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Record W3123744724 · doi:10.3406/reae.2002.1689

Willingness to pay for drinking water in the Sahara : the case of Douentza in Mali

2002· article· fr· W3123744724 on OpenAlexaff
Peter Calkins, Bruno Larue, Marc Vézina

Bibliographic record

VenueCahiers d Economie et sociologie rurales · 2002
Typearticle
Languagefr
FieldEconomics, Econometrics and Finance
TopicEconomic and Environmental Valuation
Canadian institutionsUniversité Laval
Fundersnot available
KeywordsHumanitiesPolitical sciencePhilosophy

Abstract

fetched live from OpenAlex

Consentement à payer pour de l'eau potable au Sahara : le cas de Douentza au Mali La présente étude compare deux méthodes de prévision du consentement à payer pour de l'eau potable dans des systèmes d'adduction en région semi-urbaine au Sahara. Les deux modèles sont estimés en fonction des caractéristiques hypothétiques de divers points d'adduction possibles. Le premier modèle, reposant sur une régression multiple, prévoit la somme d'argent qu'un ménage consentira à payer pour chaque seau d'eau potable provenant d'une source donnée. Le second modèle, employant une spécification de type logit, vise à expliquer la décision d'acheter ou non de l'eau potable. Les deux approches reposent sur le modèle de prix complets tel que proposé par la théorie de la demande. Ce modèle explique la quantité d'eau demandée en fonction des prix et du coût d'opportunité du temps affecté à la consommation. Dans nos modèles empiriques, la variable explicative qui s'avère la plus significative est la proximité de la nouvelle source prévue divisée par la distance à la meilleure source existante.

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)0.001
metaresearch head score (Gemma)0.006
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.334
Threshold uncertainty score0.663

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.006
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0010.002
Science and technology studies0.0010.001
Scholarly communication0.0020.001
Open science0.0010.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0030.000

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.

Opus teacher head0.165
GPT teacher head0.277
Teacher spread0.112 · 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 designObservational
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

Citations10
Published2002
Admission routes1
Has abstractyes

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