The phrase "a very complex model" is correct and usable in written English.
You can use it when describing a model that has many intricate parts or is difficult to understand.
Example: "The researchers developed a very complex model to simulate climate change effects over the next century."
Alternatives: "an extremely intricate model" or "a highly complicated model".
The long-term evolution of an ice sheet "is a very complex modeling problem.
AI engineers anticipating the need to trace the effect of specific data on a model may choose to build a series of simple models optimizing on single dimensions, instead of one monolithic and very complex model.
Although 250 repetitions are considered by the literature to be a sufficient number for very complex models, 50 52 it is possible that the number was inadequate to identify a clear pattern from the small sample.
These approaches involve a very complex error model from the true haplotype as a trichotomous variable into the continuous space of the expected number of haplotype copies.
This is a very complex error model, as it moves from the discrete space {0,1,2} to the continuous space [0,2] with the distribution of Hm* being three-modal at 0,1, and 2. This error measure can only be applied when using the expected number of haplotypes Hm* as explaining variables in the haplotype association analysis.
To explain this link, a very complex causation model can be presumed.
Despite its very small genome, P1 still displays a very complex transcription model, with eight viral RNAs identified in P1-transfected cells in this study.
Most recent approaches are based on very complex models designed to achieve an extremely effective classification; however these approaches become unfeasible for real-time applications.
Excoffier et al. [ 25] developed a simulation-based framework, fastsimcoal2, which can accurately infer demographic parameters for even very complex models under known ascertainment schemes (such as markers heterozygous in a single individual).
