"are simply based on" is correct and usable in written English.
You can use it to indicate that something is founded on a certain set of ideas or principles. For example, "Our project proposals are simply based on our team's collective knowledge and experience."
Most of the questionnaire-based surveys conducted in large populations are simply based on ICHD criteria – which only requires 5 attacks of migraine for the diagnosis- and therefore include also subjects suffering from migraine with a low recurrence.
None of these measures would appear to be new, but are simply based on the interpretation of current rules.
"The patterns are simply based on the user's creativity," said Mr. Hickman, who said he had sold nearly 100 copies of the software, at $79. (He is keeping his day job as a network engineer).
Although the outcome ultimately is that the sale and distribution of Tintin in the Congo cannot be prohibited, the Court is nonetheless insufficiently critical of the premise of the applicants' arguments, which are simply based on a mistaken idea of what (legally) constitutes harassment.
If these programs are simply based on quantity discounts or paying for patronage, they will not endure".
Therefore, the steganalytic algorithms that are simply based on the COM of HCF (HCF-COM) are prevented.
First one is simply based on the Fresnel equations for multilayered structures.
Besides, the way of generating multi-scale image features is simply based on resizing the input image by interpolation-based methods such as bilinear interpolation or bicubic interpolation; this is somewhat monotonous in terms of diversity of feature.
"At another, it's simply based on economic opportunity.
In reality it is simply based on the national median income.
It was simply based on man, arms outstretched downwards, in deep despair.
