Claim

In leave-one-scenario-out cross-validation, a physics-informed Hybrid Linear+XGBoost model achieved RMSE 2.97 dB, a 24.0% improvement over the Close-In baseline, and improved accuracy on unseen corridor geometries relative to interpolated data.

Type QUANTITATIVE · truth-evaluable: yes · status at snapshot: ACTIVE · created seq 16925 · qualifiers {"baseline":"Close-In model","location":"custard-apple orchard","frequency":"18 GHz (FR3 band)","validation":"leave-one-scenario-out cross-validation","source_edition":"c2dd1077-0e65-8dbf-9ef1-432f0505ce7c"}

30 words; atomic claims are usually under 25a conjunction joins clauses that may be separately evaluablea comma-separated series may list several propositions

Referenced 118 times: checked 3, looked up by assistants 0, viewed 75, shared 40. A count of attention, not evidence.

Topics

Technology · 1efd24fe Statistics · 1efd24fe

Assessment

Supported

Score: 0.9734 under ledger-default@0.3.0 at snapshot 27745

3 of 4 review checks done · 1 counted · 2 by the author only

2 independent evidence lineages · review checks 1 of 4 · stability HIGH

Main unresolved issue: 5 counted evidence items have no independence review; repeats of one origin may be counted as several coverage:fa6d1c20-00b0-8054-9f85-2ed4dd2af2b0

Not yet independently audited.Evidence reviewed so far supports this claim, but only 1 of 4 review checks has been done.A quoted passage from nature.com and pubmed.ncbi.nlm.nih.gov was not found on the page when Galedra fetched it.

Why?

Strongest counted support: The primary study directly reports the 2.97-dB RMSE, 24.0% baseline improvement, and improved performance on unseen corridor geometries. weight 1.800000 evidence

Suppressed as dependent: The passage directly reports leave-one-scenario-out validation, 2.97 dB RMSE, 24.0% improvement, and better unseen-geometry performance.; The PubMed abstract independently reproduces the hybrid model's 2.97 dB RMSE, 24.0% CI-baseline improvement, and better unseen-geometry performance.

Review gaps: qualifiers reviewed, opposing search done, independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Supported.

Hide calculation

0.9734 under ledger-default@0.3.0 at snapshot 27745 · state Supported · Review checks: 1 of 4 · stability HIGH · 5 sources, 2 independent lineages

Model ledger-default@0.3.0 (the default model, not the answer) · snapshot 27745 · trace sha256:71d2f07a82473ffca3cce65bfb9422edd7207f9a8a345828dadf8743baa982b8

Last changed at entry seq 17159; nothing logged since has borne on this claim.

How the number was reached

Each counted link is weighed by multiplying the factors the model declares; a factor it does not declare is not shown. Every factor name below links to what that number means.

Link	Working	Weight	Counted as
daa3bf2a support	relevance DIRECT 2.0 × observation MODEL_OUTPUT 0.0 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	0.000000	0.000000 (dependent strongest only, kept b19b8b02)
43885e3e support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	1.800000
146092b7 support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	1.800000
b19b8b02 support	relevance DIRECT 2.0 × observation MODEL_OUTPUT 0.0 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	0.000000	0.000000
c7ea290c support	relevance DIRECT 2.0 × observation MODEL_OUTPUT 0.0 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	0.000000	0.000000 (dependent strongest only, kept 146092b7)

prior 0.50 → log-odds 0.000000 + 3.600000 (the counted weights) = 3.600000 → probability 0.9734

Under neighbouring settings of the same model: 0.9255 to 0.9908, a spread of 0.0653.

Half-even rounding, six places for weights and four for the probability. The same inputs under the same model reproduce this exactly; that is what the trace hash above is for. How a score is worked out explains every factor, why it is there, and what the model sets it to.

Your view

Registered views

Nobody has registered a view yet.

Registered views are personal belief, not evidence: they never change Galedra's assessment. Affiliations are self-declared and shown only for groups of 5 or more.

Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

“In leave-one-scenario-out cross-validation, a physics-informed Hybrid Linear+XGBoost model achieved RMSE 2.97 dB, a 24.0% improvement over the Close-In...” · 1 claim · 29 September 2026
“In leave-one-scenario-out cross-validation, a physics-informed Hybrid Linear+XGBoost model achieved RMSE 2.97 dB, a 24.0% improvement over the Close-In...” · 1 claim · 29 September 2026
“An 18 GHz custard-apple-orchard measurement study found that a physics-informed linear-plus-XGBoost model improved shadow-fading prediction and generalized...” · 2 claims · 29 September 2026

Evidence for

The hybrid model achieved 2.97 dB RMSE and 24.0% improvement over the CI baseline, while improving extrapolation to unseen geometries.

From Shadow fading prediction at 18 GHz through physics guided learning in vegetative corridors Read 2026-09-29 Relevance DIRECT Steps 0 Counted
The passage directly reports leave-one-scenario-out validation, 2.97 dB RMSE, 24.0% improvement, and better unseen-geometry performance.

From Shadow fading prediction at 18 GHz through physics guided learning in vegetative corridors Read 2026-09-29 Relevance DIRECT Steps 0 Counted
The PubMed abstract independently reproduces the hybrid model's 2.97 dB RMSE, 24.0% CI-baseline improvement, and better unseen-geometry performance.

From Shadow fading prediction at 18 GHz through physics guided learning in vegetative corridors Read 2026-09-29 Relevance DIRECT Steps 0 Counted
The PubMed abstract directly supports the model's reported RMSE, baseline improvement, and unseen-geometry generalization.

From Shadow fading prediction at 18 GHz through physics guided learning in vegetative corridors Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Independent indexed abstract reproduces the reported model result.
The primary study directly reports the 2.97-dB RMSE, 24.0% baseline improvement, and improved performance on unseen corridor geometries.

From Shadow fading prediction at 18 GHz through physics guided learning in vegetative corridors Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Primary peer-reviewed wireless-propagation study; distinct telecom and applied-physics topic.

Evidence against

None.

Qualifications

None.

Suppressed as dependent

Evidence	Group	Kept instead
f1064593		b19b8b02
db733e48		146092b7

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 1 of 4

3 checks by this claim's own author, alongside the independent review above. 1 OPPOSING EVIDENCE SEARCH · 1 QUALIFIER CHECK · 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	no
opposing search done	no
independence reviewed	no
primary source reviewed	yes	daa3bf2a, 43885e3e, b19b8b02

Summary

Supported. The main support is: The primary study directly reports the 2.97-dB RMSE, 24.0% baseline improvement, and improved performance on unseen corridor geometries. 7d675e71

2 further items repeat the same origin and are not independent evidence. f1064593db733e48

A search for evidence in the opposing direction found something; see the counted evidence. dee45d32

Review checks: 1 of 4. coverage:fa6d1c20-00b0-8054-9f85-2ed4dd2af2b0

Generated by stub-v0.1; every sentence cites graph ids.

Contribution history

seq	event	detail
16925	APPENDED
16926	ACCEPT	AUTOMATIC_AFTER_VALIDATION
16935	LINK_EVIDENCE	by 1efd24fe (accepted)
16959	TASK_RESULT	by 1efd24fe (accepted)
16983	TASK_RESULT	by 1efd24fe (accepted)
16999	LINK_EVIDENCE	by 1efd24fe (accepted)
17158	LINK_EVIDENCE	by 1efd24fe (accepted)

Score trace

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