Events
Past Event
CANCELLED - POSTPONED: WED@NICO SEMINAR: Jana Diesner, University of Illinois at Urbana-Champaign
Northwestern Institute on Complex Systems (NICO)
12:00 PM
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Lower Level Chambers Hall
Details
![Jana Diesner](
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Due to unforeseen circumstances this talk is POSTPONED. We apologize for the inconvenience and will reschedule at a later date.
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Title:
Impact Assessment of Information Products and Data Provenance
Speaker:
Jana Diesner - Assistant Professor, School of Information Sciences, University of Illinois at Urbana-Champaign
Talk Abstract:
The emerging field of human-centered data science has led to several transformative advances in research and technology: With groups of people generating digital data, some social effects can be measured instead of having to be estimated. Also, the availability of such data may allow us to listen to peoples' signals instead of having to ask them questions. Finally, both the structure and content of human interactions can be considered for data analysis, and applying mixed methods to such data is becoming a routine approach.
These advances have broadened the scope in possibilities in impact assessment research, among other fields. I present our work on developing new computational solutions for identifying the impact of information products on people by leveraging theories from linguistics and the social sciences as well as methods from natural language processing and machine learning. I focus on a study where we developed and evaluated a theoretically grounded categorization schema, codebook, corpus annotation, and prediction model for detecting multiple practically relevant types of impact that documentary films can have on individuals, such as change versus reaffirmation of people's behavior, cognition, and emotions. This work uses reviews as a form of user-generated content. We use linguistic, lexical, and psychological features for supervised learning; achieving an accuracy rate of about 81% (F1).
The outlined advances also imply several challenges: Verifying the accuracy of large-scale data is crucial for enabling collaborations, sharing data, and generating reliable results, but is challenging if the data provenance process lacks transparency. While choices about data collection, preparation and analysis are increasingly embedded in datasets and technologies, we still have a poor understanding of the impact of these decisions on research results and further actions. I present on our work on entity resolution of social network data, highlight the impact of common strategies and shortcomings on node and graph level properties, and discuss implications of biased results for decision and policy making.
Live Stream:
To join the Meeting: bluejeans.com/8474912527
To join via Browser: bluejeans.com/8474912527/browser
Time
Wednesday, April 26, 2017 at 12:00 PM - 1:00 PM
Location
Lower Level Chambers Hall Map
Contact
Calendar
Northwestern Institute on Complex Systems (NICO)
Fall 2024 Classes Begin (No Northwestern Monday in Fall)
University Academic Calendar
All Day
Details
Fall 2024 Classes Begin (No Northwestern Monday in Fall)
Time
Tuesday, September 24, 2024
Contact
Calendar
University Academic Calendar
WED@NICO Seminar Series returns October 2024
Northwestern Institute on Complex Systems (NICO)
12:00 PM
//
Lower Level, Chambers Hall
Details
![NICO Logo](
https://planitpurple.northwestern.edu/uploads/image_sm/191126_sm.png)
The Wednesdays@NICO speaker series with return on Wednesday, October 2, 2024. Speakers will be announced in September.
We welcome speaker suggestions from the NICO community. Please use this form to nominate a speaker.
Location:
In person: Chambers Hall, 600 Foster Street, Lower Level
About the Speaker Series:
Wednesdays@NICO is a vibrant weekly seminar series focusing broadly on the topics of complex systems, data science and network science. It brings together attendees ranging from graduate students to senior faculty who span all of the schools across Northwestern, from applied math to sociology to biology and every discipline in-between. Please visit: https://bit.ly/WedatNICO for information on future speakers.
Time
Wednesday, October 2, 2024 at 12:00 PM - 1:00 PM
Location
Lower Level, Chambers Hall Map
Contact
Calendar
Northwestern Institute on Complex Systems (NICO)