Digital Lempel Ziv 1(DLZ1) A {Lempel-Ziv compression} {algorithm} which maps variable length input strings to variable length output symbols. During compression, the algorithm builds a dictionary of strings which is accessed by means of a {hash table}. Compression occurs when input data matches a string in the table and is replaced with the output symbol. DLZ1 is used on {Digital Linear Tape}. (1997-04-05)