MétaCan
Menu
Back to cohort
Record W4390720380 · doi:10.1017/9781009299909.007

Variational Inference

2024· book-chapter· en· W4390720380 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueCambridge University Press eBooks · 2024
Typebook-chapter
Languageen
FieldComputer Science
TopicGaussian Processes and Bayesian Inference
Canadian institutionsUniversity of Toronto
Fundersnot available
KeywordsInferenceEstimatorBayesian inferenceDivergence (linguistics)Computer scienceKullback–Leibler divergenceNonlinear systemApplied mathematicsGaussianBayesian probabilityArtificial intelligenceMathematicsAlgorithmMathematical optimizationMachine learningStatistics

Abstract

fetched live from OpenAlex

This chapter takes a step back and revisits nonlinear estimation through the lens of variational inference, another concept common in the machine learning world. Estimation is posed as minimizing a data-likelihood objective, the Kullback-Leibler divergence between a Gaussian estimate and the true Bayesian posterior. We follow through the consequences of this starting point and show that we can arrive at many of the algorithms presented earlier through appropriate approximations, but can also open the door to new possibilities. For example, a derivative-free batch estimator that uses sigmapoints is discussed. Variational inference also provides a principled approach to learning parameters in our estimators from training data (i.e., parameters of our motion and observation models).

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.

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: Not applicable · Consensus signal: none
GenreCandidate signal: Other · Consensus signal: Other
Teacher disagreement score0.977
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0020.001
Research integrity0.0000.001
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 head0.019
GPT teacher head0.204
Teacher spread0.186 · 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