" The bolt catcher is not as robust " as it should be , said retired Navy Admiral Harold W. Gehman Jr . , the board chairman .
" The bolt catcher is not as robust as it is supposed to be , " the board 's chairman , retired Adm. Hal Gehman , said .
-categories are subjects, topics or concepts -goal: find associated category for document -supervised training builds model relating input term frequencies to class (decision tree, neural net)