estimation
Let an agent explain estimation as a reasoning process and technique, relay statistical, engineering, forensic and management methods from reference sources, describe how uncertainty is expressed, and distinguish estimation from measurement, guessing, prediction and the valuation sense.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain estimation as a reasoning process and technique, relay statistical, engineering, forensic and management methods from reference sources, describe how uncertainty is expressed, and distinguish estimation from measurement, guessing, prediction and the valuation sense.
The process of finding an approximate value or judgement when exact measurement is impossible or impractical, from visual estimation of size and quantity to formal statistical parameter and density estimation, effort estimation in project management, forensic age estimation and time of death determination, and engineering and cost estimates; estimation combines reasoning, technique and stated uncertainty.
What it is for: Producing approximate values with stated uncertainty.
It can be explain the concept; relay methods by field; describe uncertainty; distinguish related concepts.
Distinguishing features
Approximation
Method and uncertainty
Cross-field
Formal and informal
What it looks like
Not a visible object; a reasoned approximation.
Physical character
Fermi estimation: order of magnitude reasoning note
statistical estimators: unbiased, consistent, efficient list - properties
time of death methods: temperature, rigor, lividity, entomology list
How it is recognised
Approximate value by reasoning
Visual estimation, parameter estimation, density estimation, effort estimation, age estimation, time of death determination
Measurement uses instruments; guessing lacks method; prediction concerns the future; valuation is monetary
Related models
is a kind of - in registry terms
is a kind of - in registry terms
is a kind of - in registry terms
is contrasted with - which uses instruments
In practice
Families and kinds
everyday and visual estimation
Fermi and order-of-magnitude estimation
statistical parameter and density estimation
effort and cost estimation in projects
forensic age and time of death estimation
engineering and scientific estimates
Standards and regulation
Statistical standards for estimators and uncertainty
Project estimation standards such as those of PMI
Forensic practice standards for age and time of death estimation
Failure modes and hazards
Overconfidence and unstated uncertainty
Confusing estimation with measurement or guessing
Registry aliases mixing unrelated fields
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What estimation is.
Definition.
Definition
Definition.
Definition
Definition.
- What is estimation, and how does it differ from measurement, guessing, prediction and valuation? definition
- Is the question about the concept, a field or a specific method? boundary
Kinds
Kinds.
Kinds
Kinds.
- What are visual, Fermi, statistical, effort, age and time of death estimation? definition
- Which entry fits the specific kind? action
Statistics Statistical estimation.
Science.
Estimators
Estimators.
Estimators
Estimators.
- How do point and interval estimators work, and what are bias, consistency and efficiency? provenance
- Which references are standard? provenance
Density
Density estimation.
Density
Density.
- How do histograms and kernel methods estimate densities? provenance
- Which sources are cited? provenance
Practice Applied estimation.
Practice.
Projects
Effort and cost.
Projects
Projects.
- How are effort and cost estimated in projects, and why are they often wrong? action
- Which entry fits software development effort estimation? action
Forensic
Forensic estimation.
Forensic
Forensic.
- How do forensic scientists estimate age and time of death, in general terms? provenance
- Which entry fits forensic pathology? action
Context Cognition and history.
Context.
Cognition
Human estimation.
Cognition
Cognition.
- How do people estimate quantities, and what biases affect them? provenance
- Which entry fits numerical cognition? action
History
History.
History
History.
- How did estimation theory develop from Gauss and Fisher onward? provenance
- Which entry fits the history of statistics? action
What the second pass must settle
- Should parameter estimation, effort estimation and forensic estimation be separate primary entries?
- How should reference sources be linked?
- The registry entry has merged aliases naming methods from unrelated fields; should they be split off?