Bibliographic record
Abstract
Vertex-centric block synchronous processing systems, exemplified by Pregel and Giraph, have received extensive attention for graph processing. These systems allow programmers to think only about operations that take place at one vertex and provide the underlying computation framework that involves multiple iterations (supersteps) with communication between neighboring vertices between supersteps. As graphs grow in size to billions of vertices and trillions of edges, processing them in this model face challenges: (1) The poor latency of supersteps dominated by the tasks performed on high degree vertices or densely connected components; and (2) The overwhelming network communication among vertices that can be proved of high redundancy. For many applications, approximate results are acceptable, and if these can be computed rapidly, they may be preferable. Many of the existing approximate solutions suffer from algorithm-specific designs that are not generic or lacking theoretical guarantees on the results' quality. In this paper we tackle this problem using a generic approach that can be incorporated into the graph processing platform. The approach we advocate involves communicating vertex states to a subset of the neighbors at each superstep; this is called selective edge lookup. We show how this approach can be incorporated into two primitive graph operators: BFS and DFS, which can be the basis of many graph analysis workloads. Extensive experiments over real-world and synthetic graphs validate the effectiveness and efficiency of the selective edge lookup approach.
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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 | 0.001 | 0.004 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.005 | 0.003 |
| Open science | 0.002 | 0.003 |
| Research integrity | 0.002 | 0.001 |
| Insufficient payload (model declined to judge) | 0.438 | 0.274 |
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".