Eliza drummed her fingers on the armrest, her leg bouncing impatiently. The flight to her high school reunion in Chicago was delayed. She felt a familiar hollowness blooming in her stomach, a feeling of yearning. She watched the other passengers milling around, their faces etched with a range of frustrations.

She remembered the feeling of excitement, of endless possibility, as she waved goodbye to her classmates at the graduation ceremony. The world had felt so bright, so open then. She pulled out her phone, scrolling through old photos. Images of youthful faces, awkward smiles, and carefree laughter.

She found a photo of herself with her best friend, Sarah, taken at prom. Sarah, who was gone now. A single tear traced a path down her cheek, leaving a burning sensation. The airport announcements faded into a distant hum.

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