The Mechanisation of Thought Processes symposium was held at the National Physical Laboratory in Teddington, England, on 24–27 November 1958. Sometimes called "the British Dartmouth", it brought together a wide cross-section of the world's pioneers of artificial intelligence and machine intelligence and produced a two-volume HM Stationery Office proceedings (1959) that contains several foundational papers of the field.
Context
The NPL had a deep history with computation, Alan Turing's ACE design had been done there a decade earlier, and by the mid-1950s the laboratory was a natural British centre for early AI. The 1956 Dartmouth workshop had taken place two years earlier in the United States; the NPL symposium consolidated the cross-Atlantic AI community in the late 1950s and was deliberately international. American, British, Israeli, and continental European participants attended.
Notable papers
The proceedings include several papers that are now landmarks:
- Oliver Selfridge, "Pandemonium: a paradigm for learning". Selfridge's Pandemonium model proposed pattern recognition as a hierarchy of "demons", feature detectors that "shout" with intensity proportional to how well their feature matches the input, with higher-level demons combining the shouts of lower ones. It is the most explicit early statement of distributed pattern recognition and an ancestor of modern hierarchical feature learning in convolutional networks.
- John McCarthy, "Programs with Common Sense". McCarthy introduced the Advice Taker thought experiment: a system that could be told facts and rules in declarative form and would reason about them logically. The paper became the foundational document of declarative, knowledge-based AI and shaped logic programming, expert systems, and the entire knowledge-representation tradition.
- Marvin Minsky, "Some methods of heuristic programming and artificial intelligence". Minsky surveyed heuristic-driven theorem-proving and search, prefiguring the later "heuristic search" school.
- Contributions from Yehoshua Bar-Hillel (machine translation, including his later-famous critique of fully-automatic high-quality translation), Warren McCulloch (on neural mechanisms), Donald MacKay, Albert Uttley, and Gordon Pask (on self-organising systems).
Legacy
Because Selfridge's Pandemonium paper, McCarthy's Programs with Common Sense, and Minsky's heuristic-programming survey all appear together in the proceedings, the NPL volume is one of the most concentrated single sources of foundational AI ideas. The two volumes (the second a companion of discussions) are now collector's items but have been digitised in part. The symposium also marks an important moment in British AI, Britain was, in 1958, very much a co-equal partner in the field, before the Lighthill Report (1973) and the consequent funding collapse hollowed out much of the British AI research base for over a decade.
Related terms: Dartmouth Workshop, john-mccarthy, Lighthill Report
Discussed in:
- Chapter 2: Linear Algebra, Early AI Conferences