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Jay Earley is an American computer scientist and psychologist. He invented the Earley parser in his early career in computer science.[1][2] Later he became a clinical psychologist specializing in group therapy and Internal Family Systems Therapy (IFS), including working with the inner critic. He has created the Pattern System, a personality system, and Self-Therapy Journey, a web application for psychological healing and behavior change.[citation needed]


  1. ^ Earley, Jay (1968). An Efficient Context-Free Parsing Algorithm (PDF). Carnegie-Mellon Dissertation.
  2. ^ Earley, Jay (1970), "An efficient context-free parsing algorithm", Communications of the ACM, 13 (2): 94–102, doi:10.1145/362007.362035