The phrase "additional descriptor" is correct and usable in written English.
You can use it when referring to an extra piece of information that provides more detail or context about something.
Example: "In the report, we included an additional descriptor to clarify the data presented in the charts."
Alternatives: "extra label" or "supplementary description".
The additional descriptor is the area (in pixels) of the largest subgroup in the image after thresholding.
An improved CoMFA model (r2cv=0.536, r2conv=0.968, SEE=0.222, r2pred=0.6564) was obtained by taking into account the CMR as additional descriptor.
This prediction is appended to the features matrix and serves as additional descriptor for training the next model, on the second label.
The CoMFA models generated using steric and electrostatic fields for tPA, fXa, thrombin, plasmin, and trypsin inhibition exhibited better statistical significance than the CoMFA models generated using ClogP as an additional descriptor.
When the model was developed, we also used logD as additional descriptor, calculating the partition coefficient in a series of acidic and basic pH, but the results were no better.
The ORR turnover frequency of such moieties is however known to depend on chemical and electronic properties of the carbon matrix, which will require additional descriptor(s) than the site density in order to precisely interpret the ORR activity of such materials.
Five additional descriptors were required.
Besides conventional steric and electrostatic fields, seven additional descriptors were incorporated to the CoMFA models.
The descriptors and fingerprints are calculated using the Chemistry Development Kit [33] with additional descriptors and fingerprints.
Subsequently, the modeler may want to modify M3 by adding additional descriptors.
In the right part (FS7), the chemical representation is further optimized by additional descriptors.
