digital marketing development

 IDF (Inverse Document Frequency) – is a term used to help determine the position of a term in a vector space model. IDF = log ( total documents in database / documents containing the term ) Image Map – Placing separate hyperlinks on different areas of the same image. Clicking on different parts of the image will take the user to different web pages. Not very search engine friendly. Inbound Links – See Backlinks. Index – Collection of data used as bank to search through to find a match to a user fed query. The larger search engines have billions of documents in their catalogs. When search engines search they search via reverse indexes by words and return results based on matching relevancy vectors. Stemming and semantic analysis allow search engines to return near matches. Index may also refer to the root of a folder on a web server. Indexing – After a search engine has crawled the web, it ranks the URLs found using various criteria (see algorithm) and places them in the database, ...