Unlocking cosmic origins: LiteBIRD's quest for inflationary gravitational waves
Bibliographic record
Abstract
LiteBIRD is a forthcoming space mission dedicated to study the faint $B$-mode polarization patterns in the cosmic microwave background (CMB) that are believed to be the imprints of the gravitational waves from the period of cosmic inflation. The primary goal of the mission is the measurement of the tensor-to-scalar ratio $r$, with total uncertainty of $\delta r \sim 0.001$. LiteBIRD is planned to be launched in the 2030s to the Sun-Earth Lagrange point L2, where it will perform full-sky CMB measurements for three years. It will cover 15 frequency bands across the 34 to 448 GHz frequency range. The mission will also address key cosmological problems, including a measurement of the optical depth to reionization and constraints on the neutrino mass. With its advanced instrumentation, LiteBIRD will mitigate foreground contamination and systematic errors to provide high-fidelity data to improve our understanding of inflation, large-scale anomalies and other fundamental cosmological phenomena.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.002 | 0.002 |
| Scholarly communication | 0.002 | 0.003 |
| Open science | 0.000 | 0.003 |
| Research integrity | 0.001 | 0.003 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".