The phrase "as a filter of" is correct and usable in written English.
It can be used when describing something that acts as a means of selection or separation in a process or system.
Example: "The new software functions as a filter of irrelevant data, ensuring only the most pertinent information is presented to the user."
Alternatives: "as a means of filtering" or "as a means of selection".
With the introduction of new features like curated user lists, Twitter seems to be settling into a role as a filter of public life right now.
In some sense, the inherent numerical dissipation caused by the interface Riemann solver acts as a filter of high frequency solution components.
The inputs to the network were the first six components of the principal component analysis decomposition (here, acting as a filter) of the data set within the training region.
In addition to serve as a "filter" of genetic noise, the NMD machinery has also been described as an important regulator of mRNA output.
The ring-like moving junction appears to serve two functions: first, as a scaffold for the parasite to grip the host cell for entry and second, as a filter of host transmembrane proteins from the nascent vacuole, thereby enabling entry and avoidance of subsequent fusion with host lysosomes.
Besides, the pathway information is used as a filter of the 'Search' function.
He watches himself seeing all manner of things, as it were, with the "watches" acting as a filter on the immediacy of the "seeing".
This anthropogenic matrix occupies, in several places, the majority of the landscape and acts as a filter for dispersal of animals between forest patches [6], [7].
The crew members devise projects, such as recycling dishwater through a filter of volcanic soil.
Wikipedia functions as a filter for vast amounts of information online, and it could be said that Google owes the site for tidying up the neighborhood.
The core of BioTextRetriever is the automatic construction of a classifier, acting as a filter, capable of selecting the relevant papers among the whole MEDLINE bibliographic database.
