Methodology

LOGIbook is built to one rule: the number on the page is the number in the source. Here is how that is achieved.

One sourced snapshot

Every release is built from a single, dated snapshot of the underlying datasets. The page you read and the article that describes it are generated from the same rows of that snapshot — so a figure can never differ between a chart and its prose. There is no second derivation to drift out of sync.

Refreshed each quarter

LOGIbook is rebuilt on a roughly quarterly cycle: as the registries behind it publish new editions, we take a fresh dated snapshot and regenerate every page from it. The cadence follows each source's own rhythm — a register revised once a year is picked up at its next annual release, one that updates more often is captured at the next quarterly rebuild — so every figure tracks the publication schedule of the body that maintains it, and the edition we built from is shown alongside the value.

Provenance on every figure

Each value carries the body that published it and the year it refers to. Counts that LOGIbook computes (for example, the number of seaports) are attributed to LOGIbook counting a named register; values a publisher reports (such as a Logistics Performance Index score) are attributed to that publisher. The distinction is shown, never blurred.

Multiple sources, shown together

Where more than one credible source describes the same thing, LOGIbook consolidates them and shows each with its own attribution, rather than silently choosing one. We do not claim one source "replaces" another, and we do not average away the disagreement.

No editorial layer

LOGIbook does not interpret, rank or score, and never authors the underlying data. Translations render the same facts in another language; they do not add narrative. Opinion-based indices are excluded.

Green-zone sources only

Every dataset is verified at its source to be openly licensed for reuse. Sources whose terms do not permit reuse are dropped rather than shown — even where that leaves a gap.

Conditional, never padded

A page is built only from the data a country actually has. A nation with no ports has no ports section; a data-thin territory shows fewer sections, not placeholder text. Empty is shown as empty, with the source that would carry the figure named.

See the Sources page for the registries behind each vertical, and Licensing for their terms.