News Analytics
FastAPI-backed source, lens, workflow, and event diagnostics
The news surface reads from the backend contract and exposes exploratory comparisons, data quality checks, workflow health, and same-event analysis.
Index
Pages
All routes below stay inside the same shared analytics surface.
News Lens Stability
Live FastAPI data
What this page does
Check whether source/lens patterns remain stable under resampling.
Stability Summary
Lenses Analyzed12
Avg Std Dev12.41
Most Volatile LensEmotional Intensity Lens
Total Samples2,064
Stable PCA Components2 / 2
Mean Component Similarity0.988
Most Unstable LoadingLinguistic Quality Lens
Max Loading Std Dev0.0684
Latent Space Stability
ok
Recomputes PCA across deterministic subsamples and compares component directions back to the full-corpus PCA. Low similarity or high loading variance means the latent axis should be interpreted cautiously.
| Component | Stable | Resamples | Mean Similarity | Min Similarity | Explained Mean | Explained Std Dev |
|---|---|---|---|---|---|---|
| PC1 | yes | 12 | 0.996 | 0.992 | 29.4% | 0.7% |
| PC2 | yes | 12 | 0.981 | 0.955 | 14.0% | 0.4% |
Stability Visuals
Lens Stability Table
| Lens | Samples | Mean | Std Dev | CV % | Source Gap | Range |
|---|---|---|---|---|---|---|
| Emotional Intensity Lens | 172 | 46.80 | 23.78 | 50.82 | 34.25 | 90.00 |
| Causal Attribution Lens | 172 | 59.39 | 20.64 | 34.75 | 47.13 | 100.00 |
| Objectivity vs Opinion Lens | 172 | 93.26 | 17.80 | 19.08 | 37.27 | 80.00 |
| Epistemic Modality and Certainty Lens | 172 | 78.20 | 14.43 | 18.45 | 25.00 | 55.00 |
| Hegemonic Common-Sense Lens | 172 | 74.20 | 14.32 | 19.30 | 12.73 | 100.00 |
| Credibility Lens | 172 | 72.38 | 11.02 | 15.22 | 15.08 | 60.00 |
| Authority and Source Positioning Lens | 172 | 81.60 | 10.23 | 12.53 | 20.91 | 75.00 |
| Agency and Voice Lens | 172 | 79.51 | 9.97 | 12.53 | 28.38 | 40.00 |
| Linguistic Quality Lens | 172 | 94.77 | 9.18 | 9.69 | 18.00 | 50.00 |
| Sentiment Clarity Lens | 172 | 94.36 | 7.10 | 7.53 | 12.50 | 45.00 |
| Omission and Silence Lens | 172 | 82.65 | 5.74 | 6.95 | 7.25 | 30.00 |
| Entity-Level Sentiment Lens | 172 | 92.97 | 4.72 | 5.08 | 10.00 | 40.00 |