Sentence examples for problems are challenging from inspiring English sources

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

As shown by the experimental results, the proposed problems are challenging to these four recent algorithms.

While these problems are challenging, some mitigative measures presently exist and are discussed in the paper.

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

The control problems are challenging and involve nonlinearities including discontinuities, high dimensionality, uncertainties, non-Gaussian noise, and more.

Accurate simulations of such problems are challenging because of the contradictory requirements of numerical methods used to simulate turbulence, which must minimize any numerical dissipation that would otherwise overwhelm the small scales, and shock-capturing schemes, which introduce numerical dissipation to stabilize the solution.

Working in very basic and difficult terrain, coupled with equipment and technology problems, was challenging.

Formulating such problems is challenging too because, by definition, we generally first view "quality" as being more subjective than "quantity".

Identifying best practices to address complex public health problems is challenging.

The performance of the proposed hybrid algorithm for solving both single and multi-objective optimization problems is challenged by using of some well-known benchmark problems.

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