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Record W7133077768

A data mining framework for AVM treatment planning in radiosurgery

2007· dissertation· W7133077768 on OpenAlexfundaboutno aff
Abida Raouf

Bibliographic record

VenueTSpace · 2007
Typedissertation
Language
FieldMedicine
TopicVascular Malformations Diagnosis and Treatment
Canadian institutionsnot available
FundersUniversity of Toronto
KeywordsRadiosurgeryRadiation treatment planningBayesian networkData setSet (abstract data type)Outcome (game theory)Decision treeArteriovenous malformation
DOInot available

Abstract

fetched live from OpenAlex

An outcome prediction system has been designed that can model the effect of multiple Arteriovenous Malformation (AVM) prognostic factors on stereotactic radiosurgical outcome. This system is adaptive allowing refinement in outcome predictions with the accrual of patient data. Bayesian network models (Naive Bayes, Tree Augmented Naive Bayes, Chow Liu and Domain Knowledge based) were trained on a data set containing information on 202 patients who underwent radiosurgery at Sunnybrook hospital in Toronto. These trained models form the core of the system and their predictions can be subsequently updated as new patient data is acquired. Additional system features include the provision of an electronic patient record for data collection. Variable dependency diagrams output by the system aid in disease understanding. As well, validation tools built into the system permit assessment of prediction accuracy over time. This thesis also outlines the results of analyzing quality of life data of AVM patients undergoing radiosurgery.

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)0.004
metaresearch head score (Gemma)0.006
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: none
GenreCandidate signal: Methods · Consensus signal: Methods
Teacher disagreement score0.019
Threshold uncertainty score0.038

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0040.006
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.002
Bibliometrics0.0030.002
Science and technology studies0.0010.001
Scholarly communication0.0030.002
Open science0.0020.001
Research integrity0.0010.002
Insufficient payload (model declined to judge)0.0010.001

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 head0.143
GPT teacher head0.473
Teacher spread0.330 · 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
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".

Quick stats

Citations0
Published2007
Admission routes2
Has abstractyes

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