Sentence examples for models are hard from inspiring English sources
Older models are hard to find.
But genuinely new business models are hard to come by.
Such business models are hard to adopt but can unlock future growth for companies.
However, these models are hard to describe distribution of high-dimensional features.
Business models are hard to figure out during platform shifts, but can play out to great success (as in the case of mobile over the last decade).
Current techno-economic evaluation models are hard to apply to cost allocation in a multi-service deployment with multiple actors and resource sharing.
Black-box econometric models are harder to blend with human judgment.
Our numerical results indicate that the ring models are harder to solve with CPLEX than the tree and star ones.
Business models are harder to find for the poorest: Viable business models become harder and harder to find as you seek to serve those furthest down the income distribution.
The pace of technological and business innovation seems to have accelerated in recent decades, with the result that sustainably profitable business models are harder than ever to craft.
However, building accurate prediction models is hard due to the lack of data in the domain of software engineering.
