Latent Semantic Indexing - LSI Timeline

LSI Timeline

Mid-1960s – Factor analysis technique first described and tested (H. Borko and M. Bernick)

1988 – Seminal paper on LSI technique published (Deerwester et al.)

1989 – Original patent granted (Deerwester et al.)

1992 – First use of LSI to assign articles to reviewers (Dumais and Nielsen)

1994 – Patent granted for the cross-lingual application of LSI (Landauer et al.)

1995 – First use of LSI for grading essays (Foltz, et al., Landauer et al.)

1999 – First implementation of LSI technology for intelligence community for analyzing unstructured text (SAIC).

2002 – LSI-based product offering to intelligence-based government agencies (SAIC)

2005 – First vertical-specific application – publishing – EDB (EBSCO, Content Analyst Company)