Why this work is in the frame
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Bibliographic record
Abstract
We propose a kernel k-means based unsupervised clustering algorithm. The kernel k-means approaches require finding not only the Correct Number of Clusters (CNC) but also the optimum kernel function parameters in the clustering procedure. Existing index validation approaches use a criterion different from the k-means criterion to find the optimum CNC and also choose kernel parameter by trial and error. The proposed algorithm denoted by kernel k-Minimum Average Central Error (Kernel k-MACE), estimates the CNC while simultaneously providing the optimum value of the Gaussian kernel parameter. The advantage of the method in theory is in its consistency in using only one criterion for all the three steps of clustering, CNC estimation, and kernel function parameter estimation. A novel cluster initialization technique enables Kernel k-MACE to converge in less iterations compared to the existing approaches. Simulation results illustrate superiority of Kernel K-MACE over multiple state-of-the-art unsupervised clustering methods for both real data sets and self-generated data sets having 10%-50% overlap. The method outperforms the existing methods by not only providing more accurate CNC estimates, but also by providing better clustering results evaluated by Adjusted Random Index (ARI) and Normalized Variation Index (NVI).
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 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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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.
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