They sometimes catch legitimate messages — these are
called false positives.
Not exact matches
Still, the president cited his military record and
positive reviews from Obama and George W. Bush,
calling the accusations against him
false.
In actuality, if an SDR knows too much, they're actually likely to chase what I
call «
false positive» opportunities - they look really good in the beginning, but they quickly fall apart when things get serious.
For criminal investigators, if the database contains 10 close
calls that resemble the print from the crime scene, that's a significant complication, because by definition at least 9 of those 10 are
false positives.
The principal measure of efficacy is
called Area Under the Curve (AUC), a measure of how well biomarkers identify true cases of disease (sensitivity) while avoiding
false positives (specificity).
«By running a gel, we perturb the nanoswitches with an electric field to reduce
false positive results using a process
called «kinetic proofreading,»» Wong explains.
Many volunteers ended up with
false positives — they named frog species whose
calls weren't being played.
We do have an enriched population, but
calling de novos is very likely to yield some
false positives.
What I like about this study is that the authors looked at sequencing errors first, to precisely classify the sources of
false -
positives, and then built their variant -
calling algorithm around the results.
Next, the authors used a machine learning classifier trained on 592 true
positive and 1,630
false positive de novo
calls that had been validated experimentally.
A promising exoplanet candidate w... ▽ More As is the case for all techniques involved in the research for exoplanets, direct imaging has to take into account the probability of so -
called astrophysical
false positives, which are phenomena that mimic the signature of objects we are seeking.
One common cause of
false positives are so -
called «high - risk» lesions that appear suspicious on mammograms and have abnormal cells when tested by needle biopsy.
About 10 percent to 15 percent of people have so -
called «
false - negative» blood test results (negative blood test results but a
positive biopsy) even when they're eating a gluten - filled diet, according to Dr. Alessio Fasano, head of the Massachusetts General Hospital Center for Celiac Research.
The last problem with over testing is that it leads to what are
called «
false positives.»
Artist Daniel Govar (Eclipse, Azure,
False Positive) and former DC, Marvel and Comixology exec Ron Perazza have launched a new website
called Think Tank that will look at digital comics created for the online and tablet environments.
Think of this as a
false positive, if this is how they get you to
call them then that is a very deceptive method in my opinion.
This indicator has never failed before: it has
called every bull market's top, has predicted every recession in the last 67 years, and has never had a
false positive.
First, the test sometimes is wrong and your puppy is
positive, this is
called a
false negative, and happens 8 - 10 % of the time.
On occasion,
false positives can occur, particularly if other parasites (roundworms, etc.) are present or there is another nonpathogenic heartworm present
called dipetalonema reconditum.
I know that sounds bonkers crazy like a double negative... It's
called avoiding the
false positive of making an untrue claim, or avoidance of being the boy who
called wolf when there really wasn't one... which could harm scientists» reputations & science in general.
Instead, he fuels the game by making
calls for the public to buy their stocks, when he's fully capable of recognizing when they're «fomenting,» or drumming up interest in their stock by giving a
false impression of
positive activity.
found that there are carbon monoxide alarms available to buy online in the UK that are not compliant with the BS EN 50291 industry safety standard; further notes that such noncompliant alarms can fail to detect dangerous levels of carbon monoxide, leaving consumers with a
false sense of confidence and thus exposing consumers to the risk of carbon monoxide poisoning; notes that eBay, Amazon and Robert Dyas have all taken
positive steps to remove dangerous carbon monoxide alarms and detectors from their product lines; and
calls on the Government to ensure that all carbon monoxide alarms on the market in the UK are compliant with the BS EN 50291 standard.»
But the problem of
false positives from picking up unrelated information — what scientists
call «artifact» — is still a problem for consumer companies to solve, and the technology that she has seen so far is very rudimentary.
You then have to take a considered
call on whether it indeed is a PUP or
false positive, and decide if you would like to remove it or not.
Professors Caroline de Costa and Jan Dickinson wrote an editorial in the MJA
calling for the test to be more widely available Professor de Costa told the ABC that «one of problems with existing technology is that there are a certain number of
false positive results.»
Many of the scales demonstrated weak psychometrics in at least one of the following ways: (a) lack of psychometric data [i.e., reliability and / or validity; e.g., HFQ, MASC, PBS, Social Adjustment Scale - Self - Report (SAS - SR) and all perceived self - esteem and self - concept scales], (b) items that fall on more than one subscale (e.g., CBCL - 1991 version), (c) low alpha coefficients (e.g., below.60) for some subscales, which
calls into question the utility of using these subscales in research and clinical work (e.g., HFQ, MMPI - A, CBCL - 1991 version, BASC, PSPCSAYC), (d) high correlations between subscales (e.g., PANAS - C), (e) lack of clarity regarding clinically - relevant cut - off scores, yielding high
false positive and
false negative rates (e.g., CES - D, CDI) and an inability to distinguish between minor (i.e., subclinical) and major (i.e., clinical) «cases» of a disorder (e.g., depression; CDI, BDI), (f) lack of correspondence between items and DSM criteria (e.g., CBCL - 1991 version, CDI, BDI, CES - D, (g) a factor structure that lacks clarity across studies (e.g., PSPCSAYC, CASI; although the factor structure is often difficult to assess in studies of pediatric populations, given the small sample sizes), (h) low inter-rater reliability for interview and observational methods (e.g., CGAS), (i) low correlations between respondents such as child, parent, teacher [e.g., BASC, PSPCSAYC, CSI, FSSC - R, SCARED, Connors Ratings Scales - Revised (CRS - R)-RSB-, (j) the inclusion of somatic or physical symptom items on mental health subscales (e.g., CBCL), which is a problem when conducting studies of children with pediatric physical conditions because physical symptoms may be a feature of the condition rather than an indicator of a mental health problem, (k) high correlations with measures of social desirability, which is particularly problematic for the self - related rating scales and for child - report scales more generally, and (l) content validity problems (e.g., the RCMAS is a measure of anxiety, but contains items that tap mood, attention, peer interactions, and impulsivity).