"much more sparse" is correct and usable in written English.
You can use it as an adjective to describe a situation, place, or object that has a lesser density or abundance that something else. For example: "The trees in the desert are much more sparse than in the rainforest."
His interactions with contemporaries were much more sparse, and those chiefly through correspondence.
Furthermore, Experiment 1b confirms that the search path followed in Experiment 1a was not a result of the relatively densely packed targets but holds over much more sparse target densities.
Take graphs A for example, it is much more sparse than graph C. As shown in Fig. 6g, over the same query workload, the best evaluation strategy for graph A is path sharing, while for graph C it is a combination of path sharing and probe-based communication.
The evidence, though, is always well assembled, even though, by volume three, it becomes much more sparse.
If you have a really intense build up to a chorus, then after that, you need something that is much more sparse, a lot of room to get to the next place where there's a lot of stuff that's happening.
Elsewhere in the Caribbean, records are much more sparse and scattered.
It's now much more rugged, the sparse vegetation and dwarf trees few and far between.
L1-regularization was partly successful on the sparse IRMA network, and much more successful on the sparse GeneNetWeaver networks.
Although the Node + Path is much more efficient in storing sparse data, it also includes too many redundancies to store the path of each archetype data item.
Another conclusion of this research was that introducing patchy or modular connectivity, with occasional long-range connections that have many end-point connections to a patch or module, was much more efficient than random (but sparse) connectivity, especially for large brains.
While they're probably equally as sparse, we spent much more time on the sound, the performances and the songs, so they were in the studio far longer than before.
