But the non-valid first-order sentences are not recursively enumerable, hence neither are the validities for the modal system MFC.
What was missing was a procedure to list out all the non-valid formulas, or equivalently to list out all satisfiable formulas.
We determined the non-valid data as follows: the missing for rice intake, miso soup intake, alcohol intake, ⩾5 items out of 33 food items; and/or extremely low or high total energy intakes (<800 kcal day−1 or >4000 kcal day−1).
Table 2 (see Additional file Table 2) lists the similarity search best matches for these sequences together with our conclusions regarding the justification for considering a previously non-valid named species as a new species or whether the non-valid name refers to just a synonym.
The version of ANT used by Callejas et al. [ 33, 34] is remarkable in two important aspects: 1) The presence/absence of the non-valid trials: in this version, orienting is measured using a non-predictive cue, with 50% valid vs. 50% invalid cues.
This is a serious potential issue with models that ignore violations of the independence assumption, as it could lead to the acceptance of non-valid models as true.
To avoid non-valid extrapolation, the validity domain of PTFs should be investigated.
These studies indicate important impairments related to snapping hip, but the case report by Spine [ 7] fails to prove an association between walking and external snapping hip because of its design and the use of non-valid outcome measures.
Otherwise, all the permutations represented by the resulting tree are non-valid, because conflicting restrictions cannot be fulfilled.
"Because you can never, on your own, think up all the non-sinister, perfectly valid explanations for that fact".
Indeed, the main limitation of this work concerns the lack of systematicity, which is explained, at least partly, by the non-existence of valid instruments and methodology to assess adverse events and also by the lack of previous reviews on this topic.
