Sentence examples for the problem is challenging from inspiring English sources

The problem is challenging in part due to the scarceness of manually-classified paintings.

The problem is: challenging the Hungarian government in print or on air can land a journalist in court.

Along with uncertainties in the model, the problem is challenging due to constraints on experimental conditions.

The problem is challenging, since the process model is highly nonlinear, and subject to uncertainty.

However, the problem is challenging due to the large amount of shortest path distance computations across tracks.

The problem is challenging as the potential number of groups can be much larger than the memory capacity.

The problems are challenging and become more difficult as the game advances.

The problems are challenging mainly because of the lack of a general mathematical model to describe human skills.

The considered problem is challenging due to the existence of unknown distributed time-varying delays and asymmetric saturation actuator.

The control problem is challenging, especially at low power levels due to shrink and swell phenomena and flow measurement errors.

The mixed boundary-value problem is challenging since the a priori unknown deformed indented surface of the layer contacting the rigid cylinder is to be determined as a part of the solution of the problem.