Round 1: Tossup 17

This process cannot decrease the code rate below the Shannon entropy according to the source coding theorem. Abraham Lempel and Jacob Ziv developed this process’s LZ77 algorithm, which is combined with Huffman coding in an algorithm nicknamed DEFLATE. Some algorithms (-5[1])for this process allow for perfect reconstruction (15[1])by removing redundancies without removing (*) information. Unlike PNG files, JPEG (10[1])files (10[2])use a “lossy” form (10[2])of this (10[2])process that creates (10[1])rectangular artifacts. Folders subjected to this process become ZIP files. (10[1])For 10 points, (10[1])name this process that reduces a data file’s size. ■END■ (10[2])

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