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Record W2279979045

A geovisual analytics approach to spatial and visual feature organization and exploration

2013· dissertation· en· W2279979045 on OpenAlexfundno aff
Md. Asikur Rahman

Bibliographic record

VenueMemorial University Research Repository (Memorial University) · 2013
Typedissertation
Languageen
FieldComputer Science
TopicData Visualization and Analytics
Canadian institutionsnot available
FundersNatural Sciences and Engineering Research Council of CanadaMemorial University of NewfoundlandStrong
KeywordsScrollingSonarComputer scienceZoomCluster analysisField (mathematics)Feature (linguistics)GeovisualizationSpatial analysisGeographyCartographyArtificial intelligenceComputer visionVisualizationData miningInformation visualizationRemote sensingEngineering
DOInot available

Abstract

fetched live from OpenAlex

Marine sonar data sets often cover large spatial regions and consist of many hundreds of thousands of sonar pings. The visual representations of the sonar data (echograms) are normally shown as long and narrow ribbons of data. The main challenge with analyzing sonar data using echograms is that the ratio of the length to the height can be very high. As analysts zoom in to show the echogram in sufficient detail, much of the contextual information is lost and horizontal scrolling is necessary to explore and compare the data. In this thesis, a novel approach is proposed that couples a technique for visually clustering slices of the echogram based on visual similarity, with a geovisualization method that shows the spatial location of echogram slices on a virtual globe. A field trial with real-world data analysts was conducted and the results of the field trial illustrate the benefits of this approach.

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)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow), Science and technology studies, Scholarly communication
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.642
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.001
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0020.003
Science and technology studies0.0020.000
Scholarly communication0.0010.002
Open science0.0010.001
Research integrity0.0010.001
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 head0.028
GPT teacher head0.279
Teacher spread0.251 · 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.

Study designNot applicable
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

Citations0
Published2013
Admission routes1
Has abstractyes

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