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Think Tanks and Corporate Money |
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Looking at the financial situation of think tanks, different funding patterns can be found. While financial contributions from foundations play an important role especially for conservative think tanks, also contributions from governments are made to certain institutions. Yet one of the most important funding sources are corporate donors and individual contributors. Although the extent to which - in most cases conservative - think tanks rely on corporate funding varies, from the US$ 158 million spent by the top 20 conservative think tanks, more than half of it was contributed by corporations or businessmen.
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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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