The phrase "assumed to be uncertain" is correct and usable in written English.
It can be used in contexts where something is taken for granted or accepted as lacking certainty or clarity.
Example: "The results of the experiment were assumed to be uncertain, leading to further investigation."
Alternatives: "considered ambiguous" or "deemed unclear".
The geometric configuration is assumed to be uncertain.
The time delay is assumed to be uncertain time-invariant but has a known constant bound.
Further the parameters a and b are assumed to be uncertain.
The aggregated load is assumed to be uncertain, unbalanced and/or nonlinear, thus it is considered as a source of unmodeled dynamics.
In particular, demands are assumed to be uncertain at the time when the districts are made, and these are revealed only after the districting decisions are determined.
In the proposed scheme, the robot dynamic parameters, camera intrinsic and extrinsic parameters and position parameters of feature points are assumed to be uncertain.
Demands for the products are estimated by experts and assumed to be independent uncertain variables.
In the receiver system, the response system is assumed to be the partly uncertain system (11) where the available outputs variables are (y_{1}) and (z_{1}).
In the proposed problem, demands and costs are uncertain and assumed to be fuzzy variables with known possibility distributions.
This paper presents a new class of two-stage fuzzy material procurement planning (MPP) models with minimum-risk criteria, in which the material demand, the spot market material unit price and the spot market material supply quantity are uncertain and assumed to be fuzzy variables with known possibility distributions.
The underlying systems are more general, where the deficient transition descriptions are assumed to be completely known, polytopic uncertain, partly unknown, and completely unknown transition rates.
