The phrase "a lack of classification" is correct and usable in written English.
It can be used when discussing the absence or deficiency of a system to categorize or organize items, concepts, or data.
Example: "The study revealed a lack of classification in the existing data, making it difficult to draw meaningful conclusions."
Alternatives: "an absence of categorization" or "a deficiency in classification".
The automatically adapted classification routine delivers good results on this data set but the man/machine interface might show a lack of classification accuracy (robustness) at following sessions and at activities of daily living.
A lack of classification of all sequences to the genera level using pyrosequencing may also contribute to some of the observed differences in total detected bacteria between pyrosequencing and FISH.
In particular, there is no regulation on the first contact of health system through primary health service institutions, and there is a lack of classification of patients regarding the different levels of health service institutions.
Erythema multiforme (EM) continues to be an underestimated disease with a lack of strict classification and diagnostic criteria.
Although the pauses in each type of speech were characterized in numerous analyses (e.g., [33 35]), there has been a lack of automatic classification of speech type based on silent pause-related cues only.
AF is a heterogeneous condition likely to represent a number of underlying pathologies and a lack of aetiological classification may have hindered the quest for improved diagnostic markers.
There is a lack of health state classification instruments that consider children's developmental stages, and there is a need to understand the role of proxies in assessing and valuing children's health [ 46].
In the scientific literature, there is a lack of variable selection and classification methods considering replicated data.
The proposed approach is evaluated in a four distinct domains where a lack of semantic information makes classification of sentences rather difficult.
There is a lack of information on the classification of root distribution patterns for many peanut genotypes and the relationship between rooting traits and yield under mid-season drought, which could be useful for breeding for drought tolerance.
There has been a lack of consensus regarding the classification of PP.
