qval

Qval is a term used in several domains to denote a numerical value tied to quality, performance, or calibration within a system. There is no single universally adopted definition for Qval; its meaning depends on the context in which it is used.

In computing and software engineering, Qval is commonly a field name or variable in data records that stores a quality score, reliability metric, or calibration value. It may appear in telemetry logs, configuration schemas, or data pipelines as a compact representation of a system's assessed quality at a given moment.

In statistics and data analysis, the initialism Qval can appear as a stand-in for a q-value in multiple-testing correction; however, the conventional term is q-value rather than Qval, and users should distinguish the two where precision is important.

In biology and imaging workflows, Qval-like scores may be produced by algorithms that assign confidence or quality to measurements, features, or detected events; such scores are often interpreted with thresholds to filter results.

Because Qval does not refer to a single recognized standard, readers should consult field-specific documentation or the metadata accompanying a dataset to understand its exact meaning and range (for example, whether higher values indicate better quality, and what the acceptable thresholds are).

See also: q-value, quality score, metric, calibration, data quality.