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Record W4243025980 · doi:10.1002/047147844x.wr168

Water Demand Forecasting

2004· other· en· W4243025980 on OpenAlexaff
Steven Renzetti

Bibliographic record

VenueWater Encyclopedia · 2004
Typeother
Languageen
FieldEngineering
TopicWater resources management and optimization
Canadian institutionsBrock University
Fundersnot available
KeywordsVariable (mathematics)PopulationEconometricsPer capitaWater useProduct (mathematics)VariablesWater resourcesStatisticsMathematicsEcology

Abstract

fetched live from OpenAlex

Abstract There are several issues surrounding the general practice of water demand forecasting. Boland (1) points out that any forecast has two essential components: explanation and prediction: “Explanation of water use usually takes the form of a model that relates the past observed level of water use to various variables. Replacing past values of the explanatory variables with those expected in the future produces a prediction of future water use” (pp. 162–163). Historically, the first of these two tasks—explaining water use—has been done by using ‘fixed‐coefficient’ models. In this approach, it is assumed that water use is related to a single explanatory factor such as population and, further, that the relationship between water use and population is a fixed, proportional one. Dziegielewski (2), for example, provides a brief review of the history of urban water demand forecasting and demonstrates that, in the ‘traditional’ method of forecasting, total future demand is predicted as the product of expected population growth and a fixed per capita water use coefficient. This method was subsequently refined by disaggregating total water use by user classes, area, and time period. The fundamental forecasting method remained the same, however; ‘unit water use coefficients’ is multiplied by the projected growth in a particular user group in a specific location. The fundamental shortcoming of the fixed coefficient approach is that it fails to anticipate changes in the relationship between water use and the dominant explanatory variable that may arise from changes in other, neglected variables. For example, forecasts of residential water use that are based on the number of households in an area may overstate future water demands if they neglect the impacts of rising water prices. More recently, more complex models have sought to estimate statistically the relationship between water use and a set of explanatory variables, including water prices.

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 distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesInsufficient payload (model declined to judge)
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: Not applicable
GenreCandidate signal: Other · Consensus signal: Other
Teacher disagreement score0.147
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0030.002

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 head0.008
GPT teacher head0.172
Teacher spread0.164 · 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; both teacher heads agree on what is shown here.

Study designNot applicable
Domainnot available
GenreOther

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

Citations1
Published2004
Admission routes1
Has abstractyes

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