A Linguist of Algorithms

It would be fair to say that the language Kathleen McKeown loves best is language itself. 

So much so that the Association for Computational Linguistics (ACL) has recently awarded McKeown the ACL Lifetime Achievement Award, recognizing her prolific body of research in natural language processing (NLP) and the distinctive way she approaches problems, connecting technical rigor with curiosity that extends across disciplines. The honor celebrates her ability to shape the field through breakthroughs in NLP while continually exploring new, unconventional directions that expand how researchers think about its role in art, culture, and society. From groundbreaking work in summarization and language generation to collaborations that bridge technology, the arts, the humanities, and social work, she continues to shape the field not only with her innovations but also with her unwavering commitment to mentorship and learning from the next generation.

“This award is particularly meaningful to me as ACL has been my home since the very beginning of my career,” she said.

ACL’s highest honor

When McKeown, who is Henry and Gertrude Rothschild Professor of Computer Science at Columbia Engineering, took the stage at the July 30 award ceremony, attendees were already buzzing with anticipation. Over the next hour, she captivated the audience with a talk that blended technical insight, bold vision, and personal warmth, weaving together stories of research and the collaborative spirit that fuels it. 

“The talk was intellectually inspiring and emotional,” said Dan Roth, professor of computer and information science at University of Pennsylvania, who collaborated with McKeown when she was an Amazon Scholar in 2021 and 2022. “This became vivid in her presentation when she invited both current and previous students to contribute short videos and thus take an active part in presenting her contributions to the community.”

By the time she concluded her talk, the audience rose in a sustained standing ovation. “It was an honor to be in the audience and amazing to see her recognized with such a large and much-deserved standing ovation,” said Nick Deas, one of her PhD students present at the ceremony. “It felt like the largest applause I have witnessed at a conference and showed no sign of ending by the time we were eventually asked to be seated again.”

From McKeown’s very first ACL paper published in 1979 to her term as ACL president in 1992 and beyond, she has been a fixture in the field, advancing computational linguistics. Her work in natural language generation and text summarization has shaped the field for decades.Her contributions in language generation, a research area considered “unpopular” at the time, and in text summarization, a field that was entirely unexplored when she submitted her first National Science Foundation proposal on text summarization in 1997, have gone on to define entire subfields. Her research in social media analysis investigates socially impactful problems; with collaborators from social work and linguistics, her work has investigated how well large language models (LLMs) understand African American Language and how they need to change to do so. In very recent work, she engaged in interdisciplinary projects, this time with art history and art museums, exploring how interpretable models can describe and understand artwork and its style.

Students as co-creators

McKeown’s legacy is inseparable from her role as a mentor. She has guided generations of researchers, fostering an environment where curiosity and collaboration thrive. Some of her most impactful projects began as student ideas, which she nurtured and expanded through her own expertise. She is quick to credit her students as co-creators, learning as much from their fresh perspectives as they learn from her experience. This mutual exchange fuels innovation and ensures her research stays connected to emerging questions and the evolving values of the field.

Time and again, she calls her students her greatest teachers. Rather than viewing guidance as a one-way street, she thrives in an environment of mutual exchange, where curiosity fuels discovery on both sides. 

In her acceptance speech, she spoke warmly about the countless projects that have emerged from these collaborations, spanning methods to control and improve LLMs for generation and summarization to interdisciplinary studies that are needed for new socially impactful applications. She credits her students not only with sharpening her technical thinking but also with broadening her perspective on how NLP can illuminate and be informed by the human experience.

Innovation still ahead

Whether diving into the complexities of multimodal systems or exploring NLP’s role in understanding creativity and cultural expression, McKeown approaches each project as a shared adventure. It’s this openness to learning, coupled with her deep respect for collaborators and her students’ ideas, that has made her both a prolific researcher and a beloved mentor—someone whose legacy will be defined as much by the people she’s inspired as by the innovations she’s pioneered.

Her career demonstrates a rare combination of sustained excellence, bold curiosity, and a refusal to accept “no” as a final answer. As she continues to mentor the next generation of researchers–many leading ambitious projects–the award honors her past and signals the influential, pioneering work still to come.

Lead Photo Caption: Kathleen McKeown is Henry and Gertrude Rothschild Professor of Computer Science and founding director of Columbia’s Data Science Institute