[ 1 ] Wang L. Machine availability monitoring and machining process planning towards cloud manufacturing. CIRP J Manuf Sci Technol 2013;6(4):263–73. link1

[ 2 ] Negnevitsky M. Artificial intelligence: a guide to intelligent systems. 2nd ed. Harlow: Addison–Wesley; 2005. link1

[ 3 ] McCulloch WS, Pitts W. A logical calculus of the ideas immanent in nervous activity. Bull Math Biophys 1943;5(4):115–33. link1

[ 4 ] Turing AM. Computing machinery and intelligence. Mind 1950;LIX (236):433–60. link1

[ 5 ] Minsky ML. Theory of neural-analog reinforcement systems and its application to the brain model problem [dissertation]. Princeton: Princeton University; 1954. link1

[ 6 ] Brook R. The relationship between matter and life. Nature 2001;409:409–11. link1

[ 7 ] Newell A, Simon HA. GPS, a program that simulates human thought. In: Billing H, editor. Lernende automaten. München: R. Oldenbourg; 1961. p. 109–24. link1

[ 8 ] Zadeh LA. Fuzzy sets. Inf Control 1965;8(3):338–53. link1

[ 9 ] Buchanan B, Sutherland G, Feigenbaum EA. HEURISTIC DENDRAL: a program for generating explanatory hypotheses in organic chemistry. In: Meltzer B, Michie D, Swann M, editors. Machine intelligence 4. Edinburgh: Edinburgh University Press; 1969. p. 209–54. link1

[10] Bryson Jr AE, Ho YC. Applied optimal control: optimization, estimation, and control. Waltham: Blaisdell Publishing Company; 1969. link1

[11] Holland JH. Adaptation in natural and artificial systems: an introductory analysis with applications to biology, control, and artificial intelligence. Ann Arbor: University of Michigan Press; 1975. link1

[12] Shortliffe E, editor. Computer-based medical consultations: MYCIN. New York: Elsevier; 1976. link1

[13] Hopfield JJ. Neural networks and physical systems with emergent collective computational abilities. Proc Natl Acad Sci USA 1982;79(8):2554–8. link1

[14] Rumelhart DE, McClelland JL; PDP Research Group. Parallel distributed processing: explorations in the microstructures of cognition. Cambridge: MIT Press; 1986. link1

[15] Koza JR. Genetic programming: on the programming of the computers by means of natural selection. Cambridge: MIT Press; 1992. link1

[16] Deep Blue [Internet]. Armonk: IBM [cited 2019 Jan 7]. Available from: https:// www.ibm.com/ibm/history/ibm100/us/en/icons/deepblue/. link1

[17] AlphaGo Korea [Internet]. London: DeepMind Technologies Limited; c2019 [cited 2019 Jan 7]. Available from: https://deepmind.com/research/alphago/ alphago-korea/. link1

[18] Silver D, Schrittwieser J, Simonyan K, Antonoglou I, Huang A, Guez A, et al. Mastering the game of Go without human knowledge. Nature 2017;550 (7676):354–9. link1

[19] Liu H, Fang T, Zhou T, Wang L. Towards robust human–robot collaborative manufacturing: multimodal fusion. IEEE Access 2018;6:74762–71. link1

[20] Liu H, Wang L. Human motion prediction for human–robot collaboration. J Manuf Syst 2017;44(Pt 2):287–94. link1

[21] Wang P, Liu H, Wang L, Gao RX. Deep learning-based human motion recognition for predictive context-aware human–robot collaboration. CIRP Ann 2018;67(1):17–20. link1

[22] Mohammed A, Wang L. Brainwaves driven human–robot collaborative assembly. CIRP Ann 2018;67(1):13–6. link1