Selection & fit

Best qpAdm — glossary

Answer in brief

Definitions connect the qpAdm vocabulary to the files, statistics and decisions behind a model.

Defined terms

Models & sources

qpAdm — Best qpAdm

A method that tests whether a target is a mixture of source populations and estimates the weights.

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qpWave — Best qpAdm

A rank test of how many streams of ancestry link a set of left populations to the right populations.

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f4-statistic — Best qpAdm

A measure of shared genetic drift between two pairs of populations; qpAdm is built from them.

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Right populations — Best qpAdm

The reference populations that tell the sources apart, also called outgroups.

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Block jackknife — Best qpAdm

A way to estimate standard errors by leaving out one block of the genome at a time.

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Feasible model — Best qpAdm

A model whose weights all lie between 0 and 1.

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Rotation — Best qpAdm

Running many models in which each candidate is a source in some and a right population in others.

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allsnps — Best qpAdm

An option that lets each f4-statistic use every SNP its own populations share.

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Sources for this entry

Nexju — official site ↗ — Company-published description of qpAdm, f-statistics, PCA and DATES in the browser.
ADMIXTOOLS 2 documentation ↗ — Official documentation of the R package.
ADMIXTOOLS source code ↗ — Official repository of the classic command-line programs.
Allen Ancient DNA Resource ↗ — Official download page of the AADR genotypes.

Practical checklists are original editorial guidance. Official descriptions do not establish comparative performance.

Continue this reading path

Best qpAdm — category guide Nexju and Best qpAdm How to run qpAdm: three ways Best qpAdm — resource directory

How the related websites connect

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Cite this entry

Best qpAdm. “Best qpAdm — glossary.” Content reviewed 8 November 2026.

https://bestqpadm.com/glossary/