Automatic Behavior Analysis and Understanding of Collision Processes Using Video Sensors
Bibliographic record
Abstract
RESUME La securite routiere est un des problemes de societe les plus importants a cause des multiples impacts et couts des accidents de la route. Traditionnellement, le diagnostic de securite repose principalement sur les donnees historiques de collision. Cette approche reactive mene a remedier au probleme de securite apres que ses impacts sur la societe soit deja realises. Les analystes de la securite et les decideurs doivent attendre jusqu'a ce qu'un nombre suffisant de collisions (ce qui demande d’attendre habituellement au moins trois ans) soit collecte pour analyser ou mettre en place des mesures d’amelioration de la securite routiere. Les methodes substituts (« surrogate ») d'analyse de la securite constituent une approche alternative proactive qui s'appuie sur l'observation d’evenements « dangereux » sans collision, souvent appele accidents « evites de justesse » (« near misses ») ou « conflits ». Parmi ces approches, les techniques de conflits de trafic (TCT) reposent sur la collecte des donnees de conflit par des observateurs sur le terrain qui interpretent leur severite. Par consequent, les TCT souffrent des variations de jugement des observateurs, de la difficulte de mesurer les indicateurs de securite en temps reel par les observateurs, et du cout de la collecte des donnees.----------ABSTRACTTraffic safety is one of the most important social issues due to the multiple costs of collisions. Traditionally, safety diagnosis depends mainly on historical collision data. This reactive approach leads to remedy the existing safety problem after the materialization of the induced social cost. Safety analysts and decision makers must wait till a sufficient number of collisions (typically at least 3 years of collision data) is collected to analyze and to devise countermeasures. Surrogate safety analysis is an alternative and proactive approach that relies on the observation of traffic events without a collision, in particular “unsafe” events often called “near misses” or “conflicts”. Among these approaches, traffic conflict techniques (TCT) rely mainly on field observers to identify conflicts and interpret their severity. Consequently, TCTs suffer from the variations of observer judgement, the cost of collecting conflict data, and the difficulty of measuring safety indicators in real time by the observers.
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How this classification was reachedexpand
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) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.003 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".