@inproceedings{429f3ae96f8a4137bb560679902c958d,
title = "Bi-directional search for bugs: A tool for accelerating knowledge acquisition for equation-based tutoring systems",
abstract = "Authoring the knowledge base for an intelligent tutoring system (ITS) is difficult and time consuming. In many ITS, the knowledge base is used for solving problems, so authoring it is an instance of the notoriously difficult knowledge acquisition problem of expert systems. General tools for knowledge acquisition have shown only limited success, which suggests developing tools that apply only to specific kinds of knowledge bases. Pyrenees is an ITS whose knowledge base is composed mostly of conditioned equations. We have developed several tools for authoring Pyrenees knowledge bases. This paper focuses on a novel and particularly powerful tool that uses bidirectional search to locate bugs in the knowledge base. In several evaluations, human authoring was significantly faster when the tool was available than when it was unavailable",
keywords = "Authoring tools, Automatic error detection on knowledge, Bi-directional search",
author = "Jung, {Sung Young} and Kurt Vanlehn",
year = "2008",
doi = "10.1007/978-3-540-69132-7_101",
language = "English (US)",
isbn = "3540691308",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer Verlag",
pages = "758--762",
booktitle = "Intelligent Tutoring Systems - 9th International Conference, ITS 2008, Proceedings",
note = "9th International Conference on Intelligent Tutoring Systems, ITS 2008 ; Conference date: 23-06-2008 Through 27-06-2008",
}