During indexing, an inverted index is made with the term of the documents and the term frequency, document frequency etc. are stored. If I know correctly, the exact document length is not stored in the index to reduce the size. Instead, a normalized length is stored for each document. However, for most retrieval functions, document length is a necessary component and the normalized doc-length is used in those functions.
I want to ask how exactly the normalization process is performed. The question might have been answered already, but I was unable to find the proper response. Your help is much appreciated. Thanks.
