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Record W2920599720 · doi:10.11575/prism/36156

Automating geoprocessing tasks to create city wide layers

2019· article· en· W2920599720 on OpenAlexaboutno aff
Renna Truong

Bibliographic record

VenuePRISM (University of Calgary) · 2019
Typearticle
Languageen
FieldEngineering
Topic3D Modeling in Geospatial Applications
Canadian institutionsnot available
Fundersnot available
KeywordsGeoprocessingComputer scienceWorld Wide WebGeographyCartography

Abstract

fetched live from OpenAlex

Annually, Spatial and Numeric Data Services (SANDS) receives 434 Digital Aerial Survey (DAS) datasets, in AutoCAD format, from the City of Calgary. Each dataset covers an Alberta Township System (ATS) section (Figure 1) and is made up of five layers containing “surface features and topography” information “derived from 1:5000 aerial photos”1. University of Calgary students regularly utilize these files in their research, however, in some cases they are looking for specific features covering an area much larger than an ATS section and in a more geographic information system (GIS) friendly format. To derive city wide products, from the DAS files, required reiterating through numerous geoprocessing operations. These repetitive and time consuming tasks were automated and accomplished within a day, using Python and ArcPy, instead of weeks if executed manually. The next section details the steps that were taken to create the outputs.

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 machine prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.005
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: none
GenreCandidate signal: Methods · Consensus signal: Methods
Teacher disagreement score0.024
Threshold uncertainty score0.081

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.005
Meta-epidemiology (narrow)0.0020.001
Meta-epidemiology (broad)0.0010.002
Bibliometrics0.0030.004
Science and technology studies0.0010.001
Scholarly communication0.0050.002
Open science0.0020.003
Research integrity0.0010.002
Insufficient payload (model declined to judge)0.0240.019

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 head0.008
GPT teacher head0.187
Teacher spread0.179 · 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 source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designNot applicable
Domainnot available
GenreMethods

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".

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Citations0
Published2019
Admission routes1
Has abstractyes

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