Using multi-attribute transforms to predict log properties from seismic data
Why this work is in the frame
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Bibliographic record
Abstract
In this paper, a new method for predicting well log properties from seismic data is described. The analysis data consists of a series of target logs from wells which tie a 3-D seismic volume. The objective is to derive a multi-attribute transform, linear or nonlinear, between a subset of the attributes and the target log values. The selected subset is determined by a process of forward step-wise regression, which derives increasingly larger subsets of attributes. In the linear mode, the transform consists of a series of weights, which are derived by least-squares minimisation. In the non-linear mode, an artificial neural network is used. Cross-validation is used to estimate the reliability of the derived multi-attribute transform.This method is applied to a real data set. We see a continuous improvement in prediction power as we progress from singleattribute regression to linear multi-attribute prediction to neural network prediction. This improvement is evident not only on the training data, but more importantly, on the validation data. In addition, the neural network shows a significant improvement in resolution over that from linear regression.
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Full frame distilled prediction
Teacher imitationNot 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.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.002 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it