The silence in Michael's empty apartment was suddenly deafening. He had just finished reading the announcement - his college, the place where he'd spent the best years of his life, was closing. A wave of something he didn’t know how to name washed over him.

He got up and walked over to the bookshelf, pulling out a faded copy of the school newspaper. He flipped through the pages, his fingers tracing the headlines and photos. He found himself smiling at an article about a student protest he had participated in, and the memory of the thrill and the camaraderie filled him.

He went to the window, gazing out at the city. The world felt different now. Less colorful. He felt a phantom ache in his chest, a longing for something he couldn't quite grasp.

Emotion: nostalgic

Cluster: Nostalgia / Reflection
PC1 (Valence): 1.00 Positive
PC2 (Disposition): -1.93

Role in Research

This story is one of 1,000 stories generated for the emotion nostalgic. During extraction, it was fed through Gemma4-31B and its hidden state activations were captured at 11 layers.

The mean activation across all 1,000 nostalgic stories, after denoising with neutral dialogue baselines, produces the nostalgic emotion vector -- a direction in the model's 5,376-dimensional representation space.

Logit Lens (Layer 40)

Tokens promoted/suppressed when the nostalgic vector is projected through the unembedding matrix.

Promoted:
H0.677
L0.647
시절0.611
nostalgic0.609
fondly0.609
Suppressed:
--0.564
either-0.525
or-0.497
-0.487
l-0.449