The rain was finally letting up as Esme entered the bookstore, the smell of damp paper and old leather a familiar comfort. She'd had a tough week, and finding a good book was exactly what she needed. She found a book by her favourite author.

As she settled in at home, the book open on her lap, a small, embossed card slid out. It was an invitation to a garden party, filled with flowery script and promising music.

She couldn’t help but smile. Her fingers traced the elegant calligraphy. She felt a lightness, an almost giddy anticipation for the event. She felt absolutely wonderful.

Emotion: happy

Cluster: Positive / Joy
PC1 (Valence): 3.98 Positive
PC2 (Disposition): -1.14

Role in Research

This story is one of 1,000 stories generated for the emotion happy. 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 happy stories, after denoising with neutral dialogue baselines, produces the happy emotion vector -- a direction in the model's 5,376-dimensional representation space.

Logit Lens (Layer 40)

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

Promoted:
la0.676
excitedly0.533
enthusi0.505
de0.498
🤩0.495
Suppressed:
S-0.896
😞-0.430
ness-0.410
それでも-0.387
L-0.379