The engine then returns the results in descending order by the score. In other words, the most relevant result appears at the top.

tf = term frequency in document = measure of how often a term appears in the document
idf = inverse document frequency = measure of how often the term appears across the index
coord = number of terms in the query that were found in the document
lengthNorm = measure of the importance of a term according to the total number of terms in the field
queryNorm = normalization factor so that queries can be compared
boost (index) = boost of the field at index-time
boost (query) = boost of the field at query-time
If you would like to know more, go to: http://www.lucenetutorial.com/advanced-topics/scoring.html


Major Search Engine Overhaul Coming Soon The engine then returns the results in descending order by the score. In other words, the most relevant result appears at the top. tf = term frequency in document = measure of how often a term appears in the document idf = inverse document frequency = measure of how often the term appears across the index coord = number of terms in the query that were found in the document lengthNorm = measure of the importance of a term according to the total number of terms in the field queryNorm = normalization factor so that queries can be compared boost (index) = boost of the field at index-time boost (query) = boost of the field at query-time If you would like to know more, go to: http://www.lucenetutorial.com/advanced-topics/scoring.html
Customer Update - November 2010 Customer Update