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.
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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 Dev17.90
Most Volatile LensCausal Attribution Lens
Total Samples8,748
Stable PCA Components2 / 2
Mean Component Similarity0.999
Most Unstable LoadingObjectivity vs Opinion Lens
Max Loading Std Dev0.0193
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 | 1.000 | 1.000 | 53.3% | 1.0% |
| PC2 | yes | 12 | 0.999 | 0.998 | 12.8% | 0.3% |
Stability Visuals
Lens Stability Table
| Lens | Samples | Mean | Std Dev | CV % | Source Gap | Range |
|---|---|---|---|---|---|---|
| Causal Attribution Lens | 729 | 52.35 | 24.67 | 47.13 | 29.14 | 100.00 |
| Emotional Intensity Lens | 729 | 38.61 | 23.89 | 61.87 | 34.61 | 100.00 |
| Authority and Source Positioning Lens | 729 | 77.02 | 20.30 | 26.35 | 28.75 | 100.00 |
| Epistemic Modality and Certainty Lens | 729 | 70.93 | 20.14 | 28.39 | 28.52 | 100.00 |
| Hegemonic Common-Sense Lens | 729 | 70.06 | 19.86 | 28.34 | 26.57 | 100.00 |
| Entity-Level Sentiment Lens | 729 | 87.46 | 18.58 | 21.25 | 33.33 | 100.00 |
| Credibility Lens | 729 | 66.08 | 18.38 | 27.82 | 27.41 | 95.00 |
| Objectivity vs Opinion Lens | 729 | 92.43 | 18.29 | 19.79 | 26.83 | 85.00 |
| Sentiment Clarity Lens | 729 | 88.84 | 16.81 | 18.93 | 28.55 | 95.00 |
| Linguistic Quality Lens | 729 | 88.92 | 15.91 | 17.90 | 24.36 | 100.00 |
| Agency and Voice Lens | 729 | 73.20 | 12.73 | 17.38 | 19.14 | 80.00 |
| Omission and Silence Lens | 729 | 82.44 | 5.20 | 6.31 | 4.49 | 50.00 |