4. A method according to claim 2 , wherein an identifier is selected from the group of one or more candidate identifiers, or a revised group of candidate identifiers selected from the said group of one or more candidate identifiers, using a predetermined algorithm or heuristic.
4. A method according to claim 2 , wherein an identifier is selected from the group of one or more candidate identifiers, or a revised group of candidate identifiers selected from the said group of one or more candidate identifiers, using a predetermined algorithm or heuristic. 5. A method according to claim 4 , wherein the identifier is selected from the group of one or more candidate identifiers on the basis of data which is known to be correlated to the likelihood that the identifier is the correct identifier of a protein mention.