Accession Number : ADA470413


Title :   A Prototype System that Learns by Reading Simplified Texts


Corporate Author : NORTHWESTERN UNIV EVANSTON IL DEPT OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE


Personal Author(s) : Forbus, Kenneth D ; Riesbeck, Christopher ; Birnhaum, Lawrence ; Livingston, Kevin ; Sharma, Abhishek ; Ureel, Leo


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a470413.pdf


Report Date : Jan 2007


Pagination or Media Count : 7


Abstract : Systems that could learn by reading would radically change the economics of building large knowledge bases. This paper describes Learning Reader, a prototype system that extends its knowledge base by reading. Learning Reader consists of three components. The Reader, which converts text into formally represented cases, uses a Direct Memory Access Parser operating over a large knowledge base, derived from ResearchCyc. The Q/A system, which provides a means of quizzing the system on what it has learned, uses focused sets of axioms automatically extracted from the knowledge base for tractability. The Ruminator, which attempts to improve the system's understanding of what it has read by off-line processing, generates questions for itself by several means, including analogies with prior material and automatically constructed generalizations from examples in the KB and its prior reading. We discuss the architecture of the system, how each component works, and some experimental results.


Descriptors :   *READING MACHINES , KNOWLEDGE BASED SYSTEMS , TEXTBOOKS , LEARNING


Subject Categories : Psychology
      Computer Hardware


Distribution Statement : APPROVED FOR PUBLIC RELEASE