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Record W2299363250

Analysis of peripheral blood mononuclear cell data for finding a cellular signature of graft-versus-host disease

2008· dissertation· en· W2299363250 on OpenAlexfundno aff
Yunfeng Dai

Bibliographic record

VenueSummit (Simon Fraser University) · 2008
Typedissertation
Languageen
FieldComputer Science
TopicDigital Imaging for Blood Diseases
Canadian institutionsnot available
FundersBC Cancer AgencySimon Fraser University
KeywordsPeripheral blood mononuclear cellPeripheral bloodSignature (topology)Host (biology)PeripheralImmunologyMedicineCellDiseaseGraft-versus-host diseaseComputational biologyBiologyComputer sciencePathologyMathematicsGeneticsInternal medicineIn vitro
DOInot available

Abstract

fetched live from OpenAlex

GvHD is the most important complication of BMT. It has high morbidity and mortality. In an attempt to provide early prediction of GvHD, we analyzed PBMC data, together with GvHD outcome information, from a group of patients who underwent BMT. Various statistical methods were applied to overcome the difficulty arising from the high-dimensional longitudinal observations but with relatively small sample size. Analysis of “windowlized” data at a fixed time point did not find one subtype of PBMC or a subset of PBMCs that was important in the prediction of aGvHD. longitudinal data analysis indicated that proportions of T_ cells over time might separate well the patients with aGvHD and without aGvHD. This is consistent with the main finding in Lee (2006). In addition, we considered a two-level hierarchical model to describe the proportions of PBMCs. It indicates that T_cells CD3-CD8bdimCD8- is marginally associated with and disease.

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)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.518
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.001
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0020.003
Science and technology studies0.0000.000
Scholarly communication0.0000.001
Open science0.0040.001
Research integrity0.0000.000
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 head0.018
GPT teacher head0.230
Teacher spread0.212 · 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 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

Citations0
Published2008
Admission routes1
Has abstractyes

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