Pacific AI implements intelligent training and testing tools. Their latest
project is an online assessment testing tool that can be used for either
assessing a student's performance, or creating a self-study guide that is
driven by the student's responses to test questions. In either case, the
flow of the test is determined by student answers.
Pacific AI Provides Intelligent
with Delphi, Access and Amzi!
The user interface for the tests is implemented using Borland's Delphi.
Prolog is used for the scripting language which defines the test questions,
the intelligent flow of the test based on student answers, generating
assessment reports, and physically laying out the Delphi controls that
will be presented for any given question. Access is used for storing the
questions and printing tests.
The implementation of the scripting language for intelligent tests capitalizes
on Prolog's strengths for language parsing. The direct manipulation of
Delphi controls by Prolog relies on the ease with which Amzi! Prolog can
be extended to access anything callable from Delphi (or C/C++).
For example, Prolog code takes symbolic representations of equations
and presents them both textually formatted as they might appear in a text
book (fractions above and below, square root radicals fully drawn, exponents
raised, etc.) and graphically using Scigraph's Delphi graphing component.
In the first case, Prolog is an excellent tool for expressing the rules
for formatting an equation, which are translated directly into drawing
commands, and in the second, Prolog is excellent at converting a symbolic
representation of an equation into points for graphing which are passed
to the Scigraph component.
For self-study, the Prolog code can directly access Windows help files.
Based on student answers, the scripting language for the tests can direct
the student to help topics that explain the areas the student is having
See related article.
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