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Record W7162038768 · doi:10.82308/43396

Station and city level modelling of bike-sharing system for Montreal

2021· dissertation· en· W7162038768 on OpenAlexaboutno aff
Mojdeh Sharafi

Bibliographic record

Venuenot available
Typedissertation
Languageen
FieldSocial Sciences
TopicUrban Transport and Accessibility
Canadian institutionsnot available
Fundersnot available
KeywordsCyclingTRIPS architectureRegression analysisMode (computer interface)Affect (linguistics)Plan (archaeology)Climate changeDriving factors

Abstract

fetched live from OpenAlex

As an emerging mode of sustainable urban mobility, bike-sharing systems (BSS) have prevailed in North America in the past decade. As a result, there is a growing need to design and plan BSS to fit the unique urban transportation system of each city. This task, however, requires a deep understanding of how diverse factors such as built environment, land use, and weather conditions affect cycling behavior. To understand BSS user's general behavior with Montreal's weather condition, we first looked at the total number of BSS cyclists of the city. However, while some of the factors can impact the entire city, others can affect the riders locally. Considering the local impact of the factors can further help planners to realize the possible deficiencies more fundamentally. Thus, this study was performed on the bike-sharing ridership in two different levels of analysis:In the first section, we performed a city-level investigation of how weather variables affect the cycling behavior of BSS users. In particular, we perform three regression analyses to understand how various weather variables such as temperature, rain, and humidity interact with the daily ridership in Montreal using the trip data provided by BIXI. The average daily temperature was the most influential weather factor on the number of cyclists. Additionally, a higher level of temperature elasticity was found for the trips on the weekends than on the weekdays. The city-level analysis was then projected to the next four decades to study the possible effect of climate change on cycling behavior as a common physical activity. This was achieved by using the developed regression models and future climate data obtained from state-of-the-art regional climate models for two emission scenarios. Results suggest a general increase in the number of users, which is particularly prominent for the shoulder months of April and October and is primarily due to the future warmer temperatures.The second part of this thesis focuses on further understanding how the built environment, land use, and weather factors jointly affect cycling behavior. In doing so, a spatiotemporally weighted regression model was developed for the daily ridership data at station level. This is achieved by integrating weather variables into the temporal dimension and built environment and land-use related variables in the spatial dimension. The spatiotemporal regression model enabled tracking the influence of each factor through both time and space. Spatial factors like parks, bike lanes, and commercial places demonstrated a more positive effect on weekends throughout the year. On the other hand, factors such as closeness to metro stations, walkscore, and the capacity of bicycle stations, had a more positive impact on weekdays. As for the weather variables, temperature was also found to have a high positive effect throughout the year, with a higher impact on the weekends and recreational stations of Old Port, Montreal Olympic Park, and Jeanne-Mance park. Furthermore, in this study, we also expanded on the previous modelling with spatial-varying coefficients. By including the temporal variables of weather parameters over the period of consideration, the spatiotemporal model contributes to a more robust regression model for predicting station ridership

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)0.000
metaresearch head score (Gemma)0.001
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: Empirical
Teacher disagreement score0.172
Threshold uncertainty score0.346

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0010.001
Science and technology studies0.0010.000
Scholarly communication0.0010.000
Open science0.0010.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0060.001

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 head0.116
GPT teacher head0.334
Teacher spread0.219 · 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".

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Citations0
Published2021
Admission routes1
Has abstractyes

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