Abstract: Device, system, and method of determining a solution scheme of a poly-algorithm solver. Some embodiments include a method of determining a solution scheme to be applied to input data by a poly-algorithm solver including a plurality of algorithms, the method including receiving a calling sequence including input values of a predefined set of parameters corresponding to the input data; based on the input values, choosing one of first and second algorithm selection models for selecting one or more of the algorithms to be applied to the input data by the solver. Other embodiments are described and claimed.