As a result, queries by agents of both American and foreign border crossers increased.
Another highly ranked search service is AskJeeves, which prods people to narrow their queries by picking from a list of questions and answers written by the company's employees.
It found that there had been no willful violations of the rules, and that fewer than 1 percent of queries by analysts involved errors.
Still in its infancy, the new search engine serves up answers to queries by tapping into people's social networks and those of their mates.
In the aftermath of the attacks, the children of Muslim immigrants became the first line of defense against a stream of queries by non-Muslims.
This works much as Google uses the billions of search queries by users and tracks their responses to refine its search engine.
The search tool, in its first iteration, answers queries by mining some of the data at the company's disposal, including photos, interests and likes.
Google engineers found that certain queries by users led to error messages or website disconnection.
When pushed for details, he brushed off queries by labeling his methods "proprietary".
We denote the number of recommended queries by card(R), the number of recommended significant queries by card(Rs) and the number of total significant recommended queries by card(RsT).
