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Record W4237200619 · doi:10.22215/etd/2014-10375

Observable 2D SLAM and Evidential Occupancy Grids

2014· dissertation· en· W4237200619 on OpenAlexaff
Sindhu Radhakrishnan

Bibliographic record

Venuenot available
Typedissertation
Languageen
FieldEngineering
TopicRobotics and Sensor-Based Localization
Canadian institutionsCarleton University
Fundersnot available
KeywordsObservabilityOccupancy grid mappingExtended Kalman filterSimultaneous localization and mappingObservableArtificial intelligenceComputer scienceKalman filterState (computer science)OccupancyBayesian probabilityDempster–Shafer theoryMathematicsMobile robotRobotEngineeringAlgorithm

Abstract

fetched live from OpenAlex

The two main challenges offered by Simultaneous Localization and Mapping (SLAM) are that of observability and extending state estimation to exploration.This thesis explores and uses solutions to render the SLAM problem observable, by proposing the Reconfigurable Extended Kalman Filter (EKF) that addresses imposing observability, maintaining observability and choice of observability constraints.Additionally, Bayesian theory and Dempster-Shafer theory of evidential reasoning are analyzed, and Occupancy grid based maps based on Dempster-Shafer theory of evidential reasoning are created and analyzed in large environment for their potential use in exploration and obstacle avoidance.Tackling both issues with different algorithms yield better solutions to the challenges offered by robotic exploration, and this is demonstrated through simulation results in representative environments.To my amazing parents, who taught me the value of hard work, patience and perseverance.I am very grateful to my advisor, Dr.V. Aitken for being a kind and patient teacher.Dr.L.Tabrizi, whose teaching left me in awe of control systems, has been and will continue to be an inspiring role model.I will always cherish how Rytis.V gently pushed me to work harder, learn better, and to see things from a new perspective

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)0.003
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.002
Threshold uncertainty score0.005

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.003
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0000.001
Bibliometrics0.0000.001
Science and technology studies0.0000.001
Scholarly communication0.0010.002
Open science0.0010.002
Research integrity0.0010.001
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 head0.008
GPT teacher head0.213
Teacher spread0.205 · 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 designSimulation or modeling
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
Published2014
Admission routes1
Has abstractyes

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