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Record W2965585311 · doi:10.22215/etd/2017-11778

An Integrated Approach for Episodic Cognition Assessment

2017· dissertation· en· W2965585311 on OpenAlexafffund
R Bruce Wallace

Bibliographic record

Venuenot available
Typedissertation
Languageen
FieldHealth Professions
TopicOlder Adults Driving Studies
Canadian institutionsCarleton UniversityBruyère
FundersCanadian Institutes of Health ResearchMitacsToronto Rehabilitation InstituteUniversity of ManitobaNatural Sciences and Engineering Research Council of CanadaOttawa Hospital Research Institute
KeywordsCognitionTask (project management)DementiaPsychologyExecutive functionsIdentification (biology)ElectroencephalographyCognitive psychologyWork (physics)Activities of daily livingComputer scienceMedicineEngineeringPsychiatry

Abstract

fetched live from OpenAlex

Dementia and Mild Cognitive Impairment (MCI) are significant health issues that are a rising cost to society.They are monitored with cognitive tests during clinical appointments that are limited by the healthcare system capacity and patient's ability/willingness to attend.Current cognitive tests use behavioural measures and not direct measures of underlying cellular change.This causes delay in identification through a patient's ability to compensate (reminder notes) to mask symptoms.This work presents measurement methods for cognition between clinical appointments using an integrated approach for episodic cognition assessment.Methods assess the patient during Instrumental Activities of Daily Living (IADL) within an episodic measurement framework.Electroencephalogram (EEG) / Event Related Potential (ERP) methods are presented as an emerging alternative means to detect changes in the brain.Recent consumer EEG devices make at home use a future possibility.ERP features for healthy and MCI volunteers are defined, analyzed and machine learning identified two features to distinguish the two cases with 1 False Positive and 1 False Negative error in a group of 32 subjects.The measurement of two IADLs is presented: Computer game play and Driving.Two games were developed and piloted with MCI volunteers showing they could indicate cognitive change.The work presents game design needs including hint and measurement subsystems.Driving is a complex task that combines executive cognitive tasks (navigation) with over-learned cognitive tasks (turn signal use).The work presents measures of driving behavior creating a driver unique signature.Machine learning techniques show that the features will allow two drivers of a shared vehicle to be distinguished from each other with an error rate as low as 1.5%.Navigational performance measures are presented for driver trip planning to indicate executive function supervisors

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)0.002
metaresearch head score (Gemma)0.002
Version: metacan-v3-hybrid-931329e0061cValidation 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: none
Teacher disagreement score0.003
Threshold uncertainty score0.011

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0020.002
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0000.000
Scholarly communication0.0020.001
Open science0.0010.001
Research integrity0.0000.001
Insufficient payload (model declined to judge)0.0030.001

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 head0.093
GPT teacher head0.501
Teacher spread0.409 · 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 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
Published2017
Admission routes2
Has abstractyes

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