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Disney |
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Founded in 1929 Disney primarily engages in child and adult entertainment. Starting with the production of animated motion-picture cartoons in the late 1940s Disney began to make also nature documentaries and live-action motion pictures, as well as short cartoons and live-action programs for television. In 1955 the company opened Disneyland, which was their first amusement park. Further openings of amusement parks in the U.S. and Europe followed. In 1996 Disney acquired Capital Cities/ABC Inc., which owned the ABC television network.
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Expert system
Expert systems are advanced computer programs that mimic the knowledge and reasoning capabilities of an expert in a particular discipline. Their creators strive to clone the expertise of one or several human specialists to develop a tool that can be used by the layman to solve difficult or ambiguous problems. Expert systems differ from conventional computer programs as they combine facts with rules that state relations between the facts to achieve a crude form of reasoning analogous to  artificial intelligence. The three main elements of expert systems are: (1) an interface which allows interaction between the system and the user, (2) a database (also called the knowledge base) which consists of axioms and rules, and (3) the inference engine, a computer program that executes the inference-making process. The disadvantage of rule-based expert systems is that they cannot handle unanticipated events, as every condition that may be encountered must be described by a rule. They also remain limited to narrow problem domains such as troubleshooting malfunctioning equipment or medical image interpretation, but still have the advantage of being much lower in costs compared with paying an expert or a team of specialists.
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