12. A non-transitory computer-readable storage medium comprising a plurality of computer-readable instructions tangibly embodied on the computer-readable storage medium, which, when executed by a data processor, provide for analyzing symbols in a computer system, the plurality of instructions comprising: instructions that cause the data processor to to receive a message including symbols; instructions that cause the data processor to perform a lexical analysis of the message, the lexical analysis generating a sequence of tokens based on the symbols included in the message, wherein a token in the sequence of tokens corresponds to a category of symbols, and wherein the category of symbols corresponds to a plurality of symbols having different values; instructions that cause the data processor to determine a message digest for the sequence of tokens, wherein the message digest is updated as each token in the sequence of tokens is identified during the lexical analysis; instructions that cause the data processor to assign the message to a cluster group based on the message digest.
12. A non-transitory computer-readable storage medium comprising a plurality of computer-readable instructions tangibly embodied on the computer-readable storage medium, which, when executed by a data processor, provide for analyzing symbols in a computer system, the plurality of instructions comprising: instructions that cause the data processor to to receive a message including symbols; instructions that cause the data processor to perform a lexical analysis of the message, the lexical analysis generating a sequence of tokens based on the symbols included in the message, wherein a token in the sequence of tokens corresponds to a category of symbols, and wherein the category of symbols corresponds to a plurality of symbols having different values; instructions that cause the data processor to determine a message digest for the sequence of tokens, wherein the message digest is updated as each token in the sequence of tokens is identified during the lexical analysis; instructions that cause the data processor to assign the message to a cluster group based on the message digest. 13. The non-transitory computer-readable storage medium of claim 12 , the instructions further comprising: instructions that cause the data processor to determine that the message digest is associated with a cluster identifier; instructions that cause the data processor to assign the message to the cluster group based on the associated cluster identifier; and instructions that cause the data processor to determine not to fully parse the message.