Research

Representational Geometry Dynamics Across Recurrent Deep Vision Models

Kexin Cindy Luo, George A. Alvarez, Talia Konkle

2025–2026

Abstract:

This line of work asks how representations evolve across recurrent processing in deep vision models. In a first thread (VSS 2025 / CCN 2025), we showed that default long-range modulatory feedback connections compacts category clusters and pulls exemplars toward their prototypes: refining local representational geometry while largely preserving global structure, an emergent “prototype effect.” A follow-up thread (VSS 2026 and an 8-page CCN 2026 proceeding) extends this to four different recurrent model families and shows that different recurrent architectures exhibit distinct geometric trajectories and decision-stage structures, inviting more careful differentiation among recurrent vision models in both computational and neuroscientific contexts.

Keywords: recurrence feedback representational geometry category structure deep neural networks

Finding Unsupervised Alignment of Conceptual Systems in Image‑Word Representations

Kexin Luo, Bei Zhang, Yajie Xiao, Brenden Lake

2024

Abstract:

Advancements in deep neural networks have led to significant progress in computer vision and natural language processing. These networks, trained on real-world stimuli, develop high-level feature representations of stimuli. It is hypothesized that these representations, stemming from different inputs, should converge into similar conceptual systems, as they reflect various perspectives of the same underlying reality. This paper examines the degree to which different conceptual systems can be aligned in an unsupervised manner, using feature-based representations from deep neural networks. Our investigation centers on the alignment between the image and word representations produced by diverse neural networks, emphasizing those trained via self-supervised learning methods. Subsequently, to probe comparable alignment patterns in human learning, we extend this examination to models trained on developmental headcam data from children. Our findings reveal a more pronounced alignment in models trained through self-supervised learning compared to supervised learning, effectively uncovering higher-level structural connections among categories. However, this alignment was notably absent in models trained with limited developmental headcam data, suggesting more data, more inductive biases, or more supervision are needed to establish alignment from realistic input.

Keywords: alignment self-supervised learning image-word representations concept learning developmental headcam data

Reflecting the Male Gaze: Quantifying Female Objectification in 19th and 20th Century Novels

Kexin Luo, Yue Mao, Bei Zhang, Sophie Hao

2024

Abstract:

Inspired by the concept of the male gaze (Mulvey, 1975) in literature and media studies, this paper proposes a framework for analyzing gender bias in terms of female objectification—the extent to which a text portrays female individuals as objects of visual pleasure. Our framework measures female objectification along two axes. First, we compute an agency bias score that indicates whether male entities are more likely to appear in the text as grammatical agents than female entities. Next, by analyzing the word embedding space induced by a text (Caliskan et al., 2017), we compute an appearance bias score that indicates whether female entities are more closely associated with appearance-related words than male entities. Applying our framework to 19th and 20th century novels reveals evidence of female objectification in literature: we find that novels written from a male perspective systematically objectify female characters, while novels written from a female perspective do not exhibit statistically significant objectification of any gender.

Keywords: bias gender stereotypes sexism representational harms literature humanities