The phrase "a preliminary classification of" is correct and usable in written English.
It can be used when introducing an initial categorization or grouping of items, concepts, or data before a more detailed analysis or classification is conducted.
Example: "The study provides a preliminary classification of the various species found in the region, which will be refined in future research."
Alternatives: "an initial categorization of" or "a provisional classification of".
Based on the light curves and images of RHESSI flares, we tried to make a preliminary classification of solar flares.
This multiprobe design reduced the degree of probe degeneration, which otherwise decreases the sensitivity, and allowed a preliminary classification of the amplified sequence directly from the QPCR trace.
At the large scale, variation is low consistent with a preliminary classification of sites according to the putative levels of human activity.
This study uses an exploratory two-phase integrative qualitative and quantitative research design to identify a preliminary classification of ethical shopper types.
A preliminary classification of the product and service attributes that senior citizens value was made after 4 interviews.
Table 2 provides a preliminary classification of receptors identified with respect to the GRAFS classification system from a comparative perspective.
For example, a preliminary classification between two classes of duration less or more than 30 min can help to pick up between the MLR for short duration incidents and RVM for the others.
Both received a practice round prior to the recordings and had a maximum selection score of over 90% in a preliminary classification test.
Homogeneous subgroups consisting of either a high or a low proportion of patients were identified, corresponding to a preliminary classification.
A preliminary classification using three different categories purely based on the shape and appearance of the spectra was proposed.
Decision fusion is defined as the process of fusing information from individual data sources after each data source has undergone a preliminary classification [16].
