“Well, this is going to be a fun afternoon,” Liam muttered, gazing at the mountains of boxes in his grandmother's storage room. He'd been charged with the task of sorting through her things. The thought made him feel a little melancholic.

He opened a battered old shoebox and pulled out a stack of photographs. His grandmother, according to all family history, was a woman of unwavering principle, a pillar of the community. He flipped through the photos.

He found one of her, young and vibrant, posing with a group of friends at a speakeasy. Another showed her, arms wrapped around a man, laughing into the camera. Liam felt a swell of something inside him, an emotion he couldn't quite define.

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