Probabilistic retrieval model: (a) Given a query as shown in the table, if we have the following document-term matrix and the associated relevance information for a probabilistic retrieval model. An entry ' 1 ' indicates that the term occurs in a document, and ' 0 ' means it does not: R or NR indicate the relevance of the document with respect to queries in the training data Assume the information retrieval system received two new documents and their vectors according to T1 through T6 are as follows: doc11doc12=(0,1,1,0,0,1)=(1,0,1,1,0,1) Compute their retrieval status values (RSV) to find which one should be ranked higher (note: please smooth the counting by adding 0.5 as shown in the following table)