Sentence examples for a very challenging problem from inspiring English sources

"It's a very challenging problem from a data-analysis standpoint.

Contrast Enhancement Evaluation (CEE) is a very challenging problem.

Additionally unsupervised impact evaluation is a very challenging problem.

Synchronizing time across mobile devices is a very challenging problem for app makers.

This is a very challenging problem and often inexact Newton solvers present severe difficulties to converge.

The high uncertainty and nonlinearity of the entry dynamics make the estimation a very challenging problem.

In this age of big data, analyzing big data is a very challenging problem.

Multi-domain traffic engineering is a very challenging problem area and crankback signaling offers a very promising solutions framework herein.

Due to the uncertainties that occur during this process, designing and balancing a disassembly line is a very challenging problem.

Expecting them to vigilantly monitor a system that operates as well as this does is a really a very challenging problem".

For dispersive and time-varying HF channels, where the propagating wave also suffers from the multipath phenomena, estimation of DOA is a very challenging problem.