aiding pet-to-family reunification efforts in a disaster. This work describes this system in terms of its design features and software architecture. The primary design features of the system are an accessible user interface, collaboration mechanisms (in the form of social network support and chat rooms), and social capital. The other key feature of this system is how it incorporates human computation (performed by the crowd of digital volunteers) with machine computation (performed by information retrieval and classification systems) in a collaborative manner which plays to the strengths of each type of computation. An evaluation of the machine learning components of the system in an experimental setting reveals that the positioning of machine computation as supporting the larger activities of digital volunteers is promising. With this validation, the system is poised for future public deployment in a disaster scenario and further study.