The LZ Compression technique implicitly works out its own probabilities for a given document. Professor Brailsford explains. Main LZ compression film: • Elegant Compression in Text (The LZ 77 Met... / computerphile / computer_phile This video was filmed and edited by Sean Riley. Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: http://bit.ly/bradychannels