Pattern recognition systems are trained from labeled "training" data.
The 1972 US Open was a tennis tournament that took place on the outdoor grass courts at the Forest Hills , Queens in New York City , USA .. tennis. tennis. US Open. US Open ( tennis ). The tournament ran from 28 August until 10 September .. It was the 92nd staging of the US Open , and the fourth Grand Slam tennis event of 1972 .. Grand Slam. Grand Slam ( tennis ). tennis. tennis. US Open. US Open ( tennis )