Augmented grammar : If a Grammer G having start symbol S then augmented grammar is the new grammar G’ in which S’ is a new start symbol such that S’ -> .S LR(0) Item : An LR (0) item is a production G with dot at some position on the right side of the production. LR(0) items is useful to indicate that how much of the input has been scanned up to a given point in the process of parsing. In the LR (0), we place the reduce node in the entire row. LR(1) Item : An LR(1) item of a CFG G is a string of the form A ? [a • ß,a], where A ? aß is a production in G, and a is a terminal of G or the special symbol e.
