Andrey Petrovich Yershov (Андре́й Петро́вич Ершо́в; 19 April 1931, Moscow – 8 December 1988, Moscow) was a Soviet computer scientist, notable as a pioneer in systems programming and programming language research.
Donald Knuth considers him to have independently co-discovered the idea of hashing with linear probing. He also created one of the first algorithms for compiling arithmetic expressions.
He was responsible for the languages ALPHA and Rapira, the first Soviet time-sharing system AIST-0, electronic publishing system RUBIN, and a multiprocessing workstation MRAMOR. He also was the initiator of developing the Computer Bank of the Russian Language (Машинный Фонд Русского Языка), the Soviet project for creating a large representative Russian corpus, a project in the 1980s comparable to the Bank of English and British National Corpus. The Russian National Corpus created by the Russian Academy of Sciences in the 2000s is a successo