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Record W2952204419

Deep Lambertian Networks

2012· preprint· en· W2952204419 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

VenuearXiv (Cornell University) · 2012
Typepreprint
Languageen
FieldComputer Science
TopicAdvanced Vision and Imaging
Canadian institutionsUniversity of Toronto
Fundersnot available
KeywordsAlbedo (alchemy)Artificial intelligenceComputer scienceGenerative modelInvariant (physics)Computer visionPrior probabilitySurface (topology)Representation (politics)Latent variablePhotometric stereoObject (grammar)Pattern recognition (psychology)Image (mathematics)Generative grammarMathematicsGeometryBayesian probability
DOInot available

Abstract

fetched live from OpenAlex

Visual perception is a challenging problem in part due to illumination variations. A pos-sible solution is to first estimate an illumi-nation invariant representation before using it for recognition. The object albedo and surface normals are examples of such rep-resentations. In this paper, we introduce a multilayer generative model where the latent variables include the albedo, surface normals, and the light source. Combining Deep Be-lief Nets with the Lambertian reflectance as-sumption, our model can learn good priors over the albedo from 2D images. Illumina-tion variations can be explained by changing only the lighting latent variable in our model. By transferring learned knowledge from sim-ilar objects, albedo and surface normals es-timation from a single image is possible in our model. Experiments demonstrate that our model is able to generalize as well as im-prove over standard baselines in one-shot face recognition. 1.

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: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Methods · Consensus signal: none
Teacher disagreement score0.982
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 communication0.0000.001
Open science0.0020.003
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 head0.055
GPT teacher head0.193
Teacher spread0.139 · 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