pathological


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pathological

(less commonly), pathologic
1. of or relating to pathology
2. relating to, involving, or caused by disease
3. Informal compulsively motivated
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

pathological

(1)
[scientific computation] Used of a data set that is grossly atypical of normal expected input, especially one that exposes a weakness or bug in whatever algorithm one is using. An algorithm that can be broken by pathological inputs may still be useful if such inputs are very unlikely to occur in practice.

pathological

(2)
When used of test input, implies that it was purposefully engineered as a worst case. The implication in both senses is that the data is spectacularly ill-conditioned or that someone had to explicitly set out to break the algorithm in order to come up with such a crazy example.

pathological

(3)
Also said of an unlikely collection of circumstances. "If the network is down and comes up halfway through the execution of that command by root, the system may just crash." "Yes, but that's a pathological case." Often used to dismiss the case from discussion, with the implication that the consequences are acceptable, since they will happen so infrequently (if at all) that it doesn't seem worth going to the extra trouble to handle that case (see sense 1).
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)
References in periodicals archive ?
Pathological microscopes are used to identify or discern the presence of chronic or infectious diseases in the body by pathologists.
The inclusion criteria were (i) age at renal biopsy >18 years, (ii) clear pathological results of renal biopsy, and (iii) type 2 DM.
It should be made mandatory for all pathological laboratories throughout the country to assign a customer-number to everyone going for medical-tests there.
Some studies suggest that prophylactically removing an impacted 3rd molar will reduce the chances of any pathological changes taking place around the impacted tooth 6 , while others studies favour conservative approach and suggest to wait for the pathologies to take place and then remove the tooth accordingly.7
Unless you're Henry the eighth one girl should be enough." And she continued to rant about him being a "cheating pathological liar" on herFacebook, telling concerned friends that she 'knew how to pick them'.
(6) In a recently published study, Celis et al could not find a correlation between clinical and pathological diagnosis.
In contrast, the symptoms of pathological anxiety are provoked by normal developmental experiences like going to bed or ordering food in a restaurant.
She said the council had been registered with Australia and organisations based in Asia Pacific countries which was the best opportunity to achieve better progress in the area of pathological work.
However, given some relatively recent developments in behavioural genetics, it is particularly difficult to establish the extent to what gene expression is in fact the cause, or the effect of pathological behaviour (see Gottlieb, 2007).
CK18, MMP-9, and TIMP1 levels were positively correlated with pathological N and the stage (P < 0.05) (Tables 2 and 3).
Objective: To explore the correlation of dual-source computed tomography (DSCT)/dual-energy imaging with pathological grading of lung adenocarcinoma.
Group A - patients with reactive trace and group B - patients with abnormal trace, including suspicious or pathological trace.

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