About: http://webisa.webdatacommons.org/336578679

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	As such, each Web page is represented as a feature vector, whose element is a word with its weighting xi=<xi1, xi2 . . . xin> The weighting xij is calculated by length-normalized log(tf).idf, which has the form:
http://www.w3.org/ns/prov#wasQuotedFrom	google.com