1. A method utilizing a computer system including a computer processor, the method for reviewing a collection of documents in electronic form stored in one or more memories wherein the computer system is configured to communicate with the one or more memories to identify relevant documents from the collection of documents, the method comprising the steps of: receiving a plurality of query terms in a relevant language string first defined and indicated by a reviewer, via an interface controller of the computer system; automatically creating a Boolean query by the system and without user interaction, based on the plurality of query terms in the relevant language string, by applying criteria to refine the relevant language string; running a search of the collection of documents in the one or more memories, the search being based on the plurality of query terms of the relevant language string first defined and indicated by the reviewer, the computer processor using the Boolean query to isolate substantially all documents from the collection of documents stored in memory that are relevant to the Boolean query and to return the substantially all documents in a subset of responsive documents from the collection of documents stored in the memory; establishing a threshold probability of relevancy for a particular reviewing operation in relation to the collection of documents; determining a corresponding probability of relevancy for each document in the subset of responsive documents; removing from the subset of responsive documents, documents that do not reach a threshold probability of relevancy established for the particular reviewing operation; randomly selecting a predetermined number of documents from a remaining subset of the collection of documents not in the subset of responsive documents, wherein if the randomly selected documents includes one or more additional relevant documents, the query terms are expanded and the search is re-run with the expanded query terms; and determining whether the randomly selected documents include additional relevant documents by further refining the Boolean query; and comparing a ratio of the additional relevant documents and the randomly selected documents to a predetermined acceptance level, to determine whether to apply a refined set of query terms.