And we always get many more false positives than true ones".
However, the new approach was less specific in many cases, detecting more false positives.
But it also has more false positives — spots that turn pale but are not malignant.
M.R.I. exams can also find tumors that mammograms miss, but they produce even more false positives.
Magnetic resonance imaging tests are more reliable but produce more false positives, which can lead to unnecessary biopsies and worry.
Individual marketers also get more false positives when they send badly aimed pitches, leading recipients to tag their messages as spam.
But it also delivered more false positives: of those who had no evidence of cancer or advanced precancer when they received a colonoscopy,13% tested positive using Cologuard.
Experts say that it will probably produce more false positives -- flagging children who are not actually autistic -- but that they prefer to err on the side of caution.
Here, you might sacrifice some of the accuracy or see more false positives.
When this information is inaccurate, the trained model is suboptimal and produces more false positives.
As a result, it tends to reduce false negatives but introduce more false positives.
