This paper gives an overall account of a prototype
<term>
natural language question answering system
</term>
, called
<term>
Chat-80
</term>
.
<term>
Chat-80
</term>
has been designed to be both efficient and easily adaptable to a variety of applications .
#14143This paper gives an overall account of a prototype natural language question answering system, called Chat-80. Chat-80 has been designed to be both efficient and easily adaptable to a variety of applications.
tool,12-4-J82-3002,ak
With the aid of a
<term>
logic-based grammar formalism
</term>
called
<term>
extraposition grammars
</term>
,
<term>
Chat-80
</term>
translates English questions into the
<term>
Prolog subset of logic
</term>
.
#14187With the aid of a logic-based grammar formalism called extraposition grammars, Chat-80 translates English questions into the Prolog subset of logic.
tech,1-3-J82-3002,ak
The
<term>
system
</term>
is implemented entirely in
<term>
Prolog
</term>
, a
<term>
programming language
</term>
based on
<term>
logic
</term>
.
#14161The system is implemented entirely in Prolog, a programming language based on logic.
other,13-3-J82-3002,ak
The
<term>
system
</term>
is implemented entirely in
<term>
Prolog
</term>
, a
<term>
programming language
</term>
based on
<term>
logic
</term>
.
#14173The system is implemented entirely in Prolog, a programming language based on logic .