Essentially, I was trying to create a system with two difficulty vectors, like Scrabble.
This gave me the two difficulty vectors I was looking for.
The primary difficulty of support vector machine (SVM) model selection is heavy computational cost, thus it is difficult for current model selection methods to be applied in face recognition.
Difficulties of the vector potential formulation include the implementation of boundary conditions for through-flow boundaries and the numerical treatment of fourth-order partial differential equations.
Although technical difficulties such as vector and parasite drug resistance have played a part, failure in this endeavour was probably due to social and political factors that prevented efficient application of control measures [ 4].
To tackle this difficulty, an augmented state vector is defined which includes both the time delay and the target state with a stochastic time stamp.
8 Significantly, the Aedes mosquitos are predominantly active during daylight hours, which poses difficulties in controlling the vector.
Control of leishmaniasis relies mostly on chemotherapy [ 3], given the lack of an effective vaccine and the difficulties to control the vector (sandfly).
This model accounts for thresholds between categories and can be generalized to multidimensional analogues, interpreting person abilities and item difficulties as multidimensional vectors.
Under normal conditions, plasmid DNA and its non‐viral vector complexes have difficulty in passing through various anatomical and biological barriers.
