The phrase "are needed to filter" is correct and usable in written English.
It can be used when discussing requirements or necessities for a filtering process in various contexts, such as data processing or environmental science.
Example: "Certain parameters are needed to filter the data accurately and ensure reliable results."
Alternatives: "are required to filter" or "are essential for filtering".
Artificial checks are needed to filter the entries in the result set one by one.
Efforts are needed to filter out non-EQ-related forcing from above and below the ionosphere to identify the precursor signal, which is difficult because the ionosphere changes even under quiet conditions.
Due to the presence of noise, several different compound combinations are needed to filter out cell-lines, which show significant enrichment of synergy strength over different combinations.
Thus, statistical algorithms are needed to filter large volumes of data, focus attention on potential public health problems, and provide an objective measure of increases in disease activity.
Even with the identification of many associated SNPs, it is likely that experiments are needed to filter for the genotypes that directly contribute to the gene expression phenotype.
To enhance the visibility of bridge frequencies, an effective filter is needed to filter out the vehicle frequency.
A diverse set of organisms may be needed to filter out the range of pollutants in places like New York Harbor.
A more diverse set of organisms, they maintain, will be needed to filter out the range of pollutants found in places like New York Harbor.
The proviso is needed to filter cases where probability relations between C-type events and E-type events do not track causal relations.
In order to construct a compatible word set, a threshold value is needed to filter out 'non-compatibles' and only compatible words for each PFM are kept.
This step is needed to filter out miRNA-target pairs with high MI due to positive correlation.
