Product Description: FOR USE IN SCHOOLS AND LIBRARIES ONLY. When his evil-genius best friend, Casper, plots to take over the world, everyday kid Lenny becomes humanity's defender as the only person capable of seeing through Casper's handlebar-mustache disguise.

Product Description: Dwight is a little eccentric and that drives Tommy, who sits next to him at lunch, nuts. Dwight is fantastic at origami, though, and he has created the most amazing Yoda that he wears on his finger. It appears that this creation can tell the future! Tommy wants to know why this Yoda is so smart...read more

Product Description: FOR USE IN SCHOOLS AND LIBRARIES ONLY. Sixth-grader Tommy and his friends describe their interactions with a paper finger puppet of Yoda, worn by their weird classmate Dwight, as they try to figure out whether or not the puppet can really predict the future.

Product Description: One year after Dwight created Yoda Origami, he gets suspended and possibly expelled from school. That means Darth Paper, the evil origami figure created by Harvey, Dwight's archenemy, will take Yoda's place. Dwight's classmates band together to try and get their friend (and Yoda) back in school where he belongs...read more

Product Description: FOR USE IN SCHOOLS AND LIBRARIES ONLY. Harvey, upset when his Darth Paper finger puppet brings humiliation, gets Dwight suspended, but Origami Yoda asks Tommy and Kellan, now in seventh grade, to make a new casefile to persuade the School Board to reinstate Dwight.

As research on expert systems has moved well into its second decade, it has become popular to cite the limitations of the phenomenologic or associational approach to knowledge representation that was typical of first generation systems. For example, the Internist-1 knowledge base represents explicitly over 600 diseases, encoding associated disease manifestations (signs, symptoms, physical findings, and lab abnormalities) but failing to deal with the reasons that those findings may be present in the disease [Miller, R. A. 82]. In recent years Pople has sought to add detailed causal models to the knowledge base in a revised version of the program known as CADUCEUS [Pople 82]. Similarly, a typical production rule in the MYCIN system states inferences that may be drawn when specific conditions are found to be true [Buchanan 84], but the underlying explanations for such relationships are not encoded. Clancey has argued that MYCIN needs such "supporting knowledge" represented, especially if its knowledge base is to be used for teaching purposes [Clancey 83]. By the late 1970s, artificial intelligence researchers were beginning to experiment with reasoning systems that used detailed mechanistic or causal niodels of the object being analyzed. Among the best early examples were a program to teach students how to analyze electronic circuits [Brown 82] and a system for diagnosing problems with mechanical devices [Rieger 76].

Product Description: Acclaimed, New York Times bestselling author Tom Angleberger delivers a captivating retelling of Star Wars: Return of the Jedi like you've never experienced before, infusing the iconic, classic tale of good versus evil with a unique perspective and narrative style that will speak directly to today's young readers while enhancing the Star Wars experience for core fans of the saga...read more