These rules are put in place to ensure that the standards that are in the law are adequately met, that that can be certified and signed off on by the chief executive officer, and that the steps to put in place those safety requirements are taken seriously.

WHITEHOUSE: Press Briefing

While a keyword job search for "certified public accountant" might turn up ads seeking a small-business chief financial officer who is also a CPA, semantic-search software would intuit that the user is looking for accounting jobs and list only those openings.

WSJ: Seeking Software Fix for Job-Search Game