Methodology
How notices are collected and classified
Our aim is to make discovery faster without obscuring the official source or overstating what the underlying data contains.
Source and update cycle
Biderra reads openly reusable notice data from the TED portal. Current-day notices are checked every hour. The active search and directory views use a rolling 90-day window; indexed detail records are retained for up to two years so published reference links remain stable. During the initial public rollout, earlier non-medical sectors are being filled progressively.
Sector classification
Each notice is assigned to one broad sector from its primary Common Procurement Vocabulary (CPV) code. The groups are intended for discovery, not legal classification. Examples include technology, construction, energy, transport, medical, pharmaceutical and laboratory, environmental, education and business services.
Language handling
The interface follows the selected browser language. A notice title is shown in that language when TED supplies it; otherwise Biderra displays the official English title and marks the fallback. Biderra does not currently machine-translate legal notice text.
Values and deadlines
Estimated values are displayed in the currency published by the buyer and are not converted. When no procedure value is available, the largest published lot may be shown. Deadline information can change, and the official notice remains decisive.