other,24-5-C88-2162,ak From this , a <term> language learning model </term> was implemented in the program <term> RINA </term> , which enhances its own <term> lexical hierarchy </term> by processing examples in <term> context </term> .
model,14-7-C88-2162,ak First , how <term> linguistic concepts </term> are acquired from <term> training examples </term> and organized in a <term> hierarchy </term> ; this task was discussed in previous papers [ Zernik87 ] .
other,18-9-C88-2162,ak Thus , a program does not stall even in the presence of a lexical unknown , and a <term> hypothesis </term> can be produced for covering that <term> lexical gap </term> .
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