The phrase "extend a model" is correct and usable in written English.
You can use this phrase when you want to explain the process of expanding or developing an existing or established model. For example, "Our research team is working to extend the existing model of social media use among teenagers."
Motzek et al. [11] extend a model by Jakobson [20] and model mission dependencies as a graph of mission nodes (MN) as shown in Fig. 1.
For the purpose of our study we extend a model previously used by Blaufus and Hundsdoerfer (2008) and Blaufus and Mantei (2014) to incorporate leverage-based as well as EBITDA-based IDR.
First, we extend a model proposed in the literature for the detection of invasive species to suit our purpose, and we discuss the main sources of model uncertainty, many of which are hard to quantify.
This restriction was imposed to avoid erroneous interpretations that arise by failure to extend a model beyond its predicted termini.
However, there are few computational methods available to extend a model by systematically identifying missing terms in a differential equation, or by improving the existing terms.
This region may serve as a site for protein protein interactions, and in this regard, our results parallel and extend a model for signaling from PrPC protein complexes.
Extending a model by Bressloff and Newby, we describe the evolution of the activity in a discrete network of finite populations by a Markov chain.
In order to describe deviations from the mean-field behavior for finite population sizes, we set up a Markov chain to describe the evolution of the activity in the finite network, extending a model by Bressloff and Newby [10].
We reconstructed human and chimp ancestral sequences extending a model developed by Arndt and Hwa (2005).
A phylogenetic generalized hidden Markov model (PGHMM) extends a model described in the single isoform gene finder Shadower [ 27].
Extending a model allows students to apply the knowledge they have learned to a new but related problem.
