(2nd-March-2020)
An intelligent tutoring system is a computer system that tutors students in some domain of study.
For example, in a tutoring system to teach elementary physics, such as mechanics, the system may present the theory and worked-out examples. The system can ask the student questions and it must be able to understand the student's answers, as well as determine the student's knowledge based on what answers were given. This should then affect what is presented and what other questions are asked of the student. The student can ask questions of the system, and so the system should be able to solve problems in the physics domain.
A Trading Agent
A trading agent is like a robot, but instead of interacting with a physical environment, it interacts with an information environment. Its task is to procure goods and services for a user. It must be able to be told the needs of a user, and it must interact with sellers (e.g., on the Web). The simplest trading agent involves proxy bidding for a user on an auction site, where the system will keep bidding until the user's price limit is reached. A more complicated trading agent will buy multiple complementary items, like booking a flight, a hotel, and a rental car that fit together, in addition to trading off competing preferences. Another example of a trading agent is one that monitors how much food and groceries are in a household, monitors the prices, and orders goods before they are needed, keeping costs to a minimum.
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