Mobile services discovery and selection in the publish/subscribe paradigm
Bibliographic record
Abstract
In a publish/subscribe paradigm, user service discovery requires matching user preferences to available published services, e.g., a user may want to find if there is a Chinese restaurant close by. This is a difficult problem when users are mobile, wirelessly connected to a network, and dynamically roaming in different environments. The magnitude of the problem increases with respect to the number of attributes for each users' preference criteria, as matches must be done in real-time. We present an algorithm that uses Singular Value Decomposition to encode each service properties in a few values. Users' preference criteria are matched by using the same encoding to produce a value that can be rapidly compared to those of the services. We show that reasonable matches can be found in time O(m log n) where n is the number of publications and m the number of attributes in the preference criteria (subscription). This is in contrast to 'approximate nearest neighbor' techniques, which require either time or storage exponential in m.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.004 | 0.010 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.003 | 0.001 |
| Bibliometrics | 0.002 | 0.005 |
| Science and technology studies | 0.003 | 0.002 |
| Scholarly communication | 0.004 | 0.006 |
| Open science | 0.002 | 0.003 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.003 | 0.002 |
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
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".