Difference between revisions of "Meeting Schedule"

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'''Location:''' Hybrid - Buchanan 430, and the zoom link below
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'''Location:''' Muenzinger D430. '''Except''' 9/10, which will be at the front lawn of the Lucile Berkeley Buchanan Building.
  
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'''Time:''' Wednesdays at 10:30am, Mountain Time
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'''Time:''' Wednesdays 11:30am - 1:00 pm, Mountain Time
  
 
'''Zoom link:''' https://cuboulder.zoom.us/j/97014876908
 
'''Zoom link:''' https://cuboulder.zoom.us/j/97014876908
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| 01/24/2024 || '''Planning, introductions, welcome!'''
 
  
 
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| 01/31/2024 || Brunch Social
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| 08/27/25 || '''Planning, introductions, welcome!'''
  
 
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| 02/07/2024 || '''No Meeting''' - Virtual PhD Open House
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| 09/03/25 || Martha + Jim Research Updates
  
 
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| 02/14/2024 || ACL paper clinic
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| 09/10/25 || Social Event at LBB
  
 
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| 02/21/2024 || Cancelled in favor of LING Circle talk by Professor Gibbs
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| 09/17/25 ||  
  
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| 09/24/25 || Aaron's Prelim
  
 
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| 02/28/2024 || Short talks by Kathy McKeowan and Robin Burke
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| 10/01/25 || Rohan's Prelim
  
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Kathy's web page: ''' https://www.cs.columbia.edu/~kathy/
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| 10/08/25 || AAAI Spatial Talk + Mary's Talk
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Title: Addressing Large Language Models that Lie: Case Studies in Summarization
 
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Kathleen McKeown
 
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Columbia University
 
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The advent of large language models promises a new level of performance in generation of text of all kinds, enabling generation of text that is far more fluent, coherent and relevant than was previously possible. However, they also introduce a major new problem: they wholly hallucinate facts out of thin air. When summarizing an input document, they may incorrectly intermingle facts from the input, they may introduce facts that were not mentioned at all, and worse yet, they may even make up things that are not true in the real world. In this talk, I will discuss our work in characterizing the kinds of errors that can occur and methods that we have developed to help mitigate hallucination in language modeling approaches to text summarization for a variety of genres.
 
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Kathleen R. McKeown is the Henry and Gertrude Rothschild Professor of Computer Science at Columbia University and the Founding Director of the Data Science Institute, serving as Director from 2012 to 2017. In earlier years, she served as Department Chair (1998-2003) and as Vice Dean for Research for the School of Engineering and Applied Science (2010-2012). A leading scholar and researcher in the field of natural language processing, McKeown focuses her research on the use of data for societal problems; her interests include text summarization, question answering, natural language generation, social media analysis and multilingual applications. She has received numerous honors and awards, including 2023 IEEE Innovation in Societal Infrastructure Award, American Philosophical Society Elected member, American Academy of Arts and Science elected member, American Association of Artificial Intelligence Fellow, a Founding Fellow of the Association for Computational Linguistics and an Association for Computing Machinery Fellow. Early on she received the National Science Foundation Presidential Young Investigator Award, and a National Science Foundation Faculty Award for Women. In 2010, she won both the Columbia Great Teacher Award—an honor bestowed by the students—and the Anita Borg Woman of Vision Award for Innovation.
 
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Title: Multistakeholder fairness in recommender systems
 
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Robin Burke
 
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University of Colorado Boulder
 
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Abstract: Research in machine learning fairness makes two key simplifying assumptions that have proven challenging to move beyond. One assumption is that we can productively concentrate on a uni-dimensional version of the problem: achieving fairness for a single protected group defined by a single sensitive feature. The second assumption is that technical solutions need not engage with the essentially political nature of claims surrounding fairness. I argue that relaxing these assumptions is necessary for machine learning fairness to achieve practical utility. While some recent research in rich subgroup fairness has considered ways to relax the first assumption, these approaches require that fairness be defined in the same way for all groups, which amounts to a hardening of the second assumption. In this talk, I argue for a formulation of machine learning fairness based on social choice and exemplify the approach in the area of recommender systems. Social choice is inherently multi-agent, escaping the single group assumption and, in its classic formulation, places no constraints on agents' preferences. In addition, social choice was developed to formalize political decision-making mechanisms, such as elections, and therefore offers some hope of directly addressing the inherent politics of fairness. Social choice has complexities of its own, however, and the talk will outline a research agenda aimed at understanding the challenges and opportunities afforded by this approach to machine learning fairness.
 
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Bio: Information Science Department Chair and Professor Robin Burke conducts research in personalized recommender systems, a field he helped found and develop. His most recent projects explore fairness, accountability and transparency in recommendation through the integration of objectives from diverse stakeholders. Professor Burke is the author of more than 150 peer-reviewed articles in various areas of artificial intelligence including recommender systems, machine learning and information retrieval. His work has received support from the National Science Foundation, the National Endowment for the Humanities, the Fulbright Commission and the MacArthur Foundation, among others.
 
  
 
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| 03/06/2024 || Jon's Proposal
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| 10/15/25 || BLAST + LECS Research Updates
  
 
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| 03/13/2024 || Veronica Qing Lyu, Faithful Chain of Thought Reasoning
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| 10/22/25 || Maria A - COLM's Updates
  
 
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| 03/20/2024 || Cory Paik's Area Exam
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| 10/29/25 || CU Anschutz NLP (3-4 short presentations)
  
 
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| 03/27/2024 || '''No Meeting''' - Spring Break
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| 11/05/25 || Sarah's Talk
  
 
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| 04/03/2024 || CLASIC Industry Day
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| 11/12/25 ||  
  
 
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| 04/10/2024 || Rehan's Dissertation Defense 
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| 11/19/25 || Ben's Slot (INFO)
  
 
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| 04/17/2024 || Maggie's Proposal
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| 11/26/25 || Break - No Meeting
  
 
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| 04/24/2024 || Téa's Senior Thesis Defense
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| 12/03/25 || Mary's proposal
  
 
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| 05/01/2024 || Sagi's Proposal
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| 12/10/25 ||  
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=Past Schedules=
 
=Past Schedules=
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* [[Spring 2025 Schedule]]
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* [[Fall 2024 Schedule]]
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* [[Spring 2024 Schedule]]
 
* [[Fall 2023 Schedule]]
 
* [[Fall 2023 Schedule]]
 
* [[Spring 2023 Schedule]]
 
* [[Spring 2023 Schedule]]

Latest revision as of 12:02, 3 September 2025

Location: Muenzinger D430. Except 9/10, which will be at the front lawn of the Lucile Berkeley Buchanan Building.

Time: Wednesdays 11:30am - 1:00 pm, Mountain Time

Zoom link: https://cuboulder.zoom.us/j/97014876908

Date Title
08/27/25 Planning, introductions, welcome!
09/03/25 Martha + Jim Research Updates
09/10/25 Social Event at LBB
09/17/25
09/24/25 Aaron's Prelim
10/01/25 Rohan's Prelim
10/08/25 AAAI Spatial Talk + Mary's Talk
10/15/25 BLAST + LECS Research Updates
10/22/25 Maria A - COLM's Updates
10/29/25 CU Anschutz NLP (3-4 short presentations)
11/05/25 Sarah's Talk
11/12/25
11/19/25 Ben's Slot (INFO)
11/26/25 Break - No Meeting
12/03/25 Mary's proposal
12/10/25

Past Schedules

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