Solomonoff Begins Algorithmic Information Theory

In March and June, 1964 American mathematician and researcher in artificial intelligence Ray Solomonoff published "A Formal Theory of Inductive Inference, Part I" Information and Control, 7, No. 1, 1-22,  and  "A Formal Theory of Inductive Inference, Part II," Information and Control, 7, No. 2,  224-254. This two-art paper is considered the beginning of algorithmic information theory.

Solomonoff first described his results at a Conference at Caltech, 1960, and in a report of February, 1960: "A Preliminary Report on a General Theory of Inductive Inference."