Google Books Ngram Viewer

Graph these comma-separated phrases:
case-insensitive
between and from the corpus with smoothing of .  
Search in Google Books:

1800 - 1979 1980 - 1990 1991 - 1992 1993 - 2003 2004 - 2008 artificial intelligence English
1800 - 1960 1961 - 1981 1982 - 1985 1986 - 2001 2002 - 2008 model building English
1800 - 1987 1988 - 2003 2004 - 2005 2006 2007 - 2008 machine learning English

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