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Improvement of Soil Texture Classification with LiDAR Data

2020· article· en· W3130445925 on OpenAlexaffabout
Rory Pittman, Baoxin Hu

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldEnvironmental Science
TopicSoil Geostatistics and Mapping
Canadian institutionsYork University
Fundersnot available
KeywordsSoil textureRandom forestTexture (cosmology)Support vector machineEnvironmental scienceFraction (chemistry)CovariateCanopySoil scienceImage textureRemote sensingLidarSoil waterMathematicsArtificial intelligenceComputer scienceStatisticsGeologyGeographyImage processingImage (mathematics)

Abstract

fetched live from OpenAlex

Models for the prediction of soil texture for the Abitibi River Forest (ARF) region in the District of Cochrane in Ontario, Canada were created from environmental covariates generated from remotely-sensed data as soil formation factors. A novel approach of incorporating LiDAR (Light Detection and Ranging) retrievals for the entire study area to derive covariates of canopy height model (CHM) and gap fraction was investigated. CHM and gap fraction had high variable importance for the soil texture models fitted for the region, with CHM being the most important variable out of a set of 104 predictors, and gap fraction among the top predictors. Random forest (RF) and support vector machine with radial basis functions (SVM Radial) approaches were utilized for the soil texture classification. The inclusion of CHM and gap fraction with other environmental predictors improved upon the accuracy of soil texture models, with accuracy scores exceeding 0.7 and Cohen's kappa greater than 0.5. Prediction maps for soil texture were generated for the ARF study region.

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.

How this classification was reachedexpand

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 score0.563
Threshold uncertainty score0.793

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)0.0010.000

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 head0.038
GPT teacher head0.238
Teacher spread0.200 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

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".

Quick stats

Citations1
Published2020
Admission routes2
Has abstractyes

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