MétaCan
Menu
Back to cohort
Record W575002620

Performance Valuation Model for Urban Pavements

2009· article· en· W575002620 on OpenAlexaboutno aff
Colin Prang, Curtis Berthelot

Bibliographic record

VenueTransportation Research Board 88th Annual MeetingTransportation Research Board · 2009
Typearticle
Languageen
FieldEngineering
TopicInfrastructure Maintenance and Monitoring
Canadian institutionsnot available
Fundersnot available
KeywordsValuation (finance)Computer scienceWork (physics)Asset (computer security)Operations researchActuarial scienceEnvironmental economicsTransport engineeringBusinessEconomicsEngineeringFinance
DOInot available

Abstract

fetched live from OpenAlex

This paper summarizes the City of Saskatoon?s work in developing network level performance indicators for urban roadway networks with reporting that could be easily understood by politicians and the general public. Many years have been devoted to attempts at translating surface condition measures in to performance indicators. However, surface condition measures such as the International Roughness Index (IRI) were difficult for politicians and the general public to understand. The surface condition was also very dependent on the time of year that the data was collected. For instance, if collection occurred early in the year, certain roads would invariably be rated in worse condition due to spring thaw effects. This variability makes it difficult to track annual changes in condition of the networks. In fact, many have been observed to improve in condition without any work performed due to this variability. A more reliable evaluation tool was needed which could easily be understood with minimal or no roadway knowledge. With this criteria in mind, various asset valuation techniques were investigated. Many of the current methods such as straight line depreciation were rejected due to its inability to provide managers with the current value of the asset. The historical costs approach to valuation gives very little worth to old infrastructure assets, but is useful for valuing new assets. However, this method is not realistic because road infrastructure assets by their nature have sustainable value long after their intended ?design life?. Ultimately, a new method that uses probability distributions to account for variability in network value due to aging was developed. Treatment history and more important treatment sequencing have a significant affect on the long-term value of the assets.

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.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.002
metaresearch head score (Gemma)0.003
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.034
Threshold uncertainty score0.067

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0020.003
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0010.001
Science and technology studies0.0010.001
Scholarly communication0.0030.002
Open science0.0020.001
Research integrity0.0020.002
Insufficient payload (model declined to judge)0.0100.001

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.

Opus teacher head0.060
GPT teacher head0.356
Teacher spread0.297 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designSimulation or modeling
Domainnot available
GenreEmpirical

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".

Quick stats

Citations6
Published2009
Admission routes1
Has abstractyes

Explore more

Same venueTransportation Research Board 88th Annual MeetingTransportation Research BoardSame topicInfrastructure Maintenance and MonitoringFrench-language works237,207