In 2023, DeepMind researchers showed that Chinchilla LLMs performing an “arithmetic” technique can surprisingly outperform standard algorithms for this task. Most modern algorithms for this (-5[1])task use discrete cosine (15[1])transforms then impose a cutoff (15[1])frequency. One iteratively finds the longest string in a table that is the prefix of an unscanned input in the (*) Lempel-Ziv algorithm for this (10[1])task. Shannon entropy provides a theoretical limit on this task according to (10[1])Shannon’s source (-5[1])coding theorem. A binary tree based on relative symbol (10[1])frequency is used to construct (10[1])a Huffman code for this (10[1])task. The conversion of images to JPEGs exemplifies the lossy form of, for 10 points, (10[1])what task in computer (10[1])science (10[1])which reduces the size of a data file? (10[2])■END■