Are search results sorted by relevancy based on keyword usage, geospatial references, or both? If both, how is each category weighted?
Results are sorted by relevance, which combines several factors, the most important ones being (a) the system’s confidence in a particular result (b) the textual emphasis (e.g. boldface, being close to the top of the document) of the string (c) keyword relevance (classic TF-IDF). The exact combination weights are proprietary.