"merely based on" is correct and usable in written English.
You can use the phrase to emphasize that something is based on very little or no evidence. For example: "His decision to take a different route home was merely based on a hunch."
Our results indicate a strikingly higher sensitivity of the extended Taxy-Pro mixture model when compared with homology-based classification methods merely based on genomic reference data.
But Snowden's claim isn't merely based on the quantity of news he has generated; his contribution is much larger than that.
Besides, implementing the mentioned methods merely based on their publications results in an unfair comparison.
However, these evaluations merely based on observations are seen to be inadequate.
As yet, the majority of phytotherapeutics in use in the European community is approved merely based on such empirical knowledge.
We restrict our attention to stationary policies that take decisions merely based on the current system state information.
The structural evidence is merely based on the comparison of the obtained UV spectra with that of a BB standard.
The reduction in termination rate due to segregation cannot be predicted merely based on the average number of propagating radicals per particle (¯np).
In order to do so, a utility function is to be defined, which is not be merely based on network characteristics.
Thus, the direct identification of the target compounds merely based on the chromatographic parameters is still a challenge in many cases.
However this calculation is merely based on assumption of K value which may vary over the course of batch and depends on the spectrum of light being used.
