Metrika

Metrika, from the Russian metrika meaning metric, is a term used in multiple disciplines to refer to a measure or distance function as well as to services and products named after this concept. In mathematics, metrika denotes a metric: a function d that assigns a non‑negative real number to pairs of points in a set and satisfies non-negativity, identity of indiscernibles, symmetry, and the triangle inequality. A set equipped with a metric is called a metric space, which induces a topology and defines notions such as convergence, continuity, and distance. Common examples include the Euclidean metric, the Manhattan (L1) metric, and the maximum (L∞) metric. Metrics may be defined on various objects, including sequences, functions, and points on manifolds.

Yandex.Metrika is a web analytics service provided by the Russian tech company Yandex. It collects data about website visitors and their interactions to produce statistics on traffic, engagement, and audience behavior. Notable features include page views, visits, unique users, bounce rate, and goal conversions, as well as event tracking, traffic sources, and behavior reports. It offers real-time statistics, heatmaps and scroll maps, and provides data export via an API for integration with other systems. Yandex.Metrika competes with other analytics platforms and is widely used in Russian-speaking markets. Privacy and data governance options vary by jurisdiction and implementation, including settings related to data retention and user consent.

In broader usage, metrika is the transliteration of the concept of metric in various contexts, referring to measurement scales, performance indicators, or evaluation criteria used across science, engineering, and business.