Sentence examples for difficult to estimate in from inspiring English sources

However, the available techniques are sensitive to estimation error of the AIR, which is difficult to estimate in realistic environments.

However, surface roughness is difficult to estimate in unstructured environments.

The parameter uncertainties include the destination decomposition fractions, that are difficult to estimate in reality.

These incentives have long been understood, but the validity of government data has been difficult to estimate in the absence of viable external estimates.

A main difficulty is that they generally include time differentiated versions of known signals which are difficult to estimate in a noisy environment.

However, after going through the usage of the ALLGARCH model, we find that it is not very suitable because the coefficients of the model, which are numerous, would be difficult to estimate in a real-time operating environment.

It is difficult to estimate changes in diversity in the northern most extent of Kazakhstan, as no cultures were available for typing [10].

It is difficult to estimate trends in physical inactivity in sub-Saharan Africa due to the dearth of data.

The cost of building the proposed infrastructure in Antarctica is very difficult to estimate, but in today's world is likely to be huge.

Just the failure rates resulting from natural manufacturing tolerances and such produce millions of failed drives per year (remember that many drives stay in service for years, making the total number of active HDDs in the world somewhat difficult to estimate), and in addition to that, there are huge amounts of catastrophic-type failures like dropped drives, water damage, and crush damage.

However, the requirement for comprehensive ground-observed hydrological and water quality data in previous methods makes it difficult to estimate WEC in areas with limited ground observations.