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Separating scale-specific soil spatial variability: A comparison of multi-resolution analysis and empirical mode decomposition

2013· article· en· W2045609274 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
fundA Canadian funder is recorded on the work.

Bibliographic record

VenueGeoderma · 2013
Typearticle
Languageen
FieldEnvironmental Science
TopicSoil Geostatistics and Mapping
Canadian institutionsUniversity of SaskatchewanMcGill University
FundersCommonwealth Scientific and Industrial Research OrganisationUniversity of Saskatchewan
KeywordsHilbert–Huang transformTransectScale (ratio)WaveletSpatial variabilityMode (computer interface)Spatial ecologyMathematicsWavelet transformSeries (stratigraphy)Image resolutionEnvironmental scienceStatisticsSoil scienceRemote sensingGeologyComputer scienceArtificial intelligenceGeographyCartographyEcology

Abstract

fetched live from OpenAlex

Soil spatial variability is scale dependent. In separating soil spatial variability at multiple scales, wavelet based multi-resolution analysis (MRA) is an established method, whereas empirical mode decomposition (EMD) has just been introduced in soil science. A careful comparison between these methods is necessary and is the goal of this research. Here a brief description of the methods is provided and they are compared using soil water storage (SWS) data observed along a 576 m transect. The MRA separated the variations of a spatial series into predefined scale intervals, each of which contributed differently to the overall variance of the series. EMD separated the overall variation into different mode functions (known as Intrinsic Mode Functions; IMFs) representing different scales as they are present in the series. The EMD did not use any predefined basis (such as mother wavelet in wavelet transform) for scale separation. The proportion of overall variance contributed at each scale was used to identify the most dominant scale. Correlation between the scale components (MRA products and IMFs) and different factors controlling SWS along the transect enabled identification of the dominant controls of SWS and the scales at which they occur.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.460
Threshold uncertainty score0.920

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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.

Opus teacher head0.025
GPT teacher head0.338
Teacher spread0.313 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it