They suspect but cannot prove that the traces of poison found in some samples were false positives caused by laboratory contamination.
This is to eliminate the majority of false positives caused by substorms and similar rapid signals.
Therefore, false positives caused by noise-based exceedance of in (2) or slight lighting changes are obtained.
We used the Holm-Bonferroni method [8] to reduce false positives caused by the multiple comparisons problem.
The patent specifically details automatic detection of when it's on a person's wrist, and when a person starts to run, making it less susceptible to false positives caused by arm motion.
Second, three motion-sensitive postprocessing methods were applied successively to examine the temporal and spatial characteristics of responses and identify and remove false positives caused by motion artifacts.
Despite this fast adaptation to uncovered background areas, for a few frames false positives caused by uncovered background regions might be contained in the masks.
The double threshold approach takes a snapshot in time of the current CPU utilisation and thus can suffer from false positives caused by workload utilisation peaks and troughs.
Unaltered forest change outputs may include unwanted artifacts (false positives) caused by the influence of clouds, unmasked cloud edges, cloud shadows, topography, and water boundaries.
To rule out false positives caused by other compounds, the team also tested for common pollutants including hydrocarbons, ozone, and nitric oxide.
