Where does search visibility diverge from AI citation?
A field note on why German sites that rank well in search may be absent, weakly cited, or differently framed inside AI answers.
Research notes
A growing record of answer behavior
The research index collects field notes on how AI answer engines represent German companies, categories, regions, and source sets. Materials are grouped by citation path, query language, source type, and error pattern, so a reader can follow the evidence instead of skimming claims. New pieces appear only when repeated observations are strong enough to publish with useful caution and clear uncertainty marks.
Does bilingual DE/EN content widen citation coverage?
A field note on when bilingual German and English content expands AI citation paths, and when it distorts the category a company wants to carry.
How do answers confuse German brands?
A classification of German brand confusion in AI answers, from name merging and category borrowing to unsupported labels.
When does a cited German page disappear?
A field note on citation persistence, source replacement, and why one visible citation should not be treated as durable AI visibility.
How compounds and umlauts change German AI retrieval
A field note on German compounds, umlaut variants, English paraphrases, and the category drift they can introduce in AI answers.
How Accurate Are AI Answers About German Local Businesses?
A field note on category, region, service scope, and missing context in AI answers about German local businesses.
Do major-city firms replace regional firms?
A study of how German AI answers can favor major-city providers when regional queries ask for plausible local options.
Does llms.txt Appear in German Citation Behavior?
A cautious field test of llms.txt as one observable site condition, not a promised route into German AI answers.
Are encyclopedia sources treated differently in German AI citation?
A field note on Wikipedia, Wikidata-style entries, and whether encyclopedia sources behave like prerequisites in German business answers.
Which Source Types Shape German B2B AI Answers?
A review of how owned pages, directories, trade listings, databases, media mentions, and uncited text shape German B2B answers.
Which page formats get quoted in German answers?
A field note on the page formats that give AI engines clearer evidence in German informational business queries.
When English Profiles Override German Business Pages
A close look at how English trade profiles and translated descriptions can reshape AI answers about German companies.