Term Vocabulary and Postings Lists Document Delineation Parsing a document What format is it in? pdf/word/ excel/html? What language is it in? What character set is in use? Each of these is a classification problem which we will study later in the course But these tasks are often done heuristicallyTerm Vocabulary and Postings Lists 5 Parsing a document ▪ What format is it in? ▪ pdf/word/excel/html? ▪ What language is it in? ▪ What character set is in use? Each of these is a classification problem, which we will study later in the course. But these tasks are often done heuristically … Document Delineation