# What is the relationship between Yifan Liu and Fisher Yu?

itraveledthere.io · August 4, 2026

> Yifan Liu and Fisher Yu were colleagues at the Computer Vision Lab of ETH Zurich, having started collaborating in March 2023 when Yifan joined the lab...

Yifan Liu and Fisher Yu were colleagues at the Computer Vision Lab of ETH Zurich, having started collaborating in March 2023 when Yifan joined the lab.

Tragically, Yifan Liu passed away in September 2023, leaving her colleagues at ETH Zurich deeply saddened by her untimely death.

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In the aftermath of Yifan's passing, allegations surfaced regarding Fisher Yu's conduct, with claims that he mistreated students and engaged in inappropriate relationships with female students.

The allegations against Fisher Yu have raised concerns about the academic environment at ETH Zurich, leading students and staff to question the institution's commitment to fostering a safe and supportive learning environment.

Fisher Yu's performance within the Physics and Astronomy (PUA) community has also been called into question, adding to the controversy surrounding his actions.

Yifan Liu's memorial page at ETH Zurich praised her positivity, encouragement, and valued contributions as a colleague, highlighting the impact of her tragic loss.

The charges against Fisher Yu and the circumstances surrounding Yifan Liu's death have deeply affected the academic community at ETH Zurich, sparking discussions about the need for better oversight and accountability in academic institutions.

Yifan Liu's research focused on computer vision and the scalability of deep learning, as evidenced by her publications and collaborations with Fisher Yu.

Fisher Yu is an Assistant Professor at the Department of Information Technology and Electrical Engineering at ETH Zurich, where he directs the Visual Intelligence and Systems Group in the Computer Vision Lab.

Prior to his appointment at ETH Zurich, Fisher Yu was a postdoctoral researcher at UC Berkeley and obtained his PhD degree from Princeton University.

The allegations against Fisher Yu have raised concerns about the potential abuse of power dynamics in academia, particularly in the context of faculty-student relationships.

The tragic death of Yifan Liu and the subsequent allegations have underscored the need for more robust policies and procedures to address misconduct and protect the well-being of students and researchers in academic institutions.

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