ELIZA-A Computer Program For the Study ofNatural Language Communication Between Man And Machine ELIZA is a program operating within the MAC time-sharing system at MIT which makes certain kinds of natural language conversation between man and computer possible. Input sentences are analyzed on the basis of decomposition rules which are triggered by key words appearing in the input text. Responses are generated by reassembly rules associated with selected decomposition rules. the fundamental technical problems with which ELIZA is concerned are: (1)the identification of key words, (2) the discovery of minimal context, (3) the choice of appropriate transformations, (4) generation of responses in the absence of key words, and (5) the provision of an editing capability for ELIZA "scripts". A discussion of some psychological issues relevant to the ELIZA approach as well as of future developments concludes the paper. CACM January, 1966 Weizenbaum, J. CA660108 JB March 3, 1978 4:00 PM 1024 4 1487 1051 4 1487 1098 4 1487 1214 4 1487 1380 4 1487 1388 4 1487 1393 4 1487 1485 4 1487 1487 4 1487 1549 4 1487 1570 4 1487 1878 4 1487 1946 4 1487 1957 4 1487 2168 4 1487 2723 4 1487 2857 4 1487 3112 4 1487 1400 5 1487 1487 5 1487 1487 5 1487 1487 5 1487 1553 5 1487 1945 5 1487 2127 5 1487 2396 5 1487 2730 5 1487 731 5 1487 823 6 1487 914 6 1487 915 6 1487 917 6 1487 984 6 1487 989 6 1487 990 6 1487 1012 6 1487 1084 6 1487 1098 6 1487 1122 6 1487 1138 6 1487 1139 6 1487 1141 6 1487 1155 6 1487 1200 6 1487 1223 6 1487 1265 6 1487 1324 6 1487 1336 6 1487 1396 6 1487 1455 6 1487 1477 6 1487 1487 6 1487 1487 6 1487 1487 6 1487 1487 6 1487 1487 6 1487 1487 6 1487 1491 6 1487 1496 6 1487 1527 6 1487 1781 6 1487 1856 6 1487 1856 6 1487 2092 6 1487 2127 6 1487 483 6 1487 584 6 1487 669 6 1487 680 6 1487 763 6 1487