The phrase "a two stage model" is correct and usable in written English.
It can be used when describing a model or framework that consists of two distinct stages or phases.
Example: "The research utilized a two stage model to analyze the data, first focusing on qualitative insights and then on quantitative metrics."
Alternatives: "a dual phase model" or "a bifurcated model".
The test rig studied in this paper is called Low Emission Stirred Swirl (LESS) combustor, which is a two stage model combustor, fueled with liquid RP-3 kerosene and designed by Beijing University of Aeronautics and Astronautics (BUAA).
LST-GAM can be considered as a two stage model.
The objective of this paper was to develop a two stage model for moisture-induced deformations in expansive soils.
The differences in outcome in these two experiments (and many others) suggest a two stage model of processing of lightness and depth information (Figure 11; See also [43]).
It is possible to obtain the instrumental variable estimator through the two stage least square (2SLS) method, which is just a two stage model that first deals with accurately capturing the component of the peer variable we want (stage 1) and putting that cleaned-up indicator of the peer variable into the drug usage regression (stage 2).
A two stage model of peer education was applied in Teeth Tales.
Because AUC >180 was used, this resulted in a zero inflated distribution; thus, a two-stage model was used.
The taxi movement problem is formulated into a two-stage model that consists of two sub-models, namely the first and second stage sub-models.
Meeks and Elhai [1] proposed a two-stage model of pattern formation in which four contiguous (synchronous) cells at similar favorable stages in their cell cycles start to differentiate after nitrogen step-down and then undergo competitive resolution to select a single heterocyst.
We quantitatively trace the fate of gene triples originating in the hexaploidy across seven core eudicot flowering plants, and fit this to a two-stage model, pre- and post-radiation.
Compton was one of a handful of scientists and philosophers to propose a two-stage model of free will.
